Quantitative Evidence of Crossover toward Partial Dislocation

Letter pubs.acs.org/NanoLett

Quantitative Evidence of Crossover toward Partial Dislocation Mediated Plasticity in Copper Single Crystalline Nanowires Yonghai Yue,† Pan Liu,† Qingsong Deng,† Evan Ma,*,‡ Ze Zhang,†,§ and Xiaodong Han*,† †

Institute of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing, China Department of Materials Science, Johns Hopkins University, Baltimore, Maryland 21218, United States § Department of Materials Science, State Key Lab of Si Materials, ZheJiang University, Hangzhou, Zhejiang, China ‡

S Supporting Information *

ABSTRACT: In situ tensile tests of Cu single crystalline nanowires in a high-resolution transmission electron microscope reveal a novel effect of sample dimensions on plasticity mechanisms. When the single crystalline nanowire size was reduced to