Year: 2017
Type: preprint
Abstract: We report 3D coherent diffractive imaging of Au/Pd core-shell nanoparticles with 6 nm resolution on 5-6 femtosecond timescales. We measured single-shot diffraction patterns of core-shell nanoparticles using very intense and short x-ray free electron laser pulses. By taking advantage of the curvature of the Ewald sphere and the symmetry of the nanoparticle, we reconstructed the 3D electron density of 34 core-shell structures from single-shot diffraction patterns. We determined the size of the Au core and the thickness of the Pd shell to be 65.0 +/- 1.0 nm and 4.0 +/- 0.5 nm, respectively, and identified the 3D elemental distribution inside the nanoparticles with an accuracy better than 2%. We anticipate this method can be used for quantitative 3D imaging of symmetrical nanostructures and virus particles.
Source: arXiv (Cornell University)
Authors: Pryor, Alan, Rana, Arjun, Xu, Rui, Rodriguez, Jose A., Yang, Yongsoo, Gallagher-Jones, Marcus, Jiang, Huaidong, Park, Jaehyun, Kim, Sunam, Kim, Sangsoo, Nam, Daewong, Yue, Yu, Fan, Jiadong, Sun, Zhibin, Zhang, Bosheng, Gardner, Dennis F., Dias, Carlos Sato Baraldi, Joti, Yasumasa, Hatsui, Takaki, Kameshima, Takashi, Inubushi, Yuichi, Tono, Kensuke, Lee, Jim Yang, Yabashi, Makina, Song, Changyong, Ishikawa, Tetsuya, Kapteyn, Henry C., Murnane, Margaret M., Miao, Jianwei
Institutions: California NanoSystems Institute, University of California, Los Angeles, ShanghaiTech University, SPring-8, Pohang Accelerator Laboratory, Pohang University of Science and Technology, National University of Singapore, Joint Institute for Laboratory Astrophysics, University of Colorado Boulder, Japan Synchrotron Radiation Research Institute
Language: English
Subfield: Radiation
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2953374050