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Title: Deformation twinning of a silver nanocrystal under high pressure. Supplementary materials

Within a high-pressure environment, crystal deformation is controlled by complex processes such as dislocation motion, twinning, and phase transitions, which change materials’ microscopic morphology and alter their properties. Likewise, understanding a crystal’s response to external stress provides a unique opportunity for rational tailoring of its functionalities. It is very challenging to track the strain evolution and physical deformation from a single nanoscale crystal under high-pressure stress. Here, we report an in situ three-dimensional mapping of morphology and strain evolutions in a single-crystal silver nanocube within a high-pressure environment using the Bragg Coherent Diffractive Imaging (CDI) method. We also observed a continuous lattice distortion, followed by a deformation twining process at a constant pressure. The ability to visualize stress-introduced deformation of nanocrystals with high spatial resolution and prominent strain sensitivity provides an important route for interpreting and engineering novel properties of nanomaterials.
Authors:
 [1] ;  [2] ;  [3] ;  [3] ;  [4] ;  [4] ;  [5] ;  [6]
  1. Brookhaven National Lab. (BNL), Upton, NY (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States); Center for High Pressure Science and Technology Advanced Research, Shanghai (China)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
  5. Univ. College London, Bloomsbury (United Kingdom); Research Complex at Harwell, Didcot (United Kingdom)
  6. Center for High Pressure Science and Technology Advanced Research, Shanghai (China)
Publication Date:
OSTI Identifier:
1237176
Report Number(s):
BNL--108436-2015-JA
Journal ID: ISSN 1530-6984; R&D Project: LS001
Grant/Contract Number:
SC00112704
Type:
Accepted Manuscript
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 15; Journal Issue: 11; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Research Org:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE nanocrystal; deformation twinning; coherent diffraction imaging; X-ray imaging