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Title: Bragg coherent diffractive imaging of single-grain defect dynamics in polycrystalline films

Abstract

Polycrystalline material properties depend on the distribution and interactions of their crystalline grains. In particular, grain boundaries and defects are crucial in determining their response to external stimuli. A long-standing challenge is thus to observe individual grains, defects, and strain dynamics inside functional materials. Here we report a technique capable of revealing grain heterogeneity, including strain fields and individual dislocations, that can be used under operando conditions in reactive environments: grain Bragg coherent diffractive imaging (gBCDI). Using a polycrystalline gold thin film subjected to heating, we show how gBCDI resolves grain boundary and dislocation dynamics in individual grains in three-dimensional detail with 10-nanometer spatial and subangstrom displacement field resolution. Finally, these results pave the way for understanding polycrystalline material response under external stimuli and, ideally, engineering particular functions.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1];  [2]; ORCiD logo [2]
  1. Stanford Univ., Stanford, CA (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22), Materials Sciences and Engineering Division; Midwest Integrated Center for Computational Materials (MICCoM); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1459233
Alternate Identifier(s):
OSTI ID: 1374598
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Published Article
Journal Name:
Science
Additional Journal Information:
Journal Volume: 356; Journal Issue: 6339; Journal ID: ISSN 0036-8075
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Yau, Allison, Cha, Wonsuk, Kanan, Matthew W., Stephenson, G. Brian, and Ulvestad, Andrew. Bragg coherent diffractive imaging of single-grain defect dynamics in polycrystalline films. United States: N. p., 2017. Web. doi:10.1126/science.aam6168.
Yau, Allison, Cha, Wonsuk, Kanan, Matthew W., Stephenson, G. Brian, & Ulvestad, Andrew. Bragg coherent diffractive imaging of single-grain defect dynamics in polycrystalline films. United States. doi:10.1126/science.aam6168.
Yau, Allison, Cha, Wonsuk, Kanan, Matthew W., Stephenson, G. Brian, and Ulvestad, Andrew. Fri . "Bragg coherent diffractive imaging of single-grain defect dynamics in polycrystalline films". United States. doi:10.1126/science.aam6168.
@article{osti_1459233,
title = {Bragg coherent diffractive imaging of single-grain defect dynamics in polycrystalline films},
author = {Yau, Allison and Cha, Wonsuk and Kanan, Matthew W. and Stephenson, G. Brian and Ulvestad, Andrew},
abstractNote = {Polycrystalline material properties depend on the distribution and interactions of their crystalline grains. In particular, grain boundaries and defects are crucial in determining their response to external stimuli. A long-standing challenge is thus to observe individual grains, defects, and strain dynamics inside functional materials. Here we report a technique capable of revealing grain heterogeneity, including strain fields and individual dislocations, that can be used under operando conditions in reactive environments: grain Bragg coherent diffractive imaging (gBCDI). Using a polycrystalline gold thin film subjected to heating, we show how gBCDI resolves grain boundary and dislocation dynamics in individual grains in three-dimensional detail with 10-nanometer spatial and subangstrom displacement field resolution. Finally, these results pave the way for understanding polycrystalline material response under external stimuli and, ideally, engineering particular functions.},
doi = {10.1126/science.aam6168},
journal = {Science},
number = 6339,
volume = 356,
place = {United States},
year = {Fri May 19 00:00:00 EDT 2017},
month = {Fri May 19 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1126/science.aam6168

Citation Metrics:
Cited by: 15 works
Citation information provided by
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