Observation of plastic deformation in freestanding single crystal Au nanowires

Dongyun LEE, Manhong ZHAO, Xiaoding WEI, Xi CHEN, Seong C. JUN, James HONE, Erik G. HERBERT, Warren C. OLIVER, Jeffrey W. KYSAR*

*Corresponding author for this work

Research output: Journal PublicationsJournal Article (refereed)peer-review

8 Citations (Scopus)

Abstract

Freestanding single crystal nanowires of gold were fabricated from a single grain of pure gold leaf by standard lithographic techniques, with center section of 7 μm in length, 250 nm in width, and 100 nm in thickness. The ends remained anchored to a silicon substrate. The specimens were deflected via nanoindenter until plastic deformation was achieved. Nonlocalized and localized plastic deformations were observed. The resulting force-displacement curves were simulated using continuum single crystal plasticity. A set of material parameters which closely reproduce the experimental results suggests that the initial critical resolved shear stress was as high as 135 MPa. © 2006 American Institute of Physics.
Original languageEnglish
Article number111916
JournalApplied Physics Letters
Volume89
Issue number11
DOIs
Publication statusPublished - 11 Sept 2006
Externally publishedYes

Bibliographical note

Support from AFOSR FA5550-06-1-0214 and NSF CMS-0134226 and NSF CMS-0407743 is gratefully acknowledged. In addition, this work has used the shared experimental facilities that are supported primarily by the MRSEC Program of the National Science Foundation under Award No. DMR-0213574 and by the New York State Office of Science, Technology and Academic Research (NYSTAR).

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