All Stories

  1. SPRING, an effective and reliable framework for image reconstruction in single-particle Coherent Diffraction Imaging

    Article • npj Computational Materials, August 2025, Springer Science + Business Media

    Dr Kartik Ayyer

  2. Direct Observation of the Exciton-Polaron in Single CsPbBr3 Quantum Dots

    Article • ACS Nano, August 2025, American Chemical Society (ACS)

    Jayanath Koliyadu, Dr Kartik Ayyer

  3. Scalable 3D reconstruction for X-ray single particle imaging with online machine learning

    Article • Nature Communications, July 2025, Springer Science + Business Media

    Dr Kartik Ayyer

  4. Focusing of X-ray free-electron laser pulses using multilayer Laue lenses

    Article • Optics Express, July 2025, Optical Society of America (OSA)

    Dr Kartik Ayyer

  5. Femtosecond pulse pair distribution functions at MID at the European XFEL

    Article • Journal of Physics Conference Series, May 2025, Institute of Physics Publishing

    Dr Kartik Ayyer

  6. Interrogating the structural heterogeneity of millions of nanoparticles using X-ray Lasers

    Article • January 2025, ScienceOpen

    Dr Kartik Ayyer

  7. Resolving Nonequilibrium Shape Variations among Millions of Gold Nanoparticles

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

    Dr Benedikt J Daurer, Dr Kartik Ayyer

  8. Nanoscale x-ray imaging with high spectral sensitivity using fluorescence intensity correlations

    Article • Structural Dynamics, March 2024, American Institute of Physics

    Dr Kartik Ayyer

  9. Observation of a single protein by ultrafast X-ray diffraction

    Article • Light Science & Applications, January 2024, Springer Science + Business Media

    Dr Kartik Ayyer, Dr Benedikt J Daurer, Filipe RNC Maia

  10. New aerodynamic lens injector for single particle diffractive imaging

    Article • Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, January 2024, Elsevier

    Dr Kartik Ayyer, Professor Henry N Chapman

  11. Form factor determination of biological molecules with X-ray free electron laser small-angle scattering (XFEL-SAS)

    Article • Communications Biology, October 2023, Springer Science + Business Media

    Dr Kartik Ayyer

  12. Ab initio spatial phase retrieval via intensity triple correlations

    Article • Optics Express, July 2023, Optical Society of America (OSA)

    Dr Kartik Ayyer

  13. Inter-Bragg crystallographic phase retrieval from shape transforms, stacking faults and substitutional disorder

    Article • Ultramicroscopy, July 2023, Elsevier

    Dr Kartik Ayyer

  14. Time-Resolved Single-Particle X-ray Scattering Reveals Electron-Density Gradients As Coherent Plasmonic-Nanoparticle-Oscillation Source

    Article • Nano Letters, June 2023, American Chemical Society (ACS)

    Dr Kartik Ayyer

  15. Holographic Single-Particle Imaging for Weakly Scattering, Heterogeneous Nanoscale Objects

    Article • Physical Review Applied, May 2023, American Physical Society (APS)

    Dr Kartik Ayyer

  16. Imaging via Correlation of X-Ray Fluorescence Photons

    Article • Physical Review Letters, April 2023, American Physical Society (APS)

    Dr Kartik Ayyer

  17. Speckle contrast of interfering fluorescence X-rays

    Article • Journal of Synchrotron Radiation, January 2023, International Union of Crystallography

    Professor Henry N Chapman, Dr Kartik Ayyer

  18. Observation of a single protein by ultrafast X-ray diffraction

    Article • March 2022, Cold Spring Harbor Laboratory Press

    Dr Kartik Ayyer

  19. Unsupervised learning approaches to characterizing heterogeneous samples using X-ray single-particle imaging

    Article • IUCrJ, January 2022, International Union of Crystallography

    Jayanath Koliyadu, Dr Kartik Ayyer, Dr Benedikt J Daurer

  20. On the use of multilayer Laue lenses with X-ray free electron lasers

    Article • July 2021, SPIE

    Dr Kartik Ayyer

  21. Understanding conformational dynamics from macromolecular crystal diffuse scattering

    Article • February 2021, Cold Spring Harbor Laboratory Press

    Dr Kartik Ayyer

  22. An encryption–decryption framework to validating single-particle imaging

    Article • Scientific Reports, January 2021, Springer Science + Business Media

    Dr Kartik Ayyer

  23. 3D diffractive imaging of nanoparticle ensembles using an x-ray laser

    Article • Optica, December 2020, Optical Society of America (OSA)

    Jayanath Koliyadu, Professor Henry N Chapman, Dr Kartik Ayyer, Dr Benedikt J Daurer, Filipe RNC Maia

  24. Diffraction data from aerosolized Coliphage PR772 virus particles imaged with the Linac Coherent Light Source

    Article • Scientific Data, November 2020, Springer Science + Business Media

    Dr Kartik Ayyer, Filipe RNC Maia

  25. Segmented flow generator for serial crystallography at the European X-ray free electron laser

    Article • Nature Communications, September 2020, Springer Science + Business Media

    Dr Kartik Ayyer

  26. Photon statistics and signal to noise ratio for incoherent diffraction imaging

    Article • New Journal of Physics, August 2020, Institute of Physics Publishing

    Professor Henry N Chapman, Dr Kartik Ayyer

  27. Megahertz single-particle imaging at the European XFEL

    Article • Communications Physics, May 2020, Springer Science + Business Media

    Prof. Dr. Martin Trebbin, Professor Henry N Chapman, Dr Benedikt J Daurer, Filipe RNC Maia, Dr Kartik Ayyer

  28. Reference-enhanced x-ray single-particle imaging

    Article • Optica, May 2020, Optical Society of America (OSA)

    Dr Kartik Ayyer

  29. Low-signal limit of X-ray single particle diffractive imaging

    Article • Optics Express, December 2019, Optical Society of America (OSA)

    Professor Henry N Chapman, Dr Kartik Ayyer

  30. Ab initiophasing of the diffraction of crystals with translational disorder

    Article • Acta Crystallographica Section A Foundations and Advances, January 2019, International Union of Crystallography

    Dr Kartik Ayyer

  31. Analysis of Fibrous Assembly Orientations from XFEL Diffraction Data

    Article • November 2018, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Kartik Ayyer

  32. Megahertz serial crystallography

    Article • Nature Communications, October 2018, Springer Science + Business Media

    Dr Kartik Ayyer, Professor Bostjan Kobe, Prof. Dr. Martin Trebbin, Filipe RNC Maia

  33. Single-particle imaging without symmetry constraints at an X-ray free-electron laser

    Article • IUCrJ, September 2018, International Union of Crystallography

    Filipe RNC Maia, Dr Kartik Ayyer

  34. High-speed crystallography - How to deliver the sample?

    Article • IUCrJ, July 2018, International Union of Crystallography

    Max O Wiedorn, salah awel, Dr Kartik Ayyer

  35. Femtosecond X-ray coherent diffraction of aligned amyloid fibrils on low background graphene

    Article • Nature Communications, May 2018, Springer Science + Business Media

    Dr Kartik Ayyer

  36. Structure Determination by Continuous Diffraction from Imperfect Crystals

    Article • January 2018, Springer Science + Business Media

    Dr Kartik Ayyer

  37. Orientation and analysis of XFEL serial diffraction patterns from fibrous molecular assemblies

    Article • December 2017, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Kartik Ayyer

  38. Analysis of XFEL serial diffraction data from individual crystalline fibrils

    Article • IUCrJ, October 2017, International Union of Crystallography

    Dr Kartik Ayyer

  39. Incoherent Diffractive Imaging via Intensity Correlations of Hard X Rays

    Article • Physical Review Letters, July 2017, American Physical Society (APS)

    Dr Kartik Ayyer

  40. Continuous diffraction of molecules and disordered molecular crystals

    Article • Journal of Applied Crystallography, July 2017, International Union of Crystallography

    Professor Henry N Chapman, Dr Kartik Ayyer

  41. Coherent soft X-ray diffraction imaging of coliphage PR772 at the Linac coherent light source

    Article • Scientific Data, June 2017, Springer Science + Business Media

    Dr Benedikt J Daurer, Dr Kartik Ayyer, Filipe RNC Maia

  42. Identifying well-oriented diffraction patterns in XFEL datasets

    Article • November 2016, Institute of Electrical & Electronics Engineers (IEEE)

    Dr Kartik Ayyer

  43. Coherent diffraction of single Rice Dwarf virus particles using hard X-rays at the Linac Coherent Light Source

    Article • Scientific Data, August 2016, Nature

    Filipe RNC Maia, Dr Benedikt J Daurer, Dr Kartik Ayyer

  44. Dragonfly: an implementation of the expand–maximize–compress algorithm for single-particle imaging

    Article • Journal of Applied Crystallography, June 2016, International Union of Crystallography

    Dr Kartik Ayyer

  45. Macromolecular diffractive imaging using imperfect crystals

    Article • Nature, February 2016, Springer Science + Business Media

    Professor Henry N Chapman, Dr Kartik Ayyer

  46. Perspectives for imaging single protein molecules with the present design of the European XFEL

    Article • Structural Dynamics, April 2015, American Institute of Physics

    Dr Kartik Ayyer

  47. Determination of crystallographic intensities from sparse data

    Article • IUCrJ, January 2015, International Union of Crystallography

    Dr Kartik Ayyer

  48. Real-Space x-ray tomographic reconstruction of randomly oriented objects with sparse data frames

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

    Dr Kartik Ayyer

  49. Recovering structure from many low-information 2-D images of randomly-oriented samples

    Article • Journal of Physics Conference Series, March 2013, Institute of Physics Publishing

    Dr Kartik Ayyer

  50. Solving structure with sparse, randomly-oriented x-ray data

    Article • Optics Express, May 2012, Optical Society of America (OSA)

    Dr Kartik Ayyer