All Stories

  1. Model for black silicon formation just from surface temperature non-uniformities

    Article • Journal of Applied Physics, December 2018, American Institute of Physics

    Professor Ralf B Wehrspohn

  2. Fabrication of Nearly-Hyperuniform Substrates by Tailored Disorder for Photonic Applications

    Article • Advanced Optical Materials, February 2018, Wiley

    Professor Ralf B Wehrspohn

  3. Bifunctional Heterostructure Assembly of NiFe LDH Nanosheets on NiCoP Nanowires for Highly Efficient and Stable Overall Water Splitting

    Article • Advanced Functional Materials, January 2018, Wiley

    Professor Ralf B Wehrspohn

  4. Au coated PS nanopillars as a highly ordered and reproducible SERS substrate

    Article • Photonics and Nanostructures - Fundamentals and Applications, July 2017, Elsevier

    Professor Ralf B Wehrspohn

  5. High density Ag nanobranches decorated with sputtered Au nanoparticles for surface-enhanced Raman spectroscopy

    Article • Applied Surface Science, July 2017, Elsevier

    Professor Ralf B Wehrspohn

  6. Tailored Substrate Topographies by Self-Organized Colloidal Particles

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

    Professor Ralf B Wehrspohn

  7. Conversion of Bulk Metallurgical Silicon into Photocatalytic Nanoparticles by Copper-Assisted Chemical Etching

    Article • ACS Sustainable Chemistry & Engineering, September 2016, American Chemical Society (ACS)

    Professor Ralf B Wehrspohn

  8. Integrated low-temperature process for the fabrication of amorphous Si nanoparticles embedded in Al2 O3 for non-volatile memory application (Phys. Status Solidi A 9∕2016)

    Article • phys stat sol (a), September 2016, Wiley

    Professor Ralf B Wehrspohn

  9. Toward a planar black silicon technology for 50 μm-thin crystalline silicon solar cells

    Article • Optics Express, July 2016, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  10. Morphology Dependence on Surface-Enhanced Raman Scattering Using Gold Nanorod Arrays Consisting of Agglomerated Nanoparticles

    Article • Plasmonics, May 2016, Springer Science + Business Media

    Professor Ralf B Wehrspohn

  11. Enhanced density of negative fixed charges in Al 2 O 3 layers on Si through a subsequent deposition of TiO 2

    Article • April 2016, SPIE

    Professor Ralf B Wehrspohn

  12. Integrated low-temperature process for the fabrication of amorphous Si nanoparticles embedded in Al2 O3 for non-volatile memory application

    Article • phys stat sol (a), April 2016, Wiley

    Professor Ralf B Wehrspohn

  13. Absorption Enhancement Using Surface Textures Defined by a Monolayer of Tailored Nanospheres

    Article • January 2016, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  14. Photonic Crystal Backside Structures for PV Applications

    Article • January 2016, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  15. Promising Plasma Textured Black Silicon at Etch Temperatures > 0 °C for PV Applications

    Article • January 2016, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  16. Silicon Nanowires Self-Purification By Metal-Assisted Chemical Etching of Metallurgical Silicon

    Article • ECS Transactions, October 2015, The Electrochemical Society

    Professor Ralf B Wehrspohn

  17. Black metallurgical silicon for solar energy conversion

    Article • Semiconductor Science and Technology, October 2015, Institute of Physics Publishing

    Professor Ralf B Wehrspohn

  18. Cloaked contact grids on solar cells by coordinate transformations: designs and prototypes

    Article • Optica, September 2015, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  19. Properties of black silicon obtained at room-temperature by different plasma modes

    Article • Journal of Vacuum Science & Technology A Vacuum Surfaces and Films, September 2015, American Vacuum Society

    Professor Ralf B Wehrspohn

  20. Plasma-enhanced atomic-layer-deposited MoO x emitters for silicon heterojunction solar cells

    Article • Applied Physics A, June 2015, Springer Science + Business Media

    Professor Ralf B Wehrspohn

  21. Photon Management in Solar Cells

    Article • May 2015, Wiley

    Professor Ralf B Wehrspohn

  22. Optical Materials for Spectral Management

    Article • Advanced Optical Materials, April 2015, Wiley

    Professor Ralf B Wehrspohn

  23. Light Management in Solar Modules

    Article • March 2015, Wiley

    Professor Ralf B Wehrspohn

  24. Current Concepts for Optical Path Enhancement in Solar Cells

    Article • March 2015, Wiley

    Professor Ralf B Wehrspohn

  25. Black Silicon Photovoltaics

    Article • March 2015, Wiley

    Professor Ralf B Wehrspohn

  26. Light-Trapping in Solar Cells by Directionally Selective Filters

    Article • March 2015, Wiley

    Professor Ralf B Wehrspohn

  27. Front Matter

    Article • March 2015, Wiley

    Professor Ralf B Wehrspohn

  28. Photoelectrochemical hydrogen evolution of tapered silicon nanowires

    Article • Physical Chemistry Chemical Physics, January 2015, Royal Society of Chemistry

    Professor Ralf B Wehrspohn

  29. High performance H2 evolution realized in 20 μm-thin silicon nanostructured photocathodes

    Article • Journal of Materials Chemistry A, January 2015, Royal Society of Chemistry

    Professor Ralf B Wehrspohn

  30. Hydroxyl functionalization improves the surface passivation of nanostructured silicon solar cells degraded by epitaxial regrowth

    Article • RSC Advances, January 2015, Royal Society of Chemistry

    Professor Ralf B Wehrspohn

  31. Cloaking of Metal Contacts on Solar Cells

    Article • January 2015, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  32. Black Silicon Photovoltaics

    Article • Advanced Optical Materials, December 2014, Wiley

    Professor Ralf B Wehrspohn

  33. Stable Silicon Anodes for Lithium-Ion Batteries Using Mesoporous Metallurgical Silicon

    Article • Advanced Energy Materials, November 2014, Wiley

    Professor Ralf B Wehrspohn

  34. Electrochemical characteristics of plasma-etched black silicon as anodes for Li-ion batteries

    Article • Journal of Vacuum Science & Technology A Vacuum Surfaces and Films, November 2014, American Vacuum Society

    Professor Ralf B Wehrspohn

  35. Microstructural characterization of Li insertion in individual silicon nanowires

    Article • Applied Physics A, September 2014, Springer Science + Business Media

    Professor Ralf B Wehrspohn

  36. Influence of black silicon surfaces on the performance of back-contacted back silicon heterojunction solar cells

    Article • Optics Express, September 2014, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  37. Self-purification model for metal-assisted chemical etching of metallurgical silicon

    Article • Electrochimica Acta, August 2014, Elsevier

    Professor Ralf B Wehrspohn

  38. Degradation Mechanism of Al2O3Passivation in Nanostructured Si Solar Cells

    Article • Advanced Materials Interfaces, April 2014, Wiley

    Professor Ralf B Wehrspohn

  39. (Invited) Inhomogeneous Strain in Silicon Photonics

    Article • ECS Transactions, March 2014, The Electrochemical Society

    Professor Ralf B Wehrspohn

  40. Black silicon photovoltaics

    Article • January 2014, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  41. CMOS-compatible metal-stabilized nanostructured Si as anodes for lithium-ion microbatteries

    Article • Nanoscale Research Letters, January 2014, Springer Science + Business Media

    Professor Ralf B Wehrspohn

  42. Nanowires from dirty multi-crystalline Si for hydrogen generation

    Article • September 2013, SPIE

    Professor Ralf B Wehrspohn

  43. 3D photonic crystals for photon management in solar cells

    Article • September 2013, SPIE

    Professor Ralf B Wehrspohn

  44. Activation of Al2O3 passivation layers on silicon by microwave annealing

    Article • Applied Physics A, August 2013, Springer Science + Business Media

    Professor Ralf B Wehrspohn

  45. Passivation of different black silicon surfaces by ALD deposited Al2O3

    Article • June 2013, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  46. Upgraded Silicon Nanowires by Metal-Assisted Etching of Metallurgical Silicon: A New Route to Nanostructured Solar-Grade Silicon

    Article • Advanced Materials, May 2013, Wiley

    Professor Ralf B Wehrspohn

  47. Automated spray coating process for the fabrication of large-area artificial opals on textured substrates

    Article • Optics Express, April 2013, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  48. Fast electroless fabrication of uniform mesoporous silicon layers

    Article • Electrochimica Acta, April 2013, Elsevier

    Professor Ralf B Wehrspohn

  49. Purifying metallurgical silicon to solar grade silicon by metal-assisted chemical etching

    Article • January 2013, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  50. Macroporous silicon and its application in sensing

    Article • Comptes Rendus Chimie, January 2013, Elsevier

    Professor Ralf B Wehrspohn

  51. Electrochemistry and nanotechnologies: The new challenges

    Article • Comptes Rendus Chimie, January 2013, Elsevier

    Professor Ralf B Wehrspohn

  52. Opto-electronic properties of different black silicon structures passivated by thermal ALD deposited Al_2O_3

    Article • January 2013, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  53. Passivation of Optically Black Silicon by Atomic Layer Deposited Al2O3

    Article • Energy Procedia, January 2013, Elsevier

    Professor Ralf B Wehrspohn

  54. Influence of the Mobility of Pt Nanoparticles on the Anisotropic Etching Properties of Silicon

    Article • ECS Solid State Letters, December 2012, The Electrochemical Society

    Professor Ralf B Wehrspohn

  55. 3D photonic crystals for photon management in solar cells

    Article • September 2012, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  56. Black silicon for solar cell applications

    Article • June 2012, SPIE

    Professor Ralf B Wehrspohn

  57. Black silicon photovoltaics

    Article • June 2012, SPIE

    Professor Ralf B Wehrspohn

  58. Front Matter: Volume 8438

    Article • June 2012, SPIE

    Professor Ralf B Wehrspohn

  59. Analysis of surface recombination in nanowire array solar cells

    Article • June 2012, SPIE

    Professor Ralf B Wehrspohn

  60. Strained Silicon Photonics

    Article • Materials, May 2012, MDPI AG

    Professor Ralf B Wehrspohn

  61. Extremely low surface recombination velocities in black silicon passivated by atomic layer deposition

    Article • Applied Physics Letters, May 2012, American Institute of Physics

    Professor Ralf B Wehrspohn

  62. Stretching silicon's potential

    Article • Nature Materials, January 2012, Springer Science + Business Media

    Professor Ralf B Wehrspohn

  63. Light Trapping Concepts for Photon Management in Solar Cells

    Article • Green, January 2012, De Gruyter

    Professor Ralf B Wehrspohn

  64. 3D photonic crystals for photon management in solar cells

    Article • Journal of Optics, January 2012, Institute of Physics Publishing

    Professor Ralf B Wehrspohn

  65. Macroporous silicon chips for laterally resolved, multi-parametric analysis of epithelial barrier function

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

    Professor Ralf B Wehrspohn

  66. Formation of gold nanoparticles in polymeric nanowires by low-temperature thermolysis of gold mesitylene

    Article • Journal of Materials Chemistry, January 2012, Royal Society of Chemistry

    Professor Ralf B Wehrspohn

  67. Measuring Residual Stress on the Nanometer Scale - Novel Tools for Fundamental and Applied Research

    Article • MRS Proceedings, January 2012, Cambridge University Press

    Professor Ralf B Wehrspohn

  68. 3D Photonic Crystals for Photon Management in Solar Cells

    Article • January 2012, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  69. Passivation of optically black silicon wafers by atomic layer deposited Al2O3 films

    Article • January 2012, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  70. Wet chemical etched silicon structures for solar energy conversion:nano- vs micro-structures

    Article • January 2012, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  71. Interface and Material Characterization of Thin ALD-Al2O3 Layers on Crystalline Silicon

    Article • Energy Procedia, January 2012, Elsevier

    Professor Ralf B Wehrspohn

  72. Conformal Al2O3 Coatings on Black Silicon by Thermal ALD for Surface Passivation

    Article • Energy Procedia, January 2012, Elsevier

    Professor Ralf B Wehrspohn

  73. Chemical and structural study of electrically passivating Al2O3/Si interfaces prepared by atomic layer deposition

    Article • Journal of Vacuum Science & Technology A Vacuum Surfaces and Films, January 2012, American Vacuum Society

    Professor Ralf B Wehrspohn

  74. 3D photonic crystal intermediate reflectors for enhanced light-trapping in tandem solar cells

    Article • January 2012, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  75. Strain-Induced Nonlinear Optics in Silicon

    Article • December 2011, Wiley

    Professor Ralf B Wehrspohn

  76. Determination of Elastic Strains Using Electron Backscatter Diffraction in the Scanning Electron Microscope

    Article • December 2011, Wiley

    Professor Ralf B Wehrspohn

  77. 3D photonic crystals for photon management in solar cells

    Article • SPIE Newsroom, November 2011, SPIE

    Professor Ralf B Wehrspohn

  78. Mechanical Stress on the Nanoscale

    Article • November 2011, Wiley

    Professor Ralf B Wehrspohn

  79. Periodic silicon nanostructures for spectroscopic microsensors

    Article • September 2011, SPIE

    Professor Ralf B Wehrspohn

  80. Three-Dimensional Photonic Crystal Intermediate Reflectors for Enhanced Light-Trapping in Tandem Solar Cells

    Article • Advanced Materials, July 2011, Wiley

    Professor Ralf B Wehrspohn

  81. Polarization-dependent transmission properties of IOSOI W1 photonic crystal waveguides

    Article • Photonics and Nanostructures - Fundamentals and Applications, July 2011, Elsevier

    Professor Ralf B Wehrspohn

  82. Miniature infrared gas sensors using photonic crystals

    Article • Journal of Applied Physics, April 2011, American Institute of Physics

    Professor Ralf B Wehrspohn

  83. Transparent conductive oxide photonic crystals on textured substrates

    Article • Photonics and Nanostructures - Fundamentals and Applications, February 2011, Elsevier

    Professor Ralf B Wehrspohn

  84. 3D Photonic Crystal as Intermediate Reflector Layers in Micromorph Tandem Cells

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

    Professor Ralf B Wehrspohn

  85. Large-Scale Fabrication of Ordered Silicon Nanotip Arrays Used for Gas Ionization in Ion Mobility Spectrometers

    Article • IEEE Transactions on Nanotechnology, January 2011, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  86. Surface Passivation of Black Silicon by Thermal ALD Deposited Aluminum Oxide

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

    Professor Ralf B Wehrspohn

  87. Conformal Transparent Conducting Oxides on Black Silicon

    Article • Advanced Materials, September 2010, Wiley

    Professor Ralf B Wehrspohn

  88. Gradient nanowires and nanotubes

    Article • physica status solidi (b), September 2010, Wiley

    Professor Ralf B Wehrspohn

  89. Template-controlled thermolysis of single-source-precursors

    Article • physica status solidi (b), September 2010, Wiley

    Professor Ralf B Wehrspohn

  90. Photonic Crystal Devices with Multiple Dyes by Consecutive Local Infiltration of Single Pores

    Article • Advanced Materials, August 2010, Wiley

    Professor Ralf B Wehrspohn

  91. 3D photonic crystals for photon management in solar cells

    Article • August 2010, SPIE

    Professor Ralf B Wehrspohn

  92. Templated self-assembly of block copolymers - Toward the rational design of plasmonic nanorods

    Article • physica status solidi (b), July 2010, Wiley

    Professor Ralf B Wehrspohn

  93. Reduced pore diameter fluctuations of macroporous silicon fabricated from neutron-transmutation-doped material

    Article • physica status solidi (RRL) - Rapid Research Letters, June 2010, Wiley

    Professor Ralf B Wehrspohn

  94. ChemInform Abstract: Silicon-Based Photonic Crystals

    Article • ChemInform, May 2010, Wiley

    Professor Ralf B Wehrspohn

  95. Thermal emission properties of 2D and 3D silicon photonic crystals

    Article • Photonics and Nanostructures - Fundamentals and Applications, May 2010, Elsevier

    Professor Ralf B Wehrspohn

  96. Direction-selective optical transmission of 3D fcc photonic crystals in the microwave regime

    Article • Photonics and Nanostructures - Fundamentals and Applications, May 2010, Elsevier

    Professor Ralf B Wehrspohn

  97. Optical characterization of 3D photonic structures for light trapping in crystalline silicon solar cells

    Article • April 2010, SPIE

    Professor Ralf B Wehrspohn

  98. Inverted-opal photonic crystals for ultra light-trapping in solar cells

    Article • April 2010, SPIE

    Professor Ralf B Wehrspohn

  99. Optical modeling of needle like silicon surfaces produced by an ICP-RIE process

    Article • April 2010, SPIE

    Professor Ralf B Wehrspohn

  100. Micromorph silicon tandem solar cells with fully integrated 3D photonic crystal intermediate reflectors

    Article • April 2010, SPIE

    Professor Ralf B Wehrspohn

  101. Strain dependence of second-harmonic generation in silicon

    Article • April 2010, SPIE

    Professor Ralf B Wehrspohn

  102. Fast transient temperature operating micromachined emitter for mid-infrared optical gas sensing systems: design, fabrication, characterization and optimization

    Article • Microsystem Technologies, February 2010, Springer Science + Business Media

    Professor Ralf B Wehrspohn

  103. Losses and group index dispersion in insulator-on-silicon-on-insulator ridge waveguides

    Article • Optics Express, February 2010, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  104. Spectrally-Selective Photonic Structures for PV Applications

    Article • Energies, January 2010, MDPI AG

    Professor Ralf B Wehrspohn

  105. Strain dependence of second-harmonic generation in silicon

    Article • Optics Letters, January 2010, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  106. Cellular interactions of biodegradable nanorod arrays prepared by nondestructive extraction from nanoporous alumina

    Article • Journal of Materials Chemistry, January 2010, Royal Society of Chemistry

    Professor Ralf B Wehrspohn, Dr Mar Fernandez-Gutierrez

  107. Tandem solar cells with integrated intermediate reflectors

    Article • SPIE Newsroom, January 2010, SPIE

    Professor Ralf B Wehrspohn

  108. Photonics of Intermediate Reflectors in Tandem Solar Cells

    Article • January 2010, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  109. Spectral properties of intermediate reflectors in micromorph tandem cells

    Article • Solar Energy Materials and Solar Cells, November 2009, Elsevier

    Professor Ralf B Wehrspohn

  110. Angular resolved effective optical properties of a Swiss cross metamaterial

    Article • Applied Physics Letters, September 2009, American Institute of Physics

    Professor Ralf B Wehrspohn

  111. Coupling Schemes for Low-Group Velocity Photonic Crystal Devices

    Article • Journal of Computational and Theoretical Nanoscience, September 2009, American Scientific Publishers

    Professor Ralf B Wehrspohn

  112. Infiltration of individual pores in macroporous silicon photonic crystals

    Article • August 2009, SPIE

    Professor Ralf B Wehrspohn

  113. Electric transport in 3D photonic crystal intermediate reflectors for micromorph thin-film tandem solar cells

    Article • August 2009, SPIE

    Professor Ralf B Wehrspohn

  114. Fast transient temperature operating micromachined emitter for mid-infrared for optical gas sensing systems

    Article • May 2009, SPIE

    Professor Ralf B Wehrspohn

  115. Intermediate reflectors for enhanced top cell performance in photovoltaic thin-film tandem cells

    Article • Optics Express, May 2009, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  116. Preface: phys. stat. sol. (a) 205/12

    Article • physica status solidi (a), December 2008, Wiley

    Professor Ralf B Wehrspohn

  117. 3D photonic crystal intermediate reflector for micromorph thin-film tandem solar cell

    Article • physica status solidi (a), December 2008, Wiley

    Professor Ralf B Wehrspohn

  118. Directional selectivity and ultra-light-trapping in solar cells

    Article • physica status solidi (a), November 2008, Wiley

    Professor Ralf B Wehrspohn

  119. Three-dimensional photonic crystals as intermediate filter for thin-film tandem solar cells

    Article • April 2008, SPIE

    Professor Ralf B Wehrspohn

  120. Thermal emission properties of 2D and 3D silicon photonic crystals

    Article • April 2008, SPIE

    Professor Ralf B Wehrspohn

  121. Directional selectivity and light-trapping in solar cells

    Article • April 2008, SPIE

    Professor Ralf B Wehrspohn

  122. 3D photonic crystals for ultra-light trapping in solar cells

    Article • April 2008, SPIE

    Professor Ralf B Wehrspohn

  123. Powered by Nanowires

    Article • ChemSusChem, March 2008, Wiley

    Professor Ralf B Wehrspohn

  124. Influence of defects in opal photonic crystals on the optical transmission imaged by near-field scanning optical microscopy

    Article • Journal of Materials Science Materials in Electronics, March 2008, Springer Science + Business Media

    Professor Ralf B Wehrspohn

  125. Nanophotonic Materials

    Article • February 2008, Wiley

    Professor Ralf B Wehrspohn

  126. Polymer Tubes with Longitudinal Composition Gradient by Face-to-Face Wetting †

    Article • Chemistry of Materials, February 2008, American Chemical Society (ACS)

    Professor Ralf B Wehrspohn

  127. Deep Trench Etching in Macroporous Silicon - Application to Photonic Crystal Gas Sensors

    Article • January 2008, The Electrochemical Society

    Professor Ralf B Wehrspohn

  128. Thermal emission properties of 2D and 3D silicon photonic crystals

    Article • January 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  129. Local infiltration of individual pores with dyes in 2D macroporous silicon photonic crystals

    Article • January 2008, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  130. Tuning of the Optical Properties in Photonic Crystals Made of Macroporous Silicon

    Article • Advances in Optical Technologies, January 2008, Hindawi Publishing Corporation

    Professor Ralf B Wehrspohn

  131. Nanophotonic Materials: Photonic Crystals, Plasmonics and Metamaterials

    Article • physica status solidi (a), November 2007, Wiley

    Professor Ralf B Wehrspohn

  132. Preface: phys. stat. sol. (a) 204/11

    Article • physica status solidi (a), November 2007, Wiley

    Professor Ralf B Wehrspohn

  133. Linear and non-linear optical experiments based on macroporous silicon photonic crystals

    Article • physica status solidi (a), November 2007, Wiley

    Professor Ralf B Wehrspohn

  134. Enhanced Magneto-Optics and Size Effects in Ferromagnetic Nanowire Arrays

    Article • Advanced Materials, September 2007, Wiley

    Professor Ralf B Wehrspohn

  135. Connection of Hippocampal Neurons by Magnetically Controlled Movement of Short Electrospun Polymer Fibers—A Route to Magnetic Micromanipulators

    Article • Advanced Materials, September 2007, Wiley

    Professor Ralf B Wehrspohn

  136. Diffractive and energy selective photonic crystals for thin-film tandem solar cells

    Article • September 2007, SPIE

    Professor Ralf B Wehrspohn

  137. Liquid crystal director fields in micropores of photonic crystals

    Article • Journal of Optics A Pure and Applied Optics, August 2007, Institute of Physics Publishing

    Professor Ralf B Wehrspohn

  138. Nondestructive Mechanical Release of Ordered Polymer Microfiber Arrays from Porous Templates

    Article • Small, June 2007, Wiley

    Professor Ralf B Wehrspohn

  139. Experimental verification of apparent negative refraction in low-epsilon material in the microwave regime

    Article • Journal of Applied Physics, April 2007, American Institute of Physics

    Professor Ralf B Wehrspohn

  140. Organic Tube/Rod Hybrid Nanofibers with Adjustable Segment Lengths by Bidirectional Template Wetting

    Article • Advanced Functional Materials, April 2007, Wiley

    Professor Ralf B Wehrspohn

  141. Lithium Niobate Ridge Waveguides Fabricated by Wet Etching

    Article • IEEE Photonics Technology Letters, March 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  142. All-Optical Signal Processing Devices with (Periodically Poled) Lithium Niobate Waveguides

    Article • March 2007, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  143. Silicon-based low-loss photonic crystal waveguides

    Article • February 2007, SPIE

    Professor Ralf B Wehrspohn

  144. Miniature infrared gas sensors using photonic crystals

    Article • February 2007, SPIE

    Professor Ralf B Wehrspohn

  145. Ordered Porous Nanostructures and Applications. Edited by Ralf B. Wehrspohn.

    Article • Angewandte Chemie International Edition, January 2007, Wiley

    Professor Ralf B Wehrspohn

  146. Ordered Porous Nanostructures and Applications. Herausgegeben von Ralf B. Wehrspohn.

    Article • Angewandte Chemie, January 2007, Wiley

    Professor Ralf B Wehrspohn

  147. Tree-like alumina nanopores generated in a non-steady-state anodization

    Article • Journal of Materials Chemistry, January 2007, Royal Society of Chemistry

    Professor Ralf B Wehrspohn

  148. 3D Photonic Crystals as Diffractive and Energy Selective Filter for Tandem Thin Film Solar Cells

    Article • MRS Proceedings, January 2007, Cambridge University Press

    Professor Ralf B Wehrspohn

  149. Rewritable photonic circuits

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

    Professor Ralf B Wehrspohn, Professor lorenzo pavesi, Dr Paolo Bettotti

  150. Phase and envelope characteristics of ultrashort pulses reflected from a two-dimensional silicon photonic crystal

    Article • Physical Review B, July 2006, American Physical Society (APS)

    Professor Ralf B Wehrspohn

  151. Deep trench etching in macroporous silicon

    Article • Applied Physics A, June 2006, Springer Science + Business Media

    Professor Ralf B Wehrspohn

  152. Characterization of defect removal in hydrogenated and deuterated amorphous silicon thin film transistors

    Article • Journal of Non-Crystalline Solids, June 2006, Elsevier

    Professor Ralf B Wehrspohn

  153. Application of Photonic Crystals for Gas Detection and Sensing

    Article • May 2006, Wiley

    Professor Ralf B Wehrspohn

  154. Electrochemically-Prepared 2D and 3D Photonic Crystals

    Article • May 2006, Wiley

    Professor Ralf B Wehrspohn

  155. Dispersive elements for spectrum splitting in solar cell applications

    Article • April 2006, SPIE

    Professor Ralf B Wehrspohn

  156. Surface-enhanced Raman spectroscopy employing monodisperse nickel nanowire arrays

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

    Professor Ralf B Wehrspohn

  157. Photonic Crystals: Principles and Applications

    Article • January 2006, Elsevier

    Professor Ralf B Wehrspohn

  158. Mechanisms for Defect Creation and Removal in Hydrogenated and Deuterated Amorphous Silicon Studied using Thin Film Transistors

    Article • MRS Proceedings, January 2006, Cambridge University Press

    Professor Ralf B Wehrspohn

  159. Plasma etching of proton-exchanged lithium niobate

    Article • Journal of Vacuum Science & Technology A Vacuum Surfaces and Films, January 2006, American Vacuum Society

    Professor Ralf B Wehrspohn

  160. Low Group Velocity Devices in Silicon Photonics

    Article • January 2006, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  161. Spatially periodic liquid crystal director field appearing in a photonic crystal template

    Article • Applied Physics Letters, December 2005, American Institute of Physics

    Professor Ralf B Wehrspohn

  162. Tunable defect mode in a three-dimensional photonic crystal

    Article • Applied Physics Letters, December 2005, American Institute of Physics

    Professor Ralf B Wehrspohn

  163. Near-field optics and control of photonic crystals

    Article • Photonics and Nanostructures - Fundamentals and Applications, December 2005, Elsevier

    Professor Ralf B Wehrspohn

  164. Influence of eigenmode characteristics on optical tuning of a two-dimensional silicon photonic crystal

    Article • Physical Review B, October 2005, American Physical Society (APS)

    Professor Ralf B Wehrspohn

  165. Quantum dot emitters in two-dimensional photonic crystals of macroporous silicon

    Article • Applied Physics Letters, October 2005, American Institute of Physics

    Professor Ralf B Wehrspohn

  166. Nonlinear femtosecond pulse tuning of 2-D photonic crystals

    Article • September 2005, SPIE

    Professor Ralf B Wehrspohn

  167. Absence of enhanced stability in fully deuterated amorphous silicon thin-film transistors

    Article • Journal of Applied Physics, September 2005, American Institute of Physics

    Professor Ralf B Wehrspohn

  168. Director fields of nematic liquid crystals in tunable photonic crystals

    Article • August 2005, SPIE

    Professor Ralf B Wehrspohn

  169. Surface enhanced Raman spectroscopy on monodisperse silver and nickel nanowires

    Article • August 2005, SPIE

    Professor Ralf B Wehrspohn

  170. Nonlinear optical tuning in a 2-D silicon photonic crystal

    Article • August 2005, SPIE

    Professor Ralf B Wehrspohn

  171. SOI planar photonic crystal fabrication: Etching through SiO2/Si/SiO2 layer systems using fluorocarbon plasmas

    Article • Microelectronic Engineering, July 2005, Elsevier

    Professor Ralf B Wehrspohn

  172. Photonic crystal gas sensors (Plenary Paper)

    Article • May 2005, SPIE

    Professor Ralf B Wehrspohn

  173. Mechanism of guided self-organization producing quasi-monodomain porous alumina

    Article • Electrochimica Acta, April 2005, Elsevier

    Professor Ralf B Wehrspohn

  174. Nanophotonics.By Paras?N. Prasad.

    Article • Small, March 2005, Wiley

    Professor Ralf B Wehrspohn

  175. Stability of fully deuterated amorphous silicon thin-film transistors

    Article • Applied Physics Letters, February 2005, American Institute of Physics

    Professor Ralf B Wehrspohn

  176. The SOI planar photonic crystal fabrication: patterning of Cr using Cl2/O2 plasma etching

    Article • Microelectronic Engineering, February 2005, Elsevier

    Professor Ralf B Wehrspohn

  177. In situ surface-enhanced Raman spectroscopy of monodisperse silver nanowire arrays

    Article • Journal of Applied Physics, January 2005, American Institute of Physics

    Professor Ralf B Wehrspohn

  178. Kinetic Processes?Crystal Growth, Diffusion, and Phase Transitions in Materials. By Kenneth A. Jackson.

    Article • ChemPhysChem, January 2005, Wiley

    Professor Ralf B Wehrspohn

  179. Self-Organized Macrostructures in Anodically Formed Mesoporous Silica

    Article • Electrochemical and Solid-State Letters, January 2005, The Electrochemical Society

    Professor Ralf B Wehrspohn

  180. Channel Activity of a Viral Transmembrane Peptide in Micro-BLMs:  Vpu 1 - 32 from HIV-1

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

    Professor Ralf B Wehrspohn

  181. Periodically arranged point defects in two-dimensional photonic crystals

    Article • Physical Review B, November 2004, American Physical Society (APS)

    Professor Ralf B Wehrspohn

  182. Nonlinear optical tuning of a two-dimensional silicon photonic crystal

    Article • Physical Review B, November 2004, American Physical Society (APS)

    Professor Ralf B Wehrspohn

  183. Large-Area Three-Dimensional Structuring by Electrochemical Etching and Lithography

    Article • Advanced Materials, October 2004, Wiley

    Professor Ralf B Wehrspohn

  184. High-contrast planar photonic crystals

    Article • October 2004, SPIE

    Professor Ralf B Wehrspohn

  185. Tuning 2D photonic crystals

    Article • October 2004, SPIE

    Professor Ralf B Wehrspohn

  186. Photonic crystal gas sensors

    Article • October 2004, SPIE

    Professor Ralf B Wehrspohn

  187. Probing transepithelial substrate permeation with sub-cellular lateral resolution.

    Article • September 2004, Elsevier

    Professor Ralf B Wehrspohn

  188. Anodization of nanoimprinted titanium: a comparison with formation of porous alumina

    Article • Electrochimica Acta, July 2004, Elsevier

    Professor Ralf B Wehrspohn

  189. Nanotubes by Template Wetting: A Modular Assembly System

    Article • ChemInform, June 2004, Wiley

    Professor Ralf B Wehrspohn

  190. Gold/Carbon Composite Tubes and Gold Nanowires by Impregnating Templates with Hydrogen Tetrachloroaurate/Acetone Solutions

    Article • Nano Letters, June 2004, American Chemical Society (ACS)

    Professor Ralf B Wehrspohn

  191. Study of the magnetic hysteresis in arrays of ferromagnetic Fe nanowires as a function of the template filling fraction

    Article • Journal of Magnetism and Magnetic Materials, May 2004, Elsevier

    Professor Ralf B Wehrspohn

  192. FMR characterization of hexagonal arrays of Ni nanowires

    Article • Journal of Magnetism and Magnetic Materials, May 2004, Elsevier

    Professor Ralf B Wehrspohn

  193. Periodically arranged point defects in a 2D photonic crystal: the photonic analogue to a doped semiconductor

    Article • March 2004, SPIE

    Professor Ralf B Wehrspohn

  194. Highly Directional Emission from Photonic Crystal Waveguides of Subwavelength Width

    Article • Physical Review Letters, March 2004, American Physical Society (APS)

    Professor Ralf B Wehrspohn

  195. Nanoröhrchen durch Templatbenetzung: ein Baukastensystem

    Article • Angewandte Chemie, March 2004, Wiley

    Professor Ralf B Wehrspohn

  196. Nanotubes by Template Wetting: A Modular Assembly System

    Article • Angewandte Chemie International Edition, March 2004, Wiley

    Professor Ralf B Wehrspohn

  197. In-situ optical characterisation of porous alumina

    Article • phys stat sol (a), March 2004, Wiley

    Professor Ralf B Wehrspohn

  198. In-situ optical characterisation of porous alumina

    Article • phys stat sol (a), March 2004, Wiley

    Professor Ralf B Wehrspohn

  199. Silicon-Based Photonic Crystals

    Article • February 2004, Springer Science + Business Media

    Professor Ralf B Wehrspohn

  200. Photonic Crystals

    Article • January 2004, Wiley

    Professor Ralf B Wehrspohn

  201. Near-field visualization of light confinement in a photonic crystal microresonator

    Article • Optics Letters, January 2004, Optical Society of America (OSA)

    Professor Ralf B Wehrspohn

  202. Two-Dimensional Photonic Crystal Waveguides

    Article • January 2004, Springer Science + Business Media

    Professor Ralf B Wehrspohn

  203. Absence of enhanced stability in deuterated amorphous silicon thin film transistors

    Article • MRS Proceedings, January 2004, Cambridge University Press

    Professor Ralf B Wehrspohn

  204. Modelling hysteresis of interacting nanowires arrays

    Article • Physica B Condensed Matter, January 2004, Elsevier

    Professor Ralf B Wehrspohn

  205. A Gossamer Veil— News from the Nanoworld

    Article • German Research, December 2003, Wiley

    Professor Ralf B Wehrspohn

  206. Silicon-based two-dimensional photonic crystal waveguides

    Article • Photonics and Nanostructures - Fundamentals and Applications, December 2003, Elsevier

    Professor Ralf B Wehrspohn

  207. Magneto-optical properties of nickel nanowire arrays

    Article • Applied Physics Letters, December 2003, American Institute of Physics

    Professor Ralf B Wehrspohn

  208. Nanotubes à la Carte: Wetting of Porous Templates

    Article • ChemPhysChem, November 2003, Wiley

    Professor Ralf B Wehrspohn

  209. Computation of optical properties of Si-based photonic crystals with varying pore diameters

    Article • physica status solidi (b), November 2003, Wiley

    Professor Ralf B Wehrspohn

  210. Two- and three-dimensional photonic crystals made of macroporous silicon and liquid crystals

    Article • Applied Physics Letters, October 2003, American Institute of Physics

    Professor Ralf B Wehrspohn

  211. Moiré Pattern Formation on Porous Alumina Arrays Using Nanoimprint Lithography

    Article • Advanced Materials, September 2003, Wiley

    Professor Ralf B Wehrspohn

  212. Ferroelectric Lead Zirconate Titanate and Barium Titanate Nanotubes

    Article • Integrated Ferroelectrics, September 2003, Taylor & Francis

    Professor Ralf B Wehrspohn

  213. Mesoscopic ferroelectric cell arrays prepared by imprint lithography

    Article • Applied Physics Letters, September 2003, American Institute of Physics

    Professor Ralf B Wehrspohn

  214. Diffraction properties of two-dimensional photonic crystals

    Article • Applied Physics Letters, July 2003, American Institute of Physics

    Professor Ralf B Wehrspohn

  215. Nanoshell tubes of ferroelectric lead zirconate titanate and barium titanate

    Article • Applied Physics Letters, July 2003, American Institute of Physics

    Professor Ralf B Wehrspohn

  216. Im Blickpunkt: Ein Hauch von Nichts

    Article • Forschung, July 2003, Wiley

    Professor Ralf B Wehrspohn

  217. A model system for photonic crystals: macroporous silicon

    Article • phys stat sol (a), June 2003, Wiley

    Professor Ralf B Wehrspohn

  218. Special issue on Photonic Crystals: Optical Materials for the 21st Century

    Article • phys stat sol (a), June 2003, Wiley

    Professor Ralf B Wehrspohn

  219. Special issue on “Photonic Crystals: Optical Materials for the 21st Century”

    Article • phys stat sol (a), June 2003, Wiley

    Professor Ralf B Wehrspohn

  220. Palladium Nanotubes with Tailored Wall Morphologies

    Article • Advanced Materials, May 2003, Wiley

    Professor Ralf B Wehrspohn

  221. Curvature-Directed Crystallization of Poly(vinylidene difluoride) in Nanotube Walls

    Article • Macromolecules, May 2003, American Chemical Society (ACS)

    Professor Ralf B Wehrspohn

  222. Kinetics of defect creation in amorphous silicon thin film transistors

    Article • Journal of Applied Physics, May 2003, American Institute of Physics

    Professor Ralf B Wehrspohn

  223. In situ investigation of porous anodic films of silica

    Article • phys stat sol (a), May 2003, Wiley

    Professor Ralf B Wehrspohn

  224. Monodisperse metal nanowire arrays on Si by integration of template synthesis with silicon technology

    Article • Journal of Materials Chemistry, March 2003, Royal Society of Chemistry

    Professor Ralf B Wehrspohn

  225. Hexagonally Arranged Monodisperse Silver Nanowires with Adjustable Diameter and High Aspect Ratio

    Article • Chemistry of Materials, February 2003, American Chemical Society (ACS)

    Professor Ralf B Wehrspohn

  226. Design of a New Taper for Light Coupling Between a Ridge Waveguide and a Photonic Crystal Waveguide

    Article • MRS Proceedings, January 2003, Cambridge University Press

    Professor Ralf B Wehrspohn

  227. Ferroelectric Lead Zirconate Titanate and Barium Titanate Nanoshell Tubes

    Article • MRS Proceedings, January 2003, Cambridge University Press

    Professor Ralf B Wehrspohn

  228. Perfect two-dimensional porous alumina photonic crystals with duplex oxide layers

    Article • Journal of Applied Physics, January 2003, American Institute of Physics

    Professor Ralf B Wehrspohn

  229. Interaction of Periodically Arranged Point Defects in a Two Dimensional Photonic Crystal -The Photonic Analogue to a Doped Semiconductor

    Article • MRS Proceedings, January 2003, Cambridge University Press

    Professor Ralf B Wehrspohn

  230. Fabrication of monodomain alumina pore arrays with an interpore distance smaller than the lattice constant of the imprint stamp

    Article • Journal of Vacuum Science & Technology B Microelectronics Processing and Phenomena, January 2003, American Vacuum Society

    Professor Ralf B Wehrspohn

  231. Angle- and spectrally-resolved Bragg scattering on two-dimensional silicon-based photonic crystals

    Article • January 2003, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  232. Monodisperse Diameter-Modulated Gold Microwires

    Article • Advanced Materials, November 2002, Wiley

    Professor Ralf B Wehrspohn

  233. Microscopic mechanisms for creation and removal of metastable dangling bonds in hydrogenated amorphous silicon

    Article • October 2002, American Physical Society (APS)

    Professor Ralf B Wehrspohn

  234. Ultrafast band-edge tuning of a two-dimensional silicon photonic crystal via free-carrier injection

    Article • October 2002, American Physical Society (APS)

    Professor Ralf B Wehrspohn

  235. Switching behavior of single nanowires inside dense nickel nanowire arrays

    Article • IEEE Transactions on Magnetics, September 2002, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  236. High density hexagonal nickel nanowire array

    Article • Journal of Magnetism and Magnetic Materials, August 2002, Elsevier

    Professor Ralf B Wehrspohn

  237. Silicon-based photonic crystal slabs: two concepts

    Article • IEEE Journal of Quantum Electronics, July 2002, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  238. Self-ordering Regimes of Porous Alumina:  The 10 Porosity Rule

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

    Professor Ralf B Wehrspohn

  239. Spin-Wave Quantization in Ferromagnetic Nickel Nanowires

    Article • Physical Review Letters, June 2002, American Physical Society (APS)

    Professor Ralf B Wehrspohn

  240. Polymer Nanotubes by Wetting of Ordered Porous Templates

    Article • Science, June 2002, American Association for the Advancement of Science

    Professor Ralf B Wehrspohn

  241. Amorphous-silicon thin-film transistors deposited by VHF-PECVD and hot-wire CVD

    Article • Journal of Non-Crystalline Solids, April 2002, Elsevier

    Professor Ralf B Wehrspohn

  242. Defect creation kinetics in amorphous silicon thin film transistors

    Article • Journal of Non-Crystalline Solids, April 2002, Elsevier

    Professor Ralf B Wehrspohn

  243. Nature of metastable and stable dangling bond defects in hydrogenated amorphous silicon

    Article • Journal of Non-Crystalline Solids, April 2002, Elsevier

    Professor Ralf B Wehrspohn

  244. Highly ordered monocrystalline silver nanowire arrays

    Article • Journal of Applied Physics, March 2002, American Institute of Physics

    Professor Ralf B Wehrspohn

  245. Dispersion relation of 3D photonic crystals based on macroporous silicon

    Article • MRS Proceedings, January 2002, Cambridge University Press

    Professor Ralf B Wehrspohn

  246. Investigations of Mesoscopic Ferroelectric Structures Prepared by Imprint Lithography

    Article • MRS Proceedings, January 2002, Cambridge University Press

    Professor Ralf B Wehrspohn

  247. Quantitative Analysis of the Morphology of Macropores on Low-Doped p-Si

    Article • Journal of The Electrochemical Society, January 2002, The Electrochemical Society

    Professor Ralf B Wehrspohn

  248. A model system for two-dimensional and three-dimensional photonic crystals: macroporous silicon

    Article • Journal of Optics A Pure and Applied Optics, October 2001, Institute of Physics Publishing

    Professor Ralf B Wehrspohn

  249. Hexagonally ordered 100 nm period nickel nanowire arrays

    Article • Applied Physics Letters, August 2001, American Institute of Physics

    Professor Ralf B Wehrspohn

  250. Electrochemically Prepared Pore Arrays for Photonic-Crystal Applications

    Article • MRS Bulletin, August 2001, Cambridge University Press

    Professor Ralf B Wehrspohn

  251. Optical characterisation of 2D macroporous silicon photonic crystals with bandgaps around 3.5 and 1.3 μm

    Article • Optical Materials, June 2001, Elsevier

    Professor Ralf B Wehrspohn

  252. Silicon-Based Photonic Crystals

    Article • Advanced Materials, March 2001, Wiley

    Professor Ralf B Wehrspohn

  253. Silicon-Based Photonic Crystals

    Article • Advanced Materials, March 2001, Wiley

    Professor Ralf B Wehrspohn

  254. Three-dimensional photonic crystals based on macroporous silicon with modulated pore diameter

    Article • Applied Physics Letters, February 2001, American Institute of Physics

    Professor Ralf B Wehrspohn

  255. Stability of plasma deposited thin film transistors — comparison of amorphous and microcrystalline silicon

    Article • Thin Solid Films, February 2001, Elsevier

    Professor Ralf B Wehrspohn

  256. Was taugt der Physikunterricht?/Läuft die Nanotechnik dem Menschen davon?/Praxis mangelhaft, Englisch sehr gut/Kinder und Karriere?/Evaluation der Blauen Liste abgeschlossen/Schneller Surfen in Europa/USA: US-Fusionsforschung muss Isolation beenden, Benac

    Article • Physik Journal, January 2001, Wiley

    Professor Ralf B Wehrspohn

  257. High Density Hexagonal Nickel Nanowire Arrays with 65 and 100 nm-PERIOD

    Article • MRS Proceedings, January 2001, Cambridge University Press

    Professor Ralf B Wehrspohn

  258. Photonic Crystals from Macroporous Silicon

    Article • January 2001, Springer Science + Business Media

    Professor Ralf B Wehrspohn

  259. Microscopy and spectroscopy on deep two dimensional photonic crystals with defects

    Article • January 2001, Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  260. Dangling-bond defect state creation in microcrystalline silicon thin-film transistors

    Article • Applied Physics Letters, July 2000, American Institute of Physics

    Professor Ralf B Wehrspohn

  261. Effect of amorphous silicon material properties on the stability of thin film transistors: evidence for a local defect creation model

    Article • Journal of Non-Crystalline Solids, May 2000, Elsevier

    Professor Ralf B Wehrspohn

  262. Magnetic Properties of 100 NM-Period Nickel Nanowire Arrays Obtained from Ordered Porous-Alumina Templates

    Article • MRS Proceedings, January 2000, Cambridge University Press

    Professor Ralf B Wehrspohn

  263. Electrochemical preparation of porous semiconductors: from phenomenology to understanding

    Article • Materials Science and Engineering B, January 2000, Elsevier

    Professor Ralf B Wehrspohn

  264. Relative importance of the Si–Si bond and Si–H bond for the stability of amorphous silicon thin film transistors

    Article • Journal of Applied Physics, January 2000, American Institute of Physics

    Professor Ralf B Wehrspohn

  265. Photoluminescence from hydrogenated amorphous silicon oxide thin films

    Article • Journal of Non-Crystalline Solids, September 1999, Elsevier

    Professor Ralf B Wehrspohn

  266. Urbach energy dependence of the stability in amorphous silicon thin-film transistors

    Article • Applied Physics Letters, May 1999, American Institute of Physics

    Professor Ralf B Wehrspohn

  267. Spatial versus quantum confinement in porous amorphous silicon nanostructures

    Article • The European Physical Journal B, March 1999, Springer Science + Business Media

    Professor Ralf B Wehrspohn

  268. Stability of Amorphous Silicon Thin Film Transistors

    Article • MRS Proceedings, January 1999, Cambridge University Press

    Professor Ralf B Wehrspohn

  269. Nano- and Macropore Formation in p-Type Silicon

    Article • Journal of The Electrochemical Society, January 1999, The Electrochemical Society

    Professor Ralf B Wehrspohn

  270. Visible photoluminescence and its mechanisms from a-SiOx:H films with different stoichiometry

    Article • Journal of Luminescence, December 1998, Elsevier

    Professor Ralf B Wehrspohn

  271. Photoluminescence quenching of porous silicon in organic solvents: evidence for dielectric effects

    Article • Journal of Luminescence, December 1998, Elsevier

    Professor Ralf B Wehrspohn

  272. Unification of the time and temperature dependence of dangling-bond-defect creation and removal in amorphous-silicon thin-film transistors

    Article • November 1998, American Physical Society (APS)

    Professor Ralf B Wehrspohn

  273. The origin of visible photoluminescence from silicon oxide thin films prepared by dual-plasma chemical vapor deposition

    Article • Journal of Applied Physics, May 1998, American Institute of Physics

    Professor Ralf B Wehrspohn

  274. Spatial and quantum confinement in crystalline and amorphous porous silicon

    Article • Journal of Non-Crystalline Solids, May 1998, Elsevier

    Professor Ralf B Wehrspohn

  275. Macropore Formation in Highly Resistive p-Type Crystalline Silicon

    Article • Journal of The Electrochemical Society, January 1998, The Electrochemical Society

    Professor Ralf B Wehrspohn

  276. Light Emitting Porous Silicon from Hydrogenated Amorphous Silicon

    Article • phys stat sol (a), January 1998, Wiley

    Professor Ralf B Wehrspohn

  277. Microstructure and photoluminescence of porous Si formed on n-type substrates in the dark

    Article • Thin Solid Films, April 1997, Elsevier

    Professor Ralf B Wehrspohn

  278. Electrochemistry and photoluminescence of porous amorphous silicon

    Article • Thin Solid Films, April 1997, Elsevier

    Professor Ralf B Wehrspohn

  279. In-situ photoluminescence studies of porous silicon in liquids

    Article • Thin Solid Films, April 1997, Elsevier

    Professor Ralf B Wehrspohn

  280. Conditions of Elaboration of Luminescent Porous Silicon from Hydrogenated Amorphous Silicon

    Article • Physical Review Letters, August 1996, American Physical Society (APS)

    Professor Ralf B Wehrspohn

  281. Porous Silicon from Hydrogenated Amorphous Silicon: Comparison with Crystalline Porous Silicon

    Article • MRS Proceedings, January 1996, Cambridge University Press

    Professor Ralf B Wehrspohn

  282. Applications of silicon-based photonic crystals

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  283. Macroporous Silicon Photonic Crystals

    Article • Springer Science + Business Media

    Professor Ralf B Wehrspohn

  284. High-Density Nickel Nanowire Arrays

    Article • Springer Science + Business Media

    Professor Ralf B Wehrspohn

  285. Linear and Non-linear Optical Experiments Based on Macroporous Silicon Photonic Crystals

    Article • Wiley

    Professor Ralf B Wehrspohn

  286. DNA-mediated assembly of gold nanoparticles influenced by cations

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  287. Optically induced perturbations of photonic crystals

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  288. Photonic crystals from macroporous silicon

    Article • Springer Science + Business Media

    Professor Ralf B Wehrspohn

  289. Spectroscopy of photonic crystals

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  290. Optical characterization of multi-component Au-colloid-DNA complexes

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  291. Nickel nanowire arrays based on imprint lithography

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  292. Switching behaviour of single nanowires inside dense nickel nanowire arrays

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  293. Microscopy and spectroscopy on deep two dimensional photonic crystals with defects

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn

  294. Photonic bandgap waveguide structures

    Article • Institute of Electrical & Electronics Engineers (IEEE)

    Professor Ralf B Wehrspohn