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

Science
Allison YauAndrew Ulvestad

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. These results pave the way for understanding polycrystalline material response under external stimuli and, ideally, engineering particular functions.

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Citations

Nov 1, 2017·Physical Chemistry Chemical Physics : PCCP·Nguyen Xuan TruongMelissa A Denecke
Feb 12, 2019·Nature Communications·Ke YuanPaul Fenter
Mar 10, 2018·Nature Communications·Hao ShanJianbo Wu
Sep 7, 2018·Optics Express·Anders Filsøe PedersenHenning Friis Poulsen
Mar 2, 2019·Acta Crystallographica. Section A, Foundations and Advances·Xiaojing HuangYong S Chu
Jan 5, 2019·Physical Review Letters·Chan KimAnders Madsen
Jan 5, 2019·Physical Review Letters·Audun SkaugenJorge Viñals
Jun 19, 2020·Optics Express·Anders Filsøe PedersenHenning Friis Poulsen
May 20, 2017·Science·Robert Suter
Sep 19, 2018·Nature Communications·Mathew J CherukaraRichard L Sandberg
Jul 7, 2018·Journal of Synchrotron Radiation·Guangxu JuG Brian Stephenson
Nov 10, 2018·Scientific Reports·Mathew J CherukaraRoss J Harder
Mar 3, 2021·Journal of Synchrotron Radiation·Zhongzhu ZhuLiang Zhou
Mar 20, 2021·Nature Materials·Ruperto G MarianoMatthew W Kanan
Apr 2, 2021·ACS Nano·Rafael A VicentePablo S Fernández
May 1, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Florian MeneauAline Ribeiro Passos

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