Elastic modulus of single-crystal GaN nanowires

被引:33
作者
Ni, Hai
Li, Xiaodong [1 ]
Cheng, Guosheng
Klie, Robert
机构
[1] Univ S Carolina, Dept Mech Engn, Columbia, SC 29208 USA
[2] Yale Univ, Dept Elect Engn, New Haven, CT 06520 USA
[3] Yale Univ, Dept Appl Phys, New Haven, CT 06520 USA
[4] Brookhaven Natl Lab, Ctr Funct Nanomat, Upton, NY 11973 USA
关键词
D O I
10.1557/JMR.2006.0350
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The deformation behavior of single-crystal GaN nanowires was studied by directly performing three-point bending tests on each individual nanowire in an atomic force microscope. The elastic modulus calculated from the load-displacement response of the nanowires was 43.9 +/- 2.2 GPa. Single-crystal GaN nanowires investigated in this study were synthesized by chemical vapor deposition techniques based on the vapor-liquid-solid growth mechanism and had a diameter range from 60 to 110 nm. Crystalline GaN nanowires did not show obvious plastic deformation in bending and usually failed in a brittle manner.
引用
收藏
页码:2882 / 2887
页数:6
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