Article
Single-shot 3D coherent diffractive imaging of core-shell nanoparticles with elemental specificity. Public Deposited
https://scholar.colorado.edu/concern/articles/vx021f68h
- 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.
- Creator
- Park, Jaehyun
- Kameshima, Takashi
- Nathanson, Michael
- Rodriguez, Jose A
- Yang, Yongsoo
- Murnane, Margaret M
- Inubushi, Yuichi
- Joti, Yasumasa
- Tono, Kensuke
- Nam, Daewoong
- Yue, Yu
- Jiang, Huaidong
- Gardner, Dennis F
- Ishikawa, Tetsuya
- Song, Changyong
- Rana, Arjun
- Miao, Jianwei
- Gallagher-Jones, Marcus
- Hatsui, Takaki
- Fan, Jiadong
- Kanhaiya, Krishan
- Lee, Jim Yang
- Pryor, Alan
- Zhang, Bosheng
- Heinz, Hendrik
- Sun, Zhibin
- Xu, Rui
- Kim, Sangsoo
- Yabashi, Makina
- Dias, Carlos Sato Baraldi
- Kim, Sunam
- Kapteyn, Henry C
- Date Issued
- 2018-05-29
- Academic Affiliation
- Journal Title
- Journal Issue/Number
- 1
- Journal Volume
- 8
- File Extent
- 8284-8284
- Last Modified
- 2019-12-05
- Identifier
- PubMed ID: 29844398
- Resource Type
- Rights Statement
- DOI
- ISSN
- 2045-2322
- Language
- License
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singleShot3DCoherentDiffractiveImagingOfCoreShellNanopar.pdf | 2019-12-05 | Public | Download |
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singleShot3DCoherentDiffractiveImagingOfCoreShellNanopar.pdf | 2019-12-05 | Public | Download |