Single-Shot 3D Diffractive Imaging of Core-Shell Nanoparticles with Elemental Specificity
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.
Cite
@article{arxiv.1702.06600,
title = {Single-Shot 3D Diffractive Imaging of Core-Shell Nanoparticles with Elemental Specificity},
author = {Alan Pryor and Arjun Rana and Rui Xu and Jose A. Rodriguez and Yongsoo Yang and Marcus Gallagher-Jones and Huaidong Jiang and Jaehyun Park and Sunam Kim and Sangsoo Kim and Daewong Nam and Yu Yue and Jiadong Fan and Zhibin Sun and Bosheng Zhang and Dennis F. Gardner and Carlos Sato Baraldi Dias and Yasumasa Joti and Takaki Hatsui and Takashi Kameshima and Yuichi Inubushi and Kensuke Tono and Jim Yang Lee and Makina Yabashi and Changyong Song and Tetsuya Ishikawa and Henry C. Kapteyn and Margaret M. Murnane and Jianwei Miao},
journal= {arXiv preprint arXiv:1702.06600},
year = {2017}
}
Comments
14 pages, 4 figures