Ultrafast Three-Dimensional Integrated Imaging of Strain in Core/Shell Semiconductor/Metal Nanostructures
- Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source
- Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
- European Synchrotron Radiation Facility (ESRF), Grenoble (France)
- Argonne National Lab. (ANL), Argonne, IL (United States). Mathematics and Computer Science
Visualizing the dynamical response of material heterointerfaces is increasingly important for the design of hybrid materials and structures with tailored properties for use in functional devices. In situ characterization of nanoscale heterointerfaces such as metal-semiconductor interfaces, which exhibit a complex interplay between lattice strain, electric potential, and heat transport at subnanosecond time scales, is particularly challenging. Here in this work, we use a laser pump/X-ray probe form of Bragg coherent diffraction imaging (BCDI) to visualize in three-dimension the deformation of the core of a model core/shell semiconductor-metal (ZnO/Ni) nanorod following laser heating of the shell. We observe a rich interplay of radial, axial, and shear deformation modes acting at different time scales that are induced by the strain from the Ni shell. We construct experimentally informed models by directly importing the reconstructed crystal from the ultrafast experiment into a thermo-electromechanical continuum model. The model elucidates the origin of the deformation modes observed experimentally. Our integrated imaging approach represents an invaluable tool to probe strain dynamics across mixed interfaces under operando conditions.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-06CH11357; EP/D052939/1
- OSTI ID:
- 1426238
- Journal Information:
- Nano Letters, Vol. 17, Issue 12; ISSN 1530-6984
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Three-dimensional X-ray diffraction imaging of dislocations in polycrystalline metals under tensile loading
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journal | September 2018 |
Real-time coherent diffraction inversion using deep generative networks
|
journal | November 2018 |
Anisotropic nano-scale resolution in 3D Bragg coherent diffraction imaging
|
journal | November 2018 |
Anisotropic nano-scale resolution in 3D Bragg coherent diffraction imaging | text | January 2018 |
Real-time coherent diffraction inversion using deep generative networks | text | January 2018 |
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