Journal
APPLIED PHYSICS LETTERS
Volume 104, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4868133
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Funding
- MOST of China [2012CB932702, 2012CB932701]
- NSF of China [11374022, 61371001, 11304003, 61321001]
- Foundation for the Author of National Excellent Doctoral Dissertation of China [201241]
- Specialized Research Fund for the Doctoral Program of Higher Education of China [20130001110030]
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Mechanical properties of individual InAs nanowires (NWs) synthesized by metal organic chemical vapor deposition (MOCVD) and molecular beam epitaxy (MBE) methods are studied by in-situ tensile tests in a scanning electron microscope and their fracture strength and Young's modulus are obtained. The two types of NWs both exhibit brittle fracture with a maximum elastic strain up to similar to 10%. Their fracture strength distributes in a similar range of similar to 2-5GPa with a general trend of increasing with NW volume decrease, which is well described by Weibull statistic with a smaller Weibull modulus and a higher characteristic strength for MOCVD NWs. Young's modulus is determined to be 16-78GPa with an average value of 45 GPa and no dependence on NW diameter for MOCVD NWs and 34-79GPa with an average value of 58GPa for MBE NWs. (C) 2014 AIP Publishing LLC.
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