Published April 13, 2011
| public
Journal Article
Influence of Homogeneous Interfaces on the Strength of 500 nm Diameter Cu Nanopillars
- Creators
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Jang, Dongchan
- Cai, Can
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Greer, Julia R.
Abstract
Interfaces play an important role in crystalline plasticity as they affect strength and often serve as obstacles to dislocation motion. Here we investigate effects of grain and nanotwin boundaries on uniaxial strength of 500 nm diameter Cu nanopillars fabricated by e-beam lithography and electroplating. Uniaxial compression experiments reveal that strength is lowered by introducing grain boundaries and significantly rises when twin boundaries are present. Weakening is likely due to the activation of grain-boundary-mediated processes, while impeding dislocation glide can be responsible for strengthening by twin boundaries.
Additional Information
© 2011 American Chemical Society. Published In Issue April 13, 2011; Article ASAP: March 09, 2011; Received: January 26, 2011; Revised: February 18, 2011. The authors gratefully acknowledge the financial support of the NSF-sponsored MRSEC Center at Caltech (DMR-0520565). The authors also gratefully acknowledge critical support and infrastructure provided for this work by the Kavli Nanoscience Institute at Caltech.Additional details
- Eprint ID
- 23501
- Resolver ID
- CaltechAUTHORS:20110429-104239248
- DMR-0520565
- NSF
- Created
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2011-04-29Created from EPrint's datestamp field
- Updated
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2021-11-09Created from EPrint's last_modified field
- Caltech groups
- Kavli Nanoscience Institute