Helium implantation effects on the compressive response of Cu nanopillars

Qiang Guo; Peri Landau; Peter Hosemann; Yongqiang Wang; Julia R. Greer

doi:10.1002/smll.201201614

Helium implantation effects on the compressive response of Cu nanopillars

Qiang Guo, Peri Landau, Peter Hosemann, Yongqiang Wang, Julia R. Greer

Research output: Contribution to journal › Article › peer-review

54 Scopus citations

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.

Original language	English
Pages (from-to)	691-696
Number of pages	6
Journal	Small
Volume	9
Issue number	5
DOIs	https://doi.org/10.1002/smll.201201614
State	Published - 11 Mar 2013
Externally published	Yes

Keywords

compression tests
Cu nanopillars
helium
metal nanoparticles
nanomechanical properties

ASJC Scopus subject areas

Biotechnology
General Chemistry
Biomaterials
General Materials Science
Engineering (miscellaneous)

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10.1002/smll.201201614

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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.",

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AU - Guo, Qiang

AU - Landau, Peri

AU - Hosemann, Peter

AU - Wang, Yongqiang

AU - Greer, Julia R.

PY - 2013/3/11

Y1 - 2013/3/11

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AB - 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.

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KW - metal nanoparticles

KW - nanomechanical properties

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Helium implantation effects on the compressive response of Cu nanopillars

Abstract

Keywords

ASJC Scopus subject areas

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