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Title: Ultrafast Three-Dimensional Integrated Imaging of Strain in Core/Shell Semiconductor/Metal Nanostructures

Journal Article · · Nano Letters
ORCiD logo [1];  [2];  [1];  [3];  [1];  [1];  [4];  [2];  [1];  [1]; ORCiD logo [2];  [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Center for Nanoscale Materials
  3. European Synchrotron Radiation Facility (ESRF), Grenoble (France)
  4. 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
Citation Metrics:
Cited by: 14 works
Citation information provided by
Web of Science

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Cited By (5)

Three-dimensional X-ray diffraction imaging of dislocations in polycrystalline metals under tensile loading 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