Plastic deformation of indium nanostructures
Abstract
Mechanical properties and morphology of cylindrical indium nanopillars, fabricated by electron beam lithography and electroplating, are characterized in uniaxial compression. Time-dependent deformation and influence of size on nanoscale indium mechanical properties were investigated. The results show two fundamentally different deformation mechanisms which govern plasticity in these indium nanostructures. We observed that the majority of indium nanopillars deform at engineering stresses near the bulk values (Type I), with a small fraction sustaining flow stresses approaching the theoretical limit for indium (Type II). The results also show the strain rate sensitivity and flow stresses in Type I indium nanopillars are similar to bulk indium with no apparent size effects.
Additional Information
© 2011 Elsevier B.V. Received 2 November 2010; Received in revised form 4 March 2011; Accepted 20 April 2011; Available online 28 April 2011. T.Y. Tsui thanks Canadian NSERC Discovery, NSERC Research Tools and Instruments, and the Canada Foundation for Innovation (CFI) for the support of this research. The authors gratefully acknowledges critical support and infrastructure provided for this work by the Kavli Nanoscience Institute at Caltech and WATLabs at the University of Waterloo. J.R. Greer gratefully acknowledges the financial support of Office of the Naval Research (ONR GRANT No: N000140910883). T.Y. Tsui thanks Professor Joost Vlassak for the useful discussions in dislocation dynamics and Colin Zamecnik for performing the bulk compression test.Additional details
- Eprint ID
- 24615
- DOI
- 10.1016/j.msea.2011.04.065
- Resolver ID
- CaltechAUTHORS:20110801-133052184
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada Foundation for Innovation (CFI)
- N000140910883
- Office of the Naval Research (ONR)
- Created
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2011-08-02Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Kavli Nanoscience Institute