Single-shot 3D coherent diffractive imaging of core-shell nanoparticles with elemental specificity
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- Title
- Single-shot 3D coherent diffractive imaging of core-shell nanoparticles with elemental specificity
- Authors
- Pryor, ALan; Rana, A; Xu, Rui; Rodriguez, J; Yang, Y; Gallagher-Jones, M; Jiang, Huaidong; Kanhaiya, K.; Nathanson, M; PARK, JAEHYUN; Kim, Sunam; Kim, Sangsoo; NAM, DAEWOONG; Yue, Y; Fan, J; Sun, Z; Zhang, B; Gardner D; Sato, C; Dias, B.; Joti, Y; Hatsui, T; Kameshima, T; Inubushi, Y; Tono, K; Lee, I; Yabashi, Makina; SONG, CHANGYONG; Ishikawa, T; Kapteyn, H; Murnane, M; Heinz, H; Miao, Jianwei
- Date Issued
- 2018-05-29
- Publisher
- Nature Publishing Group
- Abstract
- We report 3D coherent diffractive imaging (CDI) of Au/Pd core-shell nanoparticles with 6.1 nm spatial resolution with elemental specificity. We measured single-shot diffraction patterns of the nanoparticles using intense x-ray free electron laser pulses. By exploiting the curvature of the Ewald sphere and the symmetry of the nanoparticle, we reconstructed the 3D electron density of 34 core-shell structures from these diffraction patterns. To extract 3D structural information beyond the diffraction signal, we implemented a super-resolution technique by taking advantage of CDI's quantitative reconstruction capabilities. We used high-resolution model fitting to determine the Au core size and the Pd shell thickness to be 65.0 +/- 1.0 nm and 4.0 +/- 0.5 nm, respectively. We also identified the 3D elemental distribution inside the nanoparticles with an accuracy of 3%. To further examine the model fitting procedure, we simulated noisy diffraction patterns from a Au/Pd core-shell model and a solid Au model and confirmed the validity of the method. We anticipate this super-resolution CDI method can be generally used for quantitative 3D imaging of symmetrical nanostructures with elemental specificity.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/93995
- DOI
- 10.1038/s41598-018-26182-1
- ISSN
- 2045-2322
- Article Type
- Article
- Citation
- Scientific Reports, vol. 8, no. 1, page. 8284, 2018-05-29
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