David Walt

All Stories

1. 
   Single-Molecule Array (Simoa) Technology as a Highly Sensitive Screening Tool for Protein–Protein Interactions

   Article • ACS Sensors, October 2025, American Chemical Society (ACS)

   David Walt

2. 
   Digital seed amplification assay for TDP-43 aggregate quantification in CSF

   Article • October 2025, Cold Spring Harbor Laboratory Press

   David Walt

3. 
   Anfinsen Redux: Ribonuclease Folding in the Single-Molecule Regime

   Article • Journal of the American Chemical Society, October 2025, American Chemical Society (ACS)

   David Walt

4. 
   Quantification of fibrinaloid clots in plasma from pediatric Long COVID patients using a microfluidic assay

   Article • October 2025, Springer Science + Business Media

   David Walt

5. 
   Single-Cell and Plasma Proteomics Do Not Differentiate Patients With and Without SARS-CoV-2 Antigenemia in Convalescence in a Cohort of 100 Patients

   Article • Open Forum Infectious Diseases, August 2025, Oxford University Press (OUP)

   David Walt

6. 
   Viral spike antigen clearance and augmented recovery in children with post-COVID multisystem inflammatory syndrome treated with larazotide

   Article • Science Translational Medicine, July 2025, American Association for the Advancement of Science

   David Walt

7. 
   A single-molecule array urine test for tuberculosis: A case-control diagnostic accuracy study

   Article • June 2025, Cold Spring Harbor Laboratory Press

   David Walt

8. 
   Measurement of α-synuclein as protein cargo in plasma extracellular vesicles

   Article • Proceedings of the National Academy of Sciences, October 2024, Proceedings of the National Academy of Sciences

   David Walt

9. 
   A Multiplexed Digital Platform Enables Detection of Attomolar Protein Levels with Minimal Cross-Reactivity

   Article • ACS Nano, October 2024, American Chemical Society (ACS)

   David Walt

10. 
    Heterotypic immunity from prior SARS-CoV-2 infection but not COVID-19 vaccination associates with lower endemic coronavirus incidence

    Article • Science Translational Medicine, June 2024, American Association for the Advancement of Science

    David Walt

11. 
    Measuring alpha-synuclein aggregates for Parkinson's Disease Diagnostics

    Article • Proceedings of the National Academy of Sciences, January 2024, Proceedings of the National Academy of Sciences

    David Walt

12. 
    Efficient discovery of antibody binding pairs using a photobleaching strategy for bead encoding

    Article • Lab on a Chip, January 2024, Royal Society of Chemistry

    David Walt

13. 
    Assessment of extracellular vesicle protein cargo as neurodegenerative disease biomarkers

    Article • November 2023, Cold Spring Harbor Laboratory Press

    David Walt

14. 
    Heterotypic responses against nsp12/nsp13 from prior SARS-CoV-2 infection associates with lower subsequent endemic coronavirus incidence

    Article • October 2023, Cold Spring Harbor Laboratory Press

    David Walt

15. 
    Response by Yonker et al to Letter Regarding Article, “Circulating Spike Protein Detected in Post–COVID-19 mRNA Vaccine Myocarditis”

    Article • Circulation, September 2023, Wolters Kluwer Health

    David Walt

16. 
    Ultrasensitive Detection of Circulating LINE-1 ORF1p as a Specific Multicancer Biomarker

    Article • Cancer Discovery, September 2023, American Association for Cancer Research (AACR)

    David Walt

17. 
    Ultrasensitive Protein Detection Technologies for Extracellular Vesicle Measurements

    Article • Molecular & Cellular Proteomics, June 2023, Elsevier

    David Walt

18. 
    Improved isolation of extracellular vesicles by removal of both free proteins and lipoproteins

    Article • eLife, May 2023, eLife

    David Walt

19. 
    Impact of Donor and Recipient SARS-CoV-2 Vaccination or Infection on Immunity after Hematopoietic Cell Transplantation

    Article • Transplantation and Cellular Therapy, May 2023, Elsevier

    David Walt

20. 
    Circulating Spike Protein Detected in Post–COVID-19 mRNA Vaccine Myocarditis

    Article • Circulation, March 2023, Wolters Kluwer Health

    David Walt

21. 
    Nanopore-Based Fingerprint Immunoassay Based on Rolling Circle Amplification and DNA Fragmentation

    Article • ACS Nano, March 2023, American Chemical Society (ACS)

    David Walt

22. 
    Disulfide Bonds Are Not Necessary for Intrinsic TNSALP Activity

    Article • The Journal of Physical Chemistry B, February 2023, American Chemical Society (ACS)

    David Walt

23. 
    Ultrasensitive detection of circulating LINE-1 ORF1p as a specific multi-cancer biomarker

    Article • January 2023, Cold Spring Harbor Laboratory Press

    David Walt

24. 
    Improved Isolation of Extracellular Vesicles by Removal of Both Free Proteins and Lipoproteins

    Article • January 2023, Cold Spring Harbor Laboratory Press

    David Walt

25. 
    EP074/#619 Single molecule array (SIMOA) for the detection of cervical dysplasia and cancer

    Article • December 2022, BMJ

    David Walt

26. 
    Reply to Alaedini and Wormser

    Article • Clinical Infectious Diseases, November 2022, Oxford University Press (OUP)

    David Walt

27. 
    An Assessment of a Rapid SARS-CoV-2 Antigen Test in Bangladesh

    Article • American Journal of Tropical Medicine and Hygiene, October 2022, American Society of Tropical Medicine and Hygiene

    David Walt

28. 
    Persistent Circulating Severe Acute Respiratory Syndrome Coronavirus 2 Spike Is Associated With Post-acute Coronavirus Disease 2019 Sequelae

    Article • Clinical Infectious Diseases, September 2022, Oxford University Press (OUP)

    David Walt

29. 
    A lab-on-a-chip for the concurrent electrochemical detection of SARS-CoV-2 RNA and anti-SARS-CoV-2 antibodies in saliva and plasma

    Article • Nature Biomedical Engineering, August 2022, Springer Science + Business Media

    David Walt

30. 
    Immunogenicity of a Three-Dose Primary Series of mRNA COVID-19 Vaccines in Patients With Lymphoid Malignancies

    Article • Open Forum Infectious Diseases, August 2022, Oxford University Press (OUP)

    David Walt

31. 
    Isolating high-purity extracellular vesicles from human biofluids for proteome analysis

    Article • Molecular & Cellular Proteomics, August 2022, Elsevier

    David Walt

32. 
    New Views of Old Proteins: Clarifying the Enigmatic Proteome

    Article • Molecular & Cellular Proteomics, July 2022, Elsevier

    David Walt, Dr Alexandra Naba

33. 
    Systematic Approach to Address Early Pandemic's Diagnostic Unmet Needs

    Article • Frontiers in Microbiology, June 2022, Frontiers

    David Walt

34. 
    Persistent circulating SARS-CoV-2 spike is associated with post-acute COVID-19 sequelae

    Article • June 2022, Cold Spring Harbor Laboratory Press

    David Walt

35. 
    Single-molecule studies reveal method for tuning the heterogeneous activity of alkaline phosphatase

    Article • Biophysical Journal, June 2022, Elsevier

    David Walt

36. 
    Harmonization of Multiple SARS-CoV-2 Reference Materials Using the WHO IS (NIBSC 20/136): Results and Implications

    Article • Frontiers in Microbiology, May 2022, Frontiers

    David Walt

37. 
    A human ectopic-lymphoid-follicle-on-a-chip for testing vaccines and adjuvants

    Article • The Journal of Immunology, May 2022, The American Association of Immunologists

    David Walt

38. 
    Reverse Transcriptase Inhibition Disrupts Repeat Element Life Cycle in Colorectal Cancer

    Article • Cancer Discovery, March 2022, American Association for Cancer Research (AACR)

    David Walt

39. 
    Ectopic Lymphoid Follicle Formation and Human Seasonal Influenza Vaccination Responses Recapitulated in an Organ‐on‐a‐Chip

    Article • Advanced Science, March 2022, Wiley

    David Walt

40. 
    Severe Acute Respiratory Syndrome Coronavirus 2 Antigens as Targets of Antibody Responses

    Article • Clinics in Laboratory Medicine, March 2022, Elsevier

    David Walt

41. 
    Performance of three rapid antigen tests against the SARS-CoV-2 Omicron variant

    Article • February 2022, Cold Spring Harbor Laboratory Press

    David Walt

42. 
    High-Throughput, High-Multiplex Digital Protein Detection with Attomolar Sensitivity

    Article • ACS Nano, January 2022, American Chemical Society (ACS)

    David Walt

43. 
    Analytic sensitivity of the Abbott BinaxNOW™ lateral flow immunochromatographic assay for the SARS-CoV-2 Omicron variant

    Article • January 2022, Cold Spring Harbor Laboratory Press

    David Walt

44. 
    Donor Clonal Hematopoiesis and Recipient Outcomes After Transplantation

    Article • Journal of Clinical Oncology, January 2022, American Society of Clinical Oncology (ASCO)

    David Walt

45. 
    Framework for rapid comparison of extracellular vesicle isolation methods

    Article • eLife, November 2021, eLife

    David Walt

46. 
    A SARS‐CoV‐2 Neutralization Assay Using Single Molecule Arrays

    Article • Angewandte Chemie, November 2021, Wiley

    David Walt

47. 
    Severe Acute Respiratory Syndrome Coronavirus 2 Messenger RNA Vaccines in Allogeneic Hematopoietic Stem Cell Transplant Recipients: Immunogenicity and Reactogenicity

    Article • Clinical Infectious Diseases, November 2021, Oxford University Press (OUP)

    David Walt

48. 
    Evaluation of phytoconstituent and wound-healing potential of methanolic waste shell extract of Elaeis guineensis Jacquin in female rats

    Article • Phytomedicine Plus, November 2021, Elsevier

    Stephen Sunday Emmanuel, David Walt

49. 
    Author response: Framework for rapid comparison of extracellular vesicle isolation methods

    Article • October 2021, eLife

    David Walt

50. 
    An assessment of a rapid SARS-CoV-2 antigen test in Bangladesh

    Article • October 2021, Cold Spring Harbor Laboratory Press

    David Walt

51. 
    A Modular Biomaterial Scaffold‐Based Vaccine Elicits Durable Adaptive Immunity to Subunit SARS‐CoV‐2 Antigens

    Article • Advanced Healthcare Materials, October 2021, Wiley

    David Walt

52. 
    The optimization of an ultra-sensitive single molecule assay for the multiplexed detection of SARS-CoV-2 antigens

    Article • American Journal of Clinical Pathology, October 2021, Oxford University Press (OUP)

    David Walt

53. 
    Donor clonal hematopoiesis and recipient outcomes after transplantation

    Article • September 2021, Cold Spring Harbor Laboratory Press

    David Walt

54. 
    Single‐Molecule Enzymology for Diagnostics: Profiling Alkaline Phosphatase Activity in Clinical Samples

    Article • ChemBioChem, September 2021, Wiley

    David Walt

55. 
    Lab-on-a-chip multiplexed electrochemical sensor enables simultaneous detection of SARS-CoV-2 RNA and host antibodies

    Article • September 2021, Cold Spring Harbor Laboratory Press

    David Walt

56. 
    Protective heterologous T cell immunity in COVID-19 induced by the trivalent MMR and Tdap vaccine antigens

    Article • Med, September 2021, Elsevier

    David Walt

57. 
    Activity of mRNA COVID-19 vaccines in patients with lymphoid malignancies

    Article • Blood Advances, August 2021, American Society of Hematology

    David Walt

58. 
    Multisystem inflammatory syndrome in children is driven by zonulin-dependent loss of gut mucosal barrier

    Article • Journal of Clinical Investigation, July 2021, American Society for Clinical Investigation

    David Walt

59. 
    Correction to: Evaluation of serological lateral flow assays for severe acute respiratory syndrome coronavirus-2

    Article • BMC Infectious Diseases, July 2021, Springer Science + Business Media

    David Walt

60. 
    Evaluation of Three Commercial and Two Non-Commercial Immunoassays for the Detection of Prior Infection to SARS-CoV-2

    Article • The Journal of Applied Laboratory Medicine, July 2021, Oxford University Press (OUP)

    David Walt

61. 
    The American lobster genome reveals insights on longevity, neural, and immune adaptations

    Article • Science Advances, June 2021, American Association for the Advancement of Science

    David Walt

62. 
    Evaluation of serological lateral flow assays for severe acute respiratory syndrome coronavirus-2

    Article • BMC Infectious Diseases, June 2021, Springer Science + Business Media

    David Walt

63. 
    ASSESSMENT OF PERFORMANCE AND IMPLEMENTATION CHARACTERISTICS OF RAPID POINT OF CARE SARS-CoV-2 ANTIGEN TESTING

    Article • June 2021, Cold Spring Harbor Laboratory Press

    David Walt

64. 
    L1CAM is not associated with extracellular vesicles in human cerebrospinal fluid or plasma

    Article • Nature Chemical Biology, June 2021, Springer Science + Business Media

    David Walt

65. 
    Circulating Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) Vaccine Antigen Detected in the Plasma of mRNA-1273 Vaccine Recipients

    Article • Clinical Infectious Diseases, May 2021, Oxford University Press (OUP)

    David Walt

66. 
    Protective heterologous T cell immunity in COVID-19 induced by MMR and Tdap vaccine antigens

    Article • May 2021, Cold Spring Harbor Laboratory Press

    David Walt

67. 
    Ultrasensitive Measurement of Both SARS-CoV-2 RNA and Antibodies from Saliva

    Article • Analytical Chemistry, March 2021, American Chemical Society (ACS)

    David Walt

68. 
    Single-Molecule Dwell-Time Analysis of Restriction Endonuclease-Mediated DNA Cleavage

    Article • Journal of Visualized Experiments, February 2021, MyJove Corporation

    David Walt

69. 
    Ultrasensitive measurement of both SARS-CoV2 RNA and serology from saliva

    Article • January 2021, Cold Spring Harbor Laboratory Press

    David Walt

70. 
    High-Sensitivity Single Molecule Array Assays for Pathological Isoforms in Parkinson’s Disease

    Article • Clinical Chemistry, January 2021, Oxford University Press (OUP)

    David Walt

71. 
    Evaluation of serological lateral flow assays for severe acute respiratory syndrome coronavirus-2

    Article • January 2021, Cold Spring Harbor Laboratory Press

    David Walt

72. 
    Protective Heterologous T Cell Immunity in COVID-19 Induced by MMR and Tdap Vaccine Antigens

    Article • SSRN Electronic Journal, January 2021, Elsevier

    David Walt

73. 
    Ultra-Sensitive Serial Profiling of SARS-CoV-2 Antigens and Antibodies in Plasma to Understand Disease Progression in COVID-19 Patients with Severe Disease

    Article • Clinical Chemistry, November 2020, Oxford University Press (OUP)

    David Walt

74. 
    Systems Biology Methods Applied to Blood and Tissue for a Comprehensive Analysis of Immune Response to Hepatitis B Vaccine in Adults

    Article • Frontiers in Immunology, November 2020, Frontiers

    David Walt

75. 
    Framework for Rapid Comparison of Extracellular Vesicle Isolation Methods

    Article • October 2020, Cold Spring Harbor Laboratory Press

    David Walt

76. 
    Plasma IL-6 changes correlate to PD-1 inhibitor responses in NSCLC

    Article • Journal for ImmunoTherapy of Cancer, October 2020, BMJ

    David Walt

77. 
    Simplified Digital Enzyme-Linked Immunosorbent Assay Using Tyramide Signal Amplification and Fibrin Hydrogels

    Article • ACS Sensors, September 2020, American Chemical Society (ACS)

    David Walt

78. 
    Ultrasensitive high-resolution profiling of early seroconversion in patients with COVID-19

    Article • Nature Biomedical Engineering, September 2020, Springer Science + Business Media

    David Walt

79. 
    Sequential Protein Capture in Multiplex Single Molecule Arrays: A Strategy for Eliminating Assay Cross‐Reactivity

    Article • Advanced Healthcare Materials, September 2020, Wiley

    David Walt

80. 
    Ultrasensitive Detection of Enzymatic Activity Using Single Molecule Arrays

    Article • Journal of the American Chemical Society, August 2020, American Chemical Society (ACS)

    David Walt

81. 
    Single‐Molecule Analysis Determines Isozymes of Human Alkaline Phosphatase in Serum

    Article • Angewandte Chemie, August 2020, Wiley

    David Walt

82. 
    Single‐Molecule Analysis Determines Isozymes of Human Alkaline Phosphatase in Serum

    Article • Angewandte Chemie, August 2020, Wiley

    David Walt

83. 
    L1CAM is not Associated with Extracellular Vesicles in Human Cerebrospinal Fluid or Plasma

    Article • August 2020, Cold Spring Harbor Laboratory Press

    David Walt

84. 
    Serial Profiling of SARS-CoV-2 Antigens and Antibodies in COVID-19 Patient Plasma

    Article • July 2020, Cold Spring Harbor Laboratory Press

    David Walt

85. 
    Ultrasensitive Detection of Attomolar Protein Concentrations by Dropcast Single Molecule Assays

    Article • Journal of the American Chemical Society, June 2020, American Chemical Society (ACS)

    David Walt

86. 
    Diagnostic technology for COVID-19: comparative evaluation of antigen and serology-based SARS-CoV-2 immunoassays, and contact tracing solutions for potential use as at-home products

    Article • June 2020, Cold Spring Harbor Laboratory Press

    David Walt

87. 
    Single Molecule Protein Detection with Attomolar Sensitivity Using Droplet Digital Enzyme-Linked Immunosorbent Assay

    Article • ACS Nano, June 2020, American Chemical Society (ACS)

    David Walt

88. 
    Evaluation of two commercial and two non-commercial immunoassays for the detection of prior infection to SARS-CoV-2

    Article • June 2020, Cold Spring Harbor Laboratory Press

    David Walt

89. 
    Ultra-Sensitive High-Resolution Profiling of Anti-SARS-CoV-2 Antibodies for Detecting Early Seroconversion in COVID-19 Patients

    Article • May 2020, Cold Spring Harbor Laboratory Press

    David Walt

90. 
    Hypothermic Ex Situ Perfusion of Human Limbs With Acellular Solution for 24 Hours

    Article • Transplantation, March 2020, Wolters Kluwer Health

    David Walt

91. 
    Can mHealth Technology Help Mitigate the Effects of the COVID-19 Pandemic?

    Article • IEEE Open Journal of Engineering in Medicine and Biology, January 2020, Institute of Electrical & Electronics Engineers (IEEE)

    David Walt

92. 
    Simultaneous detection of small molecules, proteins and microRNAs using single molecule arrays

    Article • Chemical Science, January 2020, Royal Society of Chemistry

    David Walt

93. 
    Single-molecule measurements in microwells for clinical applications

    Article • Critical Reviews in Clinical Laboratory Sciences, December 2019, Taylor & Francis

    David Walt

94. 
    Accumulation mechanism of indigo and indirubin in Polygonum tinctorium revealed by metabolite and transcriptome analysis

    Article • Industrial Crops and Products, December 2019, Elsevier

    David Walt

95. 
    A rapid triage test for active pulmonary tuberculosis in adult patients with persistent cough

    Article • Science Translational Medicine, October 2019, American Association for the Advancement of Science

    Dr Saurabh Mehta, David Walt

96. 
    Lymphoid follicle formation and human vaccination responses recapitulated in an organ-on-a-chip

    Article • October 2019, Cold Spring Harbor Laboratory Press

    David Walt

97. 
    Single-Molecule Mechanistic Study of Enzyme Hysteresis

    Article • ACS Central Science, September 2019, American Chemical Society (ACS)

    David Walt

98. 
    Single-Molecule Arrays for Ultrasensitive Detection of Blood-Based Biomarkers for Immunotherapy

    Article • September 2019, Springer Science + Business Media

    David Walt

99. 
    Clinical testing should be individualized, not based on populations

    Article • Journal of Clinical Investigation, August 2019, American Society for Clinical Investigation

    David Walt

100. 
     Impact of clinical sample handling and processing on ultra-low level measurements of plasma cytokines

     Article • Clinical Biochemistry, March 2019, Elsevier

     David Walt

101. 
     Detection of amyloid β oligomers toward early diagnosis of Alzheimer's disease

     Article • Analytical Biochemistry, February 2019, Elsevier

     David Walt

102. 
     Protein Detection by Counting Molecules

     Article • Clinical Chemistry, January 2019, AACC

     David Walt

103. 
     Competitive Immunoassays for the Detection of Small Molecules Using Single Molecule Arrays

     Article • Journal of the American Chemical Society, November 2018, American Chemical Society (ACS)

     David Walt

104. 
     Evaluation of Antibody Biotinylation Approaches for Enhanced Sensitivity of Single Molecule Array (Simoa) Immunoassays

     Article • Bioconjugate Chemistry, October 2018, American Chemical Society (ACS)

     David Walt

105. 
     Highly Sensitive and Multiplexed Protein Measurements

     Article • Chemical Reviews, August 2018, American Chemical Society (ACS)

     David Walt

106. 
     Finding useful biomarkers for Parkinson’s disease

     Article • Science Translational Medicine, August 2018, American Association for the Advancement of Science

     David Walt

107. 
     Bottom-up single-molecule strategy for understanding subunit function of tetrameric β-galactosidase

     Article • Proceedings of the National Academy of Sciences, July 2018, Proceedings of the National Academy of Sciences

     David Walt

108. 
     How many human proteoforms are there?

     Article • Nature Chemical Biology, February 2018, Springer Science + Business Media

     David Walt

109. 
     Ultrasensitive Single-Molecule Enzyme Detection and Analysis Using a Polymer Microarray

     Article • Analytical Chemistry, February 2018, American Chemical Society (ACS)

     David Walt

110. 
     48 Single Molecule Array Ultra-Sensitive Cytokine Assays in EDTA Plasma Are Robust and Clinically Feasible

     Article • American Journal of Clinical Pathology, January 2018, Oxford University Press (OUP)

     David Walt

111. 
     Single Molecule Arrays for ultra-sensitive detection of rat cytokines in serum

     Article • Journal of Immunological Methods, January 2018, Elsevier

     David Walt

112. 
     Development of a Rapid Salivary Proteomic Platform for Oral Feeding Readiness in the Preterm Newborn

     Article • Frontiers in Pediatrics, December 2017, Frontiers

     David Walt

113. 
     Long-Term Measurements of Human Inflammatory Cytokines Reveal Complex Baseline Variations between Individuals

     Article • American Journal Of Pathology, December 2017, Elsevier

     David Walt

114. 
     Digital direct detection of microRNAs using single molecule arrays

     Article • Nucleic Acids Research, June 2017, Oxford University Press (OUP)

     David Walt

115. 
     Single-Molecule Arrays for Protein and Nucleic Acid Analysis

     Article • Annual Review of Analytical Chemistry, June 2017, Annual Reviews

     David Walt

116. 
     Using Next-Generation Sequencing to Explore Genetics and Race in the High School Classroom

     Article • CBE—Life Sciences Education, June 2017, American Society for Cell Biology (ASCB)

     David Walt

117. 
     Parkinson’s Disease Biomarkers: Perspective from the NINDS Parkinson’s Disease Biomarkers Program

     Article • Biomarkers in Medicine, May 2017, Taylor & Francis

     David Walt

118. 
     Highly localized divergence within supergenes in Atlantic cod (Gadus morhua) within the Gulf of Maine

     Article • BMC Genomics, March 2017, Springer Science + Business Media

     David Walt

119. 
     Optically-based Molecularly Imprinted Polymers Sensors

     Article • January 2017, Optical Society of America (OSA)

     David Walt

120. 
     Personal microbiomes and next-generation sequencing for laboratory-based education

     Article • FEMS Microbiology Letters, November 2016, Oxford University Press (OUP)

     David Walt

121. 
     Using Antigen–antibody Binding Kinetic Parameters to Understand Single-Molecule Array Immunoassay Performance

     Article • Analytical Chemistry, November 2016, American Chemical Society (ACS)

     David Walt

122. 
     Rapid and ultrasensitive detection of botulinum neurotoxin serotype A1 in human serum and urine using single-molecule array method

     Article • Forensic Toxicology, September 2016, Springer Science + Business Media

     David Walt

123. 
     Incorporation of Slow Off-Rate Modified Aptamers Reagents in Single Molecule Array Assays for Cytokine Detection with Ultrahigh Sensitivity

     Article • Analytical Chemistry, August 2016, American Chemical Society (ACS)

     David Walt

124. 
     Protein Counting in Single Cancer Cells

     Article • Analytical Chemistry, February 2016, American Chemical Society (ACS)

     David Walt

125. 
     Training the next generation of biomedical investigators in glycosciences

     Article • Journal of Clinical Investigation, February 2016, American Society for Clinical Investigation

     David Walt

126. 
     Enzyme Kinetics in Femtoliter Arrays

     Article • January 2016, Elsevier

     David Walt

127. 
     Correlations of Salivary Biomarkers with Clinical Assessments in Patients with Cystic Fibrosis

     Article • PLOS One, August 2015, PLOS

     David Walt

128. 
     The Scope of Analytical Chemistry

     Article • Analytical Chemistry, June 2015, American Chemical Society (ACS)

     David Walt

129. 
     Ultrasensitive Detection of Ricin Toxin in Multiple Sample Matrixes Using Single-Domain Antibodies

     Article • Analytical Chemistry, June 2015, American Chemical Society (ACS)

     David Walt

130. 
     Ultra-sensitive protein detection via Single Molecule Arrays towards early stage cancer monitoring

     Article • Scientific Reports, June 2015, Springer Science + Business Media

     David Walt

131. 
     Salivary Diagnostics Using a Portable Point-of-Service Platform: A Review

     Article • Clinical Therapeutics, March 2015, Elsevier

     David Walt

132. 
     Single-Molecule Arrays for Ultrasensitive Detection of Host Immune Response to Dengue Virus Infection

     Article • Journal of Clinical Microbiology, February 2015, ASM Journals

     David Walt

133. 
     Stoichiometry of the α-Complementation Reaction of Escherichia coli β-Galactosidase As Revealed through Single-Molecule Studies

     Article • Biochemistry, February 2015, American Chemical Society (ACS)

     David Walt

134. 
     Catalytic kinetics of single gold nanoparticles observed via optical microwell arrays

     Article • Nanotechnology, January 2015, Institute of Physics Publishing

     David Walt

135. 
     Fiber-optic array using molecularly imprinted microspheres for antibiotic analysis

     Article • Chemical Science, January 2015, Royal Society of Chemistry

     Dr Elena Benito Peña, Professor Maria C Moreno-Bondi, David Walt

136. 
     Single molecule array (Simoa) assay with optimal antibody pairs for cytokine detection in human serum samples

     Article • The Analyst, January 2015, Royal Society of Chemistry

     David Walt

137. 
     Genome-Wide SNP-Genotyping Array to Study the Evolution of the Human Pathogen Vibrio vulnificus Biotype 3

     Article • PLOS One, December 2014, PLOS

     David Walt

138. 
     Advancing the speed, sensitivity and accuracy of biomolecular detection using multi-length-scale engineering

     Article • Nature Nanotechnology, December 2014, Springer Science + Business Media

     David Walt

139. 
     Disease Detection by Ultrasensitive Quantification of Microdosed Synthetic Urinary Biomarkers

     Article • Journal of the American Chemical Society, September 2014, American Chemical Society (ACS)

     David Walt

140. 
     Observing Single Enzyme Molecules Interconvert between Activity States upon Heating

     Article • PLOS One, January 2014, PLOS

     David Walt

141. 
     Salivary Inflammatory Mediator Profiling and Correlation to Clinical Disease Markers in Asthma

     Article • PLOS One, January 2014, PLOS

     David Walt

142. 
     An automated integrated platform for rapid and sensitive multiplexed protein profiling using human saliva samples

     Article • Lab on a Chip, January 2014, Royal Society of Chemistry

     David Walt

143. 
     Protein measurements in microwells

     Article • Lab on a Chip, January 2014, Royal Society of Chemistry

     David Walt

144. 
     Elucidating the relationship between substrate and inhibitor binding to the active sites of tetrameric β-galactosidase

     Article • Chemical Science, January 2014, Royal Society of Chemistry

     David Walt

145. 
     Elucidating Restriction Endonucleases Reaction Mechanisms via Dwell-Time Distribution Analysis

     Article • Biophysical Journal, January 2014, Elsevier

     David Walt

146. 
     Multiplexed Fluorescent Microarray for Human Salivary Protein Analysis Using Polymer Microspheres and Fiber-optic Bundles

     Article • Journal of Visualized Experiments, October 2013, MyJove Corporation

     David Walt

147. 
     Multiplexed Salivary Protein Profiling for Patients with Respiratory Diseases Using Fiber-Optic Bundles and Fluorescent Antibody-Based Microarrays

     Article • Analytical Chemistry, September 2013, American Chemical Society (ACS)

     David Walt

148. 
     Measuring Atomic Emission from Beacons for Long-Distance Chemical Signaling

     Article • Analytical Chemistry, September 2013, American Chemical Society (ACS)

     David Walt

149. 
     Assessing the Stochastic Intermittency of Single Quantum Dot Luminescence for Robust Quantification of Biomolecules

     Article • Analytical Chemistry, May 2013, American Chemical Society (ACS)

     David Walt

150. 
     Direct Detection of Bacterial Genomic DNA at Sub-Femtomolar Concentrations Using Single Molecule Arrays

     Article • Analytical Chemistry, January 2013, American Chemical Society (ACS)

     David Walt

151. 
     Dynamic microbead arrays for biosensing applications

     Article • Lab on a Chip, January 2013, Royal Society of Chemistry

     David Walt

152. 
     Optical Methods for Single Molecule Detection and Analysis

     Article • Analytical Chemistry, December 2012, American Chemical Society (ACS)

     David Walt

153. 
     Serum levels of BMP‐2, 4, 7 and AHSG in patients with degenerative joint disease requiring total arthroplasty of the hip and temporomandibular joints

     Article • Journal of Orthopaedic Research®, July 2012, Wiley

     David Walt

154. 
     Oil-sealed femtoliter fiber-optic arrays for single molecule analysis

     Article • Lab on a Chip, January 2012, Royal Society of Chemistry

     David Walt

155. 
     Single-Molecule Studies of Restriction Endonuclease Kinetics

     Article • Biophysical Journal, January 2012, Elsevier

     David Walt

156. 
     Competencies: A Cure for Pre-Med Curriculum

     Article • Science, November 2011, American Association for the Advancement of Science

     David Walt

157. 
     Robust error correction in infofuses

     Article • Proceedings of the Royal Society A Mathematical Physical and Engineering Sciences, September 2011, Royal Society Publishing

     David Walt

158. 
     InfoBiology by printed arrays of microorganism colonies for timed and on-demand release of messages

     Article • Proceedings of the National Academy of Sciences, September 2011, Proceedings of the National Academy of Sciences

     David Walt

159. 
     Whole-saliva Proteolysis and Its Impact on Salivary Diagnostics

     Article • Journal of Dental Research, September 2011, SAGE Publications

     David Walt

160. 
     Artificial Noses

     Article • Annual Review of Biomedical Engineering, August 2011, Annual Reviews

     David Walt

161. 
     Single Cell Time-resolved Quorum Responses Reveal Dependence on Cell Density and Configuration

     Article • Journal of Biological Chemistry, June 2011, Elsevier

     David Walt

162. 
     Salivary Inflammatory Mediator Profiling and Correlation to Clinical Disease Markers in Pediatric Atopic Asthma

     Article • Journal of Allergy and Clinical Immunology, February 2011, Elsevier

     David Walt

163. 
     Dynamic Biomolecule Sensing Bead Array Held by Optical Tweezers

     Article • January 2011, Optical Society of America (OSA)

     David Walt

164. 
     Lessons learned from the introduction of personalized genotyping into a medical school curriculum

     Article • Genetics in Medicine, January 2011, Elsevier

     David Walt

165. 
     Bead-based optical fiber arrays for artificial olfaction

     Article • Current Opinion in Chemical Biology, December 2010, Elsevier

     David Walt

166. 
     Visualizing Fluorescence: Using a Homemade Fluorescence “Microscope” To View Latent Fingerprints on Paper

     Article • Journal of Chemical Education, July 2010, American Chemical Society (ACS)

     David Walt

167. 
     Single-molecule enzyme-linked immunosorbent assay detects serum proteins at subfemtomolar concentrations

     Article • Nature Biotechnology, May 2010, Springer Science + Business Media

     David Walt

168. 
     Analytical Chemistry on the Femtoliter Scale

     Article • Angewandte Chemie, May 2010, Wiley

     David Walt

169. 
     Synthesis and Biological Testing of Penicillins: An Investigative Approach to the Undergraduate Teaching Laboratory

     Article • Journal of Chemical Education, March 2010, American Chemical Society (ACS)

     David Walt

170. 
     Note: Toward multiple addressable optical trapping

     Article • Review of Scientific Instruments, February 2010, American Institute of Physics

     David Walt

171. 
     Fibre optic microarrays

     Article • Chemical Society Reviews, January 2010, Royal Society of Chemistry

     David Walt

172. 
     Detection and Classification of Ignitable Liquid Residues Using a Fluorescence‐Based Vapor‐Sensitive Microsphere Array*

     Article • Journal of Forensic Sciences, January 2010, Wiley

     David Walt

173. 
     Optical-fiber arrays for vapor sensing

     Article • Sensors and Actuators B Chemical, November 2009, Elsevier

     David Walt

174. 
     Ubiquitous Sensors: When Will They Be Here?

     Article • ACS Nano, October 2009, American Chemical Society (ACS)

     David Walt

175. 
     Intelligent Medical Diagnostics via Molecular Logic

     Article • Journal of the American Chemical Society, August 2009, American Chemical Society (ACS)

     David Walt

176. 
     Chromatically Resolved Optical Microscope (CROMoscope): A Grating-Based Instrument for Spectral Imaging

     Article • Analytical Chemistry, August 2009, American Chemical Society (ACS)

     David Walt

177. 
     Microsphere-Based Rolling Circle Amplification Microarray for the Detection of DNA and Proteins in a Single Assay

     Article • Analytical Chemistry, June 2009, American Chemical Society (ACS)

     David Walt

178. 
     Temporally Resolved Fluorescence Spectroscopy of a Microarray-Based Vapor Sensing System

     Article • Analytical Chemistry, June 2009, American Chemical Society (ACS)

     David Walt

179. 
     Design, Implementation, and Field Testing of a Portable Fluorescence-Based Vapor Sensor

     Article • Analytical Chemistry, June 2009, American Chemical Society (ACS)

     David Walt

180. 
     Infochemistry and infofuses for the chemical storage and transmission of coded information

     Article • Proceedings of the National Academy of Sciences, June 2009, Proceedings of the National Academy of Sciences

     David Walt

181. 
     CMOS Microelectrode Array for Electrochemical Lab-on-a-Chip Applications

     Article • IEEE Sensors Journal, June 2009, Institute of Electrical & Electronics Engineers (IEEE)

     David Walt

182. 
     Multiplexed Sandwich Immunoassays Using Electrochemiluminescence Imaging Resolved at the Single Bead Level

     Article • Journal of the American Chemical Society, April 2009, American Chemical Society (ACS)

     David Walt

183. 
     DNA detection on ultrahigh-density optical fiber-based nanoarrays

     Article • Biosensors and Bioelectronics, April 2009, Elsevier

     David Walt

184. 
     Mechanistic Aspects of Horseradish Peroxidase Elucidated through Single-Molecule Studies

     Article • Journal of the American Chemical Society, April 2009, American Chemical Society (ACS)

     David Walt

185. 
     Fiber-Optic Microsphere-Based Antibody Array for the Analysis of Inflammatory Cytokines in Saliva

     Article • Analytical Chemistry, February 2009, American Chemical Society (ACS)

     David Walt

186. 
     Salivary Analyte Profiles and Asthma Severity

     Article • Journal of Allergy and Clinical Immunology, February 2009, Elsevier

     David Walt

187. 
     Measurement science: the engine of chemical biology

     Article • Current Opinion in Chemical Biology, October 2008, Elsevier

     David Walt

188. 
     Detection of Single-Molecule DNA Hybridization Using Enzymatic Amplification in an Array of Femtoliter-Sized Reaction Vessels

     Article • Journal of the American Chemical Society, September 2008, American Chemical Society (ACS)

     David Walt

189. 
     Use of Colorimetric Test Strips for Monitoring the Effect of Hemodialysis on Salivary Nitrite and Uric Acid in Patients with End-Stage Renal Disease: A Proof of Principle

     Article • Clinical Chemistry, September 2008, Oxford University Press (OUP)

     David Walt

190. 
     Multiplexed Spectroscopic Detections

     Article • Annual Review of Analytical Chemistry, July 2008, Annual Reviews

     David Walt

191. 
     Distinct and Long-Lived Activity States of Single Enzyme Molecules

     Article • Journal of the American Chemical Society, March 2008, American Chemical Society (ACS)

     David Walt

192. 
     Salivary Cytokine amd Pathogen Detection in Patients with Asthma

     Article • Journal of Allergy and Clinical Immunology, February 2008, Elsevier

     David Walt

193. 
     Very High Density Sensing Arrays

     Article • Chemical Reviews, January 2008, American Chemical Society (ACS)

     David Walt

194. 
     OPTRODE-BASED FIBER OPTIC BIOSENSORS (BIO-OPTRODE)

     Article • January 2008, Elsevier

     David Walt

195. 
     Stochastic inhibitor release and binding from single-enzyme molecules

     Article • Proceedings of the National Academy of Sciences, November 2007, Proceedings of the National Academy of Sciences

     David Walt

196. 
     Multianalyte Single-Cell Analysis with Multiple Cell Lines Using a Fiber-Optic Array

     Article • Analytical Chemistry, November 2007, American Chemical Society (ACS)

     David Walt

197. 
     Optical‐fiber bundles

     Article • European Journal of Biochemistry, October 2007, Wiley

     David Walt

198. 
     Smells like bread

     Article • Nature Chemical Biology, June 2007, Springer Science + Business Media

     David Walt

199. 
     Microsensor Arrays for Saliva Diagnostics

     Article • Annals of the New York Academy of Sciences, March 2007, Wiley

     David Walt

200. 
     Fiber-based single cell analysis of reporter gene expression in yeast two-hybrid systems

     Article • Analytical Biochemistry, January 2007, Elsevier

     David Walt

201. 
     Phenotypic Consequences of Promoter-Mediated Transcriptional Noise

     Article • Molecular Cell, December 2006, Elsevier

     Gabor Balazsi, David Walt

202. 
     Parallel microparticle manipulation using an imaging fiber-bundle-based optical tweezer array and a digital micromirror device

     Article • Applied Physics Letters, November 2006, American Institute of Physics

     David Walt

203. 
     Fiber Optic Array Biosensors

     Article • BioTechniques, November 2006, Future Science

     David Walt

204. 
     Detection of inflammatory cytokines using a fiber optic microsphere immunoassay array

     Article • October 2006, SPIE

     David Walt

205. 
     Fiber-Optic Microarray for Simultaneous Detection of Multiple Harmful Algal Bloom Species

     Article • Applied and Environmental Microbiology, September 2006, ASM Journals

     David Walt

206. 
     Fibre optic microarrays for the detection and enumeration of harmful algal bloom species

     Article • African Journal of Marine Science, September 2006, Informa UK Limited

     David Walt

207. 
     Detecting oxygen consumption in the proximity of Saccharomyces cerevisiae cells using self‐assembled fluorescent nanosensors

     Article • Biotechnology and Bioengineering, July 2006, Wiley

     David Walt

208. 
     Digital Readout of Target Binding with Attomole Detection Limits via Enzyme Amplification in Femtoliter Arrays

     Article • Journal of the American Chemical Society, April 2006, American Chemical Society (ACS)

     David Walt

209. 
     Microbead Chemical Switches:  An Approach to Detection of Reactive Organophosphate Chemical Warfare Agent Vapors

     Article • Journal of the American Chemical Society, March 2006, American Chemical Society (ACS)

     David Walt

210. 
     Duplexed sandwich immunoassays on a fiber-optic microarray

     Article • Analytica Chimica Acta, March 2006, Elsevier

     David Walt

211. 
     Digital Concentration Readout of Single Enzyme Molecules Using Femtoliter Arrays and Poisson Statistics

     Article • Nano Letters, February 2006, American Chemical Society (ACS)

     David Walt

212. 
     Fiber-Optic Microsphere-Based Arrays for Multiplexed Biological Warfare Agent Detection

     Article • Analytical Chemistry, January 2006, American Chemical Society (ACS)

     David Walt

213. 
     Biosensing

     Article • January 2006, Springer Science + Business Media

     David Walt

214. 
     Detection of biological warfare agents with fiber-optic microsphere-based DNA arrays

     Article • November 2005, SPIE

     David Walt

215. 
     Microsphere based saliva diagnostics

     Article • November 2005, SPIE

     David Walt

216. 
     Detecting Biological Warfare Agents

     Article • Emerging Infectious Diseases, October 2005, Centers for Disease Control and Prevention (CDC)

     David Walt

217. 
     Monitoring “promiscuous” drug effects on single cells of multiple cell types

     Article • Analytical Biochemistry, October 2005, Elsevier

     David Walt

218. 
     Optical fiber-based sensors: application to chemical biology

     Article • Current Opinion in Chemical Biology, October 2005, Elsevier

     David Walt

219. 
     Fabrication and optical characterization of imaging fiber-based nanoarrays

     Article • Talanta, September 2005, Elsevier

     David Walt

220. 
     Extending the Longevity of Fluorescence-Based Sensor Arrays Using Adaptive Exposure

     Article • Analytical Chemistry, August 2005, American Chemical Society (ACS)

     David Walt

221. 
     Development of a Microfluidic Platform with an Optical Imaging Microarray Capable of Attomolar Target DNA Detection

     Article • Analytical Chemistry, August 2005, American Chemical Society (ACS)

     David Walt

222. 
     Synthesis of gold–poly(methyl methacrylate) core–shell nanoparticles by surface‐confined atom transfer radical polymerization at elevated temperature

     Article • Journal of Polymer Science Part A Polymer Chemistry, July 2005, Wiley

     David Walt

223. 
     Personalized Exposure Assessment: Promising Approaches for Human Environmental Health Research

     Article • Environmental Health Perspectives, July 2005, Environmental Health Perspectives

     David Walt

224. 
     Detection of Salmonella spp. Using Microsphere-Based, Fiber-Optic DNA Microarrays

     Article • Analytical Chemistry, June 2005, American Chemical Society (ACS)

     David Walt

225. 
     Miniature Analytical Methods for Medical Diagnostics

     Article • Science, April 2005, American Association for the Advancement of Science

     David Walt

226. 
     Individual cell migration analysis using fiber-optic bundles

     Article • Analytical and Bioanalytical Chemistry, April 2005, Springer Science + Business Media

     David Walt

227. 
     Electronic Noses: Wake Up and Smell the Coffee.

     Article • Analytical Chemistry, February 2005, American Chemical Society (ACS)

     David Walt

228. 
     Progress toward the determination of Sr2+ in highly basic solutions using imaging optical fiber sensor arrays

     Article • Journal of Materials Chemistry, January 2005, Royal Society of Chemistry

     David Walt

229. 
     Array-Based Binary Analysis for Bacterial Typing

     Article • Analytical Chemistry, December 2004, American Chemical Society (ACS)

     David Walt

230. 
     Simultaneously Monitoring Gene Expression Kinetics and Genetic Noise in Single Cells by Optical Well Arrays

     Article • Analytical Chemistry, September 2004, American Chemical Society (ACS)

     David Walt

231. 
     Fabrication of Gold Microtubes and Microwires in High Aspect Ratio Capillary Arrays

     Article • Journal of the American Chemical Society, August 2004, American Chemical Society (ACS)

     David Walt

232. 
     Optical fiber-based biosensors

     Article • Analytical and Bioanalytical Chemistry, June 2004, Springer Science + Business Media

     David Walt

233. 
     An imaging fiber-based optical tweezer array for microparticle array assembly

     Article • Applied Physics Letters, May 2004, American Institute of Physics

     David Walt

234. 
     Living Bacterial Cell Array for Genotoxin Monitoring

     Article • Analytical Chemistry, April 2004, American Chemical Society (ACS)

     David Walt

235. 
     Increasing lifetimes of fiber-optic sensor arrays for chemical warfare detection

     Article • March 2004, SPIE

     David Walt

236. 
     Microsphere-based DNA biosensor arrays

     Article • March 2004, SPIE

     David Walt

237. 
     Reversible Ratiometric Probe for Quantitative DNA Measurements

     Article • Analytical Chemistry, January 2004, American Chemical Society (ACS)

     David Walt

238. 
     Encoded Fiber‐Optic Microsphere Arrays for Probing Protein–Carbohydrate Interactions

     Article • Angewandte Chemie, November 2003, Wiley

     David Walt

239. 
     Combinatorial Decoding:  An Approach for Universal DNA Array Fabrication

     Article • Journal of the American Chemical Society, October 2003, American Chemical Society (ACS)

     David Walt

240. 
     Spatially Resolved Electrochemiluminescence on an Array of Electrode Tips

     Article • Analytical Chemistry, July 2003, American Chemical Society (ACS)

     David Walt

241. 
     Information Coding in Artificial Olfaction Multisensor Arrays

     Article • Analytical Chemistry, July 2003, American Chemical Society (ACS)

     David Walt

242. 
     High-density, microsphere-based fiber optic DNA microarrays

     Article • Biosensors and Bioelectronics, May 2003, Elsevier

     David Walt

243. 
     Optical imaging fiber-based live bacterial cell array biosensor

     Article • Analytical Biochemistry, April 2003, Elsevier

     David Walt

244. 
     Enhancing Vapor Sensor Discrimination by Mimicking a Canine Nasal Cavity Flow Environment

     Article • Journal of the American Chemical Society, March 2003, American Chemical Society (ACS)

     David Walt

245. 
     The Use of Optical Fiber Bundles Combined with Electrochemistry for Chemical Imaging

     Article • ChemPhysChem, February 2003, Wiley

     David Walt

246. 
     Fluorescence-based fibre optic arrays: a universal platform for sensing

     Article • Chemical Society Reviews, January 2003, Royal Society of Chemistry

     David Walt

247. 
     Combined imaging and chemical sensing of l-glutamate release from the foregut plexus of the Lepidopteran, Manduca sexta

     Article • Journal of Neuroscience Methods, October 2002, Elsevier

     David Walt

248. 
     Imaging optical sensor arrays

     Article • Current Opinion in Chemical Biology, October 2002, Elsevier

     David Walt

249. 
     Fluorescence-based nucleic acid detection and microarrays

     Article • Analytica Chimica Acta, September 2002, Elsevier

     David Walt

250. 
     Top-to-bottom functional design

     Article • Nature Materials, September 2002, Springer Science + Business Media

     David Walt

251. 
     Automatic decoding of sensor types within randomly ordered, high-density optical sensor arrays

     Article • Analytical and Bioanalytical Chemistry, August 2002, Springer Science + Business Media

     David Walt

252. 
     Cross-Reactive Optical Sensing Arrays

     Article • July 2002, American Chemical Society (ACS)

     David Walt

253. 
     Optical Imaging Fiber-Based Single Live Cell Arrays:  A High-Density Cell Assay Platform

     Article • Analytical Chemistry, May 2002, American Chemical Society (ACS)

     David Walt

254. 
     Randomly-Ordered High-Density Fiber Optic Microsensor Array Sensors

     Article • March 2002, American Chemical Society (ACS)

     David Walt

255. 
     High-Density Fiber-Optic Genosensor Microsphere Array Capable of Zeptomole Detection Limits

     Article • Analytical Chemistry, March 2002, American Chemical Society (ACS)

     David Walt

256. 
     Fabrication of an Optoelectrochemical Microring Array

     Article • Analytical Chemistry, February 2002, American Chemical Society (ACS)

     David Walt

257. 
     <title>Artificial nose employing microsphere sensors for detection of volatile organic compounds</title>

     Article • February 2002, SPIE

     David Walt

258. 
     <title>Optical imaging fiber-based recombinant bacterial biosensor</title>

     Article • February 2002, SPIE

     David Walt

259. 
     <title>High-density fiber optic biosensor arrays</title>

     Article • February 2002, SPIE

     David Walt

260. 
     Aluminum Surface Corrosion and the Mechanism of Inhibitors Using pH and Metal Ion Selective Imaging Fiber Bundles

     Article • Analytical Chemistry, January 2002, American Chemical Society (ACS)

     David Walt

261. 
     Preparation of Polymer Coated Gold Nanoparticles by Surface-Confined Living Radical Polymerization at Ambient Temperature

     Article • Nano Letters, January 2002, American Chemical Society (ACS)

     David Walt

262. 
     Array-to-Array Transfer of an Artificial Nose Classifier

     Article • Analytical Chemistry, September 2001, American Chemical Society (ACS)

     David Walt

263. 
     A Cross-Reactive, Class-Selective Enzymatic Array Assay

     Article • Journal of the American Chemical Society, August 2001, American Chemical Society (ACS)

     David Walt

264. 
     Stability and Exchange Studies of Alkanethiol Monolayers on Gold-Nanoparticle-Coated Silica Microspheres

     Article • Langmuir, July 2001, American Chemical Society (ACS)

     David Walt

265. 
     Field-Deployable Sniffer for 2,4-Dinitrotoluene Detection

     Article • Environmental Science & Technology, June 2001, American Chemical Society (ACS)

     David Walt

266. 
     Interference filter refinement for artificial nose fluorescence sensing

     Article • Optical Engineering, June 2001, SPIE

     David Walt

267. 
     Nanosphere−Microsphere Assembly:  Methods for Core−Shell Materials Preparation

     Article • Chemistry of Materials, May 2001, American Chemical Society (ACS)

     David Walt

268. 
     Optical Multibead Arrays for Simple and Complex Odor Discrimination

     Article • Analytical Chemistry, May 2001, American Chemical Society (ACS)

     David Walt

269. 
     A Duplexed Microsphere-Based Fluorescent Immunoassay

     Article • Analytical Biochemistry, April 2001, Elsevier

     David Walt

270. 
     A fiber-optic lactate sensor based on bacterial cytoplasmic membranes

     Article • Biosensors and Bioelectronics, January 2001, Elsevier

     David Walt

271. 
     Peer Reviewed: Biological Warfare Detection

     Article • Analytical Chemistry, December 2000, American Chemical Society (ACS)

     David Walt

272. 
     Production of Hollow Polymeric Microspheres by Surface-Confined Living Radical Polymerization on Silica Templates

     Article • Chemistry of Materials, November 2000, American Chemical Society (ACS)

     David Walt

273. 
     High-Density Fiber-Optic DNA Random Microsphere Array

     Article • Analytical Chemistry, October 2000, American Chemical Society (ACS)

     David Walt

274. 
     A Combinatorial Approach To Discover New Chelators for Optical Metal Ion Sensing

     Article • Analytical Chemistry, September 2000, American Chemical Society (ACS)

     David Walt

275. 
     Cross-Reactive Chemical Sensor Arrays

     Article • Chemical Reviews, June 2000, American Chemical Society (ACS)

     David Walt

276. 
     Guest Editorial

     Article • Chemical Reviews, June 2000, American Chemical Society (ACS)

     David Walt

277. 
     A Fiber-Optic Microarray Biosensor Using Aptamers as Receptors

     Article • Analytical Biochemistry, June 2000, Elsevier

     David Walt

278. 
     A Novel Monte-Carlo Based Method for Quantitative Thin Film X-Ray Microanalysis

     Article • Microchimica Acta, April 2000, Springer Science + Business Media

     David Walt

279. 
     High-Speed Fluorescence Detection of Explosives-like Vapors

     Article • Analytical Chemistry, March 2000, American Chemical Society (ACS)

     David Walt

280. 
     Application of High-Density Optical Microwell Arrays in a Live-Cell Biosensing System

     Article • Analytical Biochemistry, February 2000, Elsevier

     David Walt

281. 
     Bead-based Fiber-Optic Arrays

     Article • Science, January 2000, American Association for the Advancement of Science

     David Walt

282. 
     Screening unlabeled DNA targets with randomly ordered fiber-optic gene arrays

     Article • Nature Biotechnology, January 2000, Springer Science + Business Media

     David Walt

283. 
     Organic vapor detection with fiber optic bead arrays

     Article • December 1999, SPIE

     David Walt

284. 
     Combined Imaging and Chemical Sensing of Fertilization-Induced Acid Release from Single Sea Urchin Eggs

     Article • Analytical Biochemistry, September 1999, Elsevier

     David Walt

285. 
     High-speed fluorescence detection of explosives vapor

     Article • August 1999, SPIE

     David Walt

286. 
     A Far-Field-Viewing Sensor for Making Analytical Measurements in Remote Locations

     Article • Analytical Chemistry, June 1999, American Chemical Society (ACS)

     David Walt

287. 
     Fluorescent Excitation Transfer Immunoassay for the Determination of Spinosyn A in Water

     Article • Journal of Agricultural and Food Chemistry, May 1999, American Chemical Society (ACS)

     David Walt

288. 
     Convergent, Self-Encoded Bead Sensor Arrays in the Design of an Artificial Nose

     Article • Analytical Chemistry, May 1999, American Chemical Society (ACS)

     David Walt

289. 
     An Autonomous Sensor and Telemetry System for Low-Level pCO2 Measurements in Seawater

     Article • Analytical Chemistry, February 1999, American Chemical Society (ACS)

     David Walt

290. 
     <title>Immunofluorescence detection methods using microspheres</title>

     Article • January 1999, SPIE

     David Walt

291. 
     An Autonomous Sensor and Telemetry System for Low-Level pCO2 Measurements in Seawater

     Article • Analytical Chemistry, December 1998, American Chemical Society (ACS)

     David Walt

292. 
     Designing optical sensor arrays with enhanced sensitivity for explosives detection

     Article • September 1998, SPIE

     David Walt

293. 
     Optical sensor arrays for odor recognition

     Article • Biosensors and Bioelectronics, September 1998, Elsevier

     David Walt

294. 
     Current trends in `artificial-nose' technology

     Article • Trends in Biotechnology, June 1998, Elsevier

     David Walt

295. 
     An olfactory neuronal network for vapor recognition in an artificial nose

     Article • Biological Cybernetics, May 1998, Springer Science + Business Media

     David Walt

296. 
     <title>Making sensors out of disarray: optical sensor microarrays</title>

     Article • May 1998, SPIE

     David Walt

297. 
     Fiber Optic Imaging Sensors

     Article • Accounts of Chemical Research, May 1998, American Chemical Society (ACS)

     David Walt

298. 
     The Use of Optical-Imaging Fibers for the Fabrication of Array Sensors

     Article • April 1998, American Chemical Society (ACS)

     David Walt

299. 
     Randomly Ordered Addressable High-Density Optical Sensor Arrays

     Article • Analytical Chemistry, March 1998, American Chemical Society (ACS)

     David Walt

300. 
     Identification of Multiple Analytes Using an Optical Sensor Array and Pattern Recognition Neural Networks

     Article • Analytical Chemistry, November 1997, American Chemical Society (ACS)

     David Walt

301. 
     Oxygen Sensing Properties of a New Ruthenium (II) Compound

     Article • Analytical Letters, October 1997, Taylor & Francis

     David Walt

302. 
     Fiberoptic DNA Sensor Array Capable of Detecting Point Mutations

     Article • Analytical Biochemistry, September 1997, Elsevier

     David Walt

303. 
     Generating Sensor Diversity through Combinatorial Polymer Synthesis

     Article • Analytical Chemistry, September 1997, American Chemical Society (ACS)

     David Walt

304. 
     Fluorescence monitoring of the microenvironmental pH of highly charged polymers

     Article • Journal of Polymer Science Part A Polymer Chemistry, July 1997, Wiley

     David Walt

305. 
     Fast Temporal Response Fiber-Optic Chemical Sensors Based on the Photodeposition of Micrometer-Scale Polymer Arrays

     Article • Analytical Chemistry, June 1997, American Chemical Society (ACS)

     David Walt

306. 
     In Situ Fluorescence Imaging of Localized Corrosion with a pH-Sensitive Imaging Fiber

     Article • Analytical Chemistry, April 1997, American Chemical Society (ACS)

     David Walt

307. 
     Simultaneous monitoring of pH, CO2 and O2 using an optical imaging fiber

     Article • Analytica Chimica Acta, March 1997, Elsevier

     David Walt

308. 
     Toward a near-field optical array

     Article • Review of Scientific Instruments, March 1997, American Institute of Physics

     David Walt

309. 
     Multianalyte biosensors on optical imaging bundles

     Article • Biosensors and Bioelectronics, January 1997, Elsevier

     David Walt

310. 
     A fiber-optic DNA biosensor microarray for the analysis of gene expression

     Article • Nature Biotechnology, December 1996, Springer Science + Business Media

     David Walt

311. 
     A chemical-detecting system based on a cross-reactive optical sensor array

     Article • Nature, August 1996, Springer Science + Business Media

     David Walt

312. 
     Rapid Analyte Recognition in a Device Based on Optical Sensors and the Olfactory System

     Article • Analytical Chemistry, July 1996, American Chemical Society (ACS)

     David Walt

313. 
     Optical arrays and pattern recognition in the design of an artificial nose

     Article • April 1996, SPIE

     David Walt

314. 
     Ordered Nanowell Arrays

     Article • Chemistry of Materials, January 1996, American Chemical Society (ACS)

     David Walt

315. 
     Editorial

     Article • Applied Biochemistry and Biotechnology, January 1996, Springer Science + Business Media

     David Walt

316. 
     Improved fiber-optic chemical sensor for penicillin

     Article • Analytical Chemistry, December 1995, American Chemical Society (ACS)

     David Walt

317. 
     Dual-Analyte Fiber-Optic Sensor for the Simultaneous and Continuous Measurement of Glucose and Oxygen

     Article • Analytical Chemistry, October 1995, American Chemical Society (ACS)

     David Walt

318. 
     <title>Fiber optic array sensors as an architecture for an artificial nose</title>

     Article • September 1995, SPIE

     David Walt

319. 
     Combined Imaging and Chemical Sensing Using a Single Optical Imaging Fiber

     Article • Analytical Chemistry, September 1995, American Chemical Society (ACS)

     David Walt

320. 
     Sensitivity enhancement of fluorescent pH indicators using pH-dependent energy transfer

     Article • Analytica Chimica Acta, September 1995, Elsevier

     David Walt

321. 
     Photodeposition of Micrometer-Scale Polymer Patterns on Optical Imaging Fibers

     Article • Science, August 1995, American Association for the Advancement of Science

     David Walt

322. 
     Analytical Applications of Optical Imaging Fibers

     Article • Analytical Chemistry, August 1995, American Chemical Society (ACS)

     David Walt

323. 
     Synthesis of pH-sensitive modified cellulose ether halfesters and their use in pH detecting systems based on fiber optics

     Article • Journal of Controlled Release, August 1995, Elsevier

     David Walt

324. 
     A Fiber-Optic Carbon Dioxide Sensor for Fermentation Monitoring

     Article • Nature Biotechnology, June 1995, Springer Science + Business Media

     David Walt

325. 
     <title>Concurrent imaging and sensing using a single optical imaging fiber</title>

     Article • May 1995, SPIE

     David Walt

326. 
     <title>Development of a penicillin biosensor using a single optical imaging fiber</title>

     Article • May 1995, SPIE

     David Walt

327. 
     <title>Simultaneous monitoring of O2, CO2, and pH using a 200-micrometer optical imaging fiber</title>

     Article • May 1995, SPIE

     David Walt

328. 
     The chemistry of enzyme and protein immobilization with glutaraldehyde

     Article • TrAC Trends in Analytical Chemistry, November 1994, Elsevier

     David Walt

329. 
     Fabrication of Patterned Sensor Arrays with Aryl Azides on a Polymer-Coated Imaging Optical Fiber Bundle

     Article • Analytical Chemistry, October 1994, American Chemical Society (ACS)

     David Walt

330. 
     Development of sensor arrays for continuous groundwater monitoring

     Article • September 1994, SPIE

     David Walt

331. 
     Optical microsensor arrays

     Article • September 1994, SPIE

     David Walt

332. 
     Development of sensor arrays using fiber optic imaging bundles

     Article • July 1994, SPIE

     David Walt

333. 
     <title>Fiber optic sensor for oceanic carbon dioxide</title>

     Article • March 1994, SPIE

     David Walt

334. 
     <title>Monitoring of fermentation parameters with fiber optics</title>

     Article • March 1994, SPIE

     David Walt

335. 
     <title>Simultaneous imaging and pH measurments with a single fiber optic imaging bundle</title>

     Article • March 1994, SPIE

     David Walt

336. 
     Fiber-Optic Immunosensors Based on Continuous Reagent Delivery

     Article • ImmunoMethods, October 1993, Elsevier

     David Walt

337. 
     Fiber-optic Sensor for Continuous Monitoring of Fermentation pH

     Article • Nature Biotechnology, June 1993, Springer Science + Business Media

     David Walt

338. 
     <title>Simultaneous imaging and pH measurement with a single 250-micron-diameter optical fiber</title>

     Article • May 1993, SPIE

     David Walt

339. 
     <title>Fiber optic sensor based on microencapsulated reagents</title>

     Article • April 1993, SPIE

     David Walt

340. 
     <title>Microfabrication of optical sensor array</title>

     Article • April 1993, SPIE

     David Walt

341. 
     Fluorescent optical sensors

     Article • Applied Biochemistry and Biotechnology, April 1993, Springer Science + Business Media

     David Walt

342. 
     Multiple-indicator fiber-optic sensor for high-resolution pCO2 sea water measurements

     Article • Analytica Chimica Acta, March 1993, Elsevier

     David Walt

343. 
     pH-Dependent fluorescence and singlet energy transfer in water-soluble polymers containing eosin and phenol red chromophores

     Article • Journal of Fluorescence, December 1992, Springer Science + Business Media

     David Walt

344. 
     Development of a fiber optic sensor for measurement of pCO2 in sea water: design criteria and sea trials

     Article • Deep Sea Research Part A Oceanographic Research Papers, June 1992, Elsevier

     David Walt

345. 
     Fiber-optic sensors for continuous clinical monitoring

     Article • Proceedings of the IEEE, June 1992, Institute of Electrical & Electronics Engineers (IEEE)

     David Walt

346. 
     <title>Spatially resolved photopolymerized image-ready single-fiber sensor for blood gas analysis</title>

     Article • April 1992, SPIE

     David Walt

347. 
     A fibre-optic chemical sensor with discrete sensing sites

     Article • Nature, September 1991, Springer Science + Business Media

     David Walt

348. 
     Enzyme-catalyzed synthesis of fluoromalonyl-CoA

     Article • Bioorganic Chemistry, September 1991, Elsevier

     David Walt

349. 
     Fiber-optic organic vapor sensor

     Article • Environmental Science & Technology, July 1991, American Chemical Society (ACS)

     David Walt

350. 
     A new chemical method for synthesizing and recycling acyl coenzyme A thioesters

     Article • The Journal of Organic Chemistry, May 1991, American Chemical Society (ACS)

     David Walt

351. 
     Sensitivity enhancement of fluorescent pH indicators by inner filter effects

     Article • Analytical Chemistry, April 1991, American Chemical Society (ACS)

     David Walt

352. 
     Antibody-based fiber optic sensors for environmental and process-control applications

     Article • March 1991, SPIE

     David Walt

353. 
     Chemical Sensors Based on Controlled-Release Polymer Systems

     Article • Science, February 1991, American Association for the Advancement of Science

     David Walt

354. 
     pH-dependent fluorescence of merocyanine-eosin-labeled water-soluble polymers

     Article • Macromolecules, October 1990, American Chemical Society (ACS)

     David Walt

355. 
     Continuous clinical monitoring using fiber optic sensors

     Article • August 1990, SPIE

     David Walt

356. 
     Fiber optic sensors based on time-release polymers

     Article • July 1990, SPIE

     David Walt

357. 
     Enzyme-catalyzed synthesis of citric acid using acetyl-coenzyme a recycling in a two-phase system

     Article • Bioorganic Chemistry, June 1990, Elsevier

     David Walt

358. 
     Intramolecular fluorescence self-quenching of fluoresceinamine

     Article • Journal of the American Chemical Society, March 1990, American Chemical Society (ACS)

     David Walt

359. 
     Plasma modification and collagen binding to PTFE grafts

     Article • Journal of Colloid and Interface Science, October 1989, Elsevier

     David Walt

360. 
     Avidin-biotin coupling as a general method for preparing enzyme-based fiber-optic sensors

     Article • Analytical Chemistry, May 1989, American Chemical Society (ACS)

     David Walt

361. 
     Fiber-optic sensors based on reagent delivery with controlled-release polymers

     Article • Analytical Chemistry, January 1989, American Chemical Society (ACS)

     David Walt

362. 
     Fiber-Optic Chemical Sensors Based On Energy Transfer

     Article • June 1988, SPIE

     David Walt

363. 
     Fiber Optic Chemical Sensors Using Immobilized Bioreceptors

     Article • June 1988, SPIE

     David Walt

364. 
     Acetyl coenzyme A synthetase catalyzed reactions of coenzyme A with α,β-unsaturated carboxylic acids

     Article • Analytical Biochemistry, May 1988, Elsevier

     David Walt

365. 
     A fiber-optic sensor for CO2 measurement

     Article • Talanta, February 1988, Elsevier

     David Walt

366. 
     Polymer immobilized enzyme optrodes for the detection of penicillin

     Article • Analytical Chemistry, December 1987, American Chemical Society (ACS)

     David Walt

367. 
     Calculation for fluorescence modulation by absorbing species and its application to measurements using optical fibers

     Article • Analytical Chemistry, October 1987, American Chemical Society (ACS)

     David Walt

368. 
     Preparation Of Small Diameter Sensors For Continuous Clinical Monitoring

     Article • April 1987, SPIE

     David Walt

369. 
     Physiological pH fiber-optic chemical sensor based on energy transfer

     Article • Analytical Chemistry, February 1987, American Chemical Society (ACS)

     David Walt

370. 
     Enzymic synthesis of L-acetylcarnitine and citric acid using acetyl coenzyme A recycling

     Article • The Journal of Organic Chemistry, July 1986, American Chemical Society (ACS)

     David Walt

371. 
     Polymer Modification of Fiber Optic Chemical Sensors as a Method of Enhancing Fluorescence Signal for pH Measurement

     Article • Analytical Chemistry, June 1986, American Chemical Society (ACS)

     David Walt

372. 
     Polymer modification of fiber optic chemical sensors as a method of enhancing fluorescence signal for pH measurement

     Article • Analytical Chemistry, June 1986, American Chemical Society (ACS)

     David Walt

373. 
     Immobilization of enzymes in polymer supports

     Article • Journal of Chemical Education, April 1986, American Chemical Society (ACS)

     David Walt

374. 
     The effect of gravity on initial microbial adhesion

     Article • Journal of Colloid and Interface Science, October 1985, Elsevier

     David Walt

375. 
     Clinical Measurements Using Fiber Optics And Optrodes

     Article • October 1984, SPIE

     David Walt

376. 
     An efficient chemical and enzymic synthesis of nicotinamide adenine dinucleotide (NAD+)

     Article • Journal of the American Chemical Society, January 1984, American Chemical Society (ACS)

     David Walt

377. 
     Anthracyclines and related substances. 3. Regiospecific total synthesis of 11-deoxydaunomycinone

     Article • Journal of the American Chemical Society, March 1981, American Chemical Society (ACS)

     David Walt

378. 
     Synthesis of nicotinamide adenine dinucleotide (NAD) from adenosine monophosphate (AMP)

     Article • Journal of the American Chemical Society, December 1980, American Chemical Society (ACS)

     David Walt

379. 
     Active Class Selection

     Article • Springer Science + Business Media

     David Walt

380. 
     Fiber Optic Sensor For Detection Of PCO/sub 2/ In Seawater

     Article • Institute of Electrical & Electronics Engineers (IEEE)

     David Walt