Nano Archive

Mechanical properties of ZnO nanowires

Desai, A. V. and Haque, M. A. (2007) Mechanical properties of ZnO nanowires. Sensors and Actuators A: Physical, 134 (1). 169 - 176.

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Official URL: http://www.sciencedirect.com/science/article/B6THG...

Abstract

One-dimensional solids like nanowires and nanotubes are potential materials for future nanoscale sensors and actuators. Due to their unique length scale, they exhibit superior mechanical properties and other length scale dependent phenomena. In this paper, we report experimental investigations on the mechanical properties of ZnO nanowires. We have designed a MEMS test-bed for mechanical characterization of nanowires. The MEMS device exploits the mechanics of post-buckling deformation of slender columns to achieve very high force and displacement resolution. The small size of the test-bed allows for in situ experimentation inside analytical chambers, such as SEM and TEM. We present microscale version of pick-and-place as a generic specimen preparation and manipulation technique for experimentation on individual nanostructures. We performed experiments on ZnO nanowires inside a scanning electron microscope (SEM) and estimated the Young's modulus to be about 21 GPa and the fracture strain to vary from 5% to 15%.

Item Type:Article
Additional Information:International Mechanical Engineering congress and Exposition 2005 - IMECE 2005, American Society of Mechanical Engineering International Mechanical Engineering Congress and Exposition
Uncontrolled Keywords:MEMS; ZnO; Nanowires; Size effects; Mechanical properties
Subjects:Analytical Science > Nanotechnology for sensing and actuating
Physical Science > Nano objects
Material Science > Nanostructured materials
ID Code:4793
Deposited By:SPI
Deposited On:07 May 2009 10:32
Last Modified:07 May 2009 10:32

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