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Plastic deformation of indium nanostructures

Lee, Gyuhyon and Kim, Ju-Young and Burek, Michael J. and Greer, Julia R. and Tsui, Ting Y. (2011) Plastic deformation of indium nanostructures. Materials Science and Engineering A, 528 (19-20). pp. 6112-6120. ISSN 0921-5093.

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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.

Item Type:Article
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Greer, Julia R.0000-0002-9675-1508
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.
Group:Kavli Nanoscience Institute
Funding AgencyGrant Number
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
Canada Foundation for Innovation (CFI)UNSPECIFIED
Office of the Naval Research (ONR)N000140910883
Subject Keywords:Yield strength; Size effect; Indium; Strain rate; Plasticity
Issue or Number:19-20
Record Number:CaltechAUTHORS:20110801-133052184
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Official Citation:Gyuhyon Lee, Ju-Young Kim, Michael J. Burek, Julia R. Greer, Ting Y. Tsui, Plastic deformation of indium nanostructures, Materials Science and Engineering: A, Volume 528, Issues 19-20, 25 July 2011, Pages 6112-6120, ISSN 0921-5093, DOI: 10.1016/j.msea.2011.04.065.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24615
Deposited By: Jason Perez
Deposited On:02 Aug 2011 22:12
Last Modified:03 Oct 2019 02:58

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