CaltechAUTHORS
Published March 11, 2013 | Version public
Journal Article Metadata-only

Helium Implantation Effects on the Compressive Response of Cu Nanopillars

Creators

  • 1. ROR icon California Institute of Technology
  • 2. ROR icon Shanghai Jiao Tong University
  • 3. ROR icon University of California, Berkeley
  • 4. ROR icon Los Alamos National Laboratory

Abstract

A fabrication methodology for 120 nm-diameter, <111>-oriented single crystalline Cu nanopillars which are uniformly implanted with helium is described. Uniaxial compression experiments reveal that their yield strength is 30% higher than that of their unimplanted counterparts. This study sheds light on the fundamental understanding of the deformation mechanism of irradiated metallic nanocrystals, and has important implications for the interplay between irradiation-induced defects and the external sample dimensions in the nanoscale.

Additional Information

© 2012 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. Received: July 9, 2012. Revised: September 24, 2012. Article first published online: 12 Nov. 2012. The authors gratefully acknowledge the financial support of the US Department of Energy, Office of Basic Energy Sciences through JRG's Early Career grant. The authors also acknowledge the critical support and infrastructure provided for this work by the Kavli Nanoscience Institute at Caltech. Q. Guo would like to thank Andrew T. Jennings for providing the data for as-fabricated Cu pillars. Access to the ion implantation facility was partially supported by Center for Integrated Nanotechnologies (CINT), a DOE nanoscience center jointly operated by Los Alamos and Sandia National Laboratories.

Additional details

Identifiers

Eprint ID
35496
DOI
10.1002/smll.201201614
Resolver ID
CaltechAUTHORS:20121115-151311708

Related works

Describes
10.1002/smll.201201614 (DOI)

Funding

Department of Energy (DOE)
Kavli Nanoscience Institute
Center for Integrated Nanotechnologies (CINT)

Dates

Created
2012-11-15
Created from EPrint's datestamp field
Updated
2021-11-09
Created from EPrint's last_modified field

Caltech Custom Metadata

Caltech groups
Kavli Nanoscience Institute