Hoffmann, S and Utke, I and Moser, B and Michler, J and Christiansen, S. H. and Schmidt, V and Senz, S and Werner, P and Gösele, Ulrich and Ballif, C (2006) Measurement of the bending strength of vapor-liquid-solid grown silicon nanowires. NANO LETTERS, 6 (4). pp. 622-625.
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Official URL: http://dx.doi.org/10.1021/nl052223z
The fracture strength of silicon nanowires grown on a  silicon substrate by the vapor-liquid-solid process was measured. The nanowires, with diameters between 100 and 200 nm and a typical length of 2 mu m, were subjected to bending tests using an atomic force microscopy setup inside a scanning electron microscope. The average strength calculated from the maximum nanowire deflection before fracture was around 12 GPa, which is 6% of the Young's modulus of silicon along the nanowire direction. This value is close to the theoretical fracture strength, which indicates that surface or volume defects, if present, play only a minor role in fracture initiation.
|Subjects:||Engineering > Nanotechnology applications in mechanical engineering|
Material Science > Nanofabrication processes and tools
Physical Science > Nanoelectronics
Material Science > Nanostructured materials
|Deposited On:||26 Jan 2009 11:43|
|Last Modified:||03 Mar 2009 13:59|
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