Novel Shape Memory of Metal Nanowires through Lattice Reorientation - Discovery, Characterization, and Modeling

by Liang, Wuwei
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Liang, Wuwei Novel Shape Memory of Metal Nanowires through Lattice Reorientation - Discovery, Characterization, and Modeling
Liang, Wuwei - Novel Shape Memory of Metal Nanowires through Lattice Reorientation - Discovery, Characterization, and Modeling

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Description

As functional nano building blocks, nanowires are of
great technical importance because of their unique
structures, properties, and potential applications in
nanoscale electronic, photonic, biological, and
chemical devices. These applications require a
fundamental understanding of the structural
characteristics and thermomechanical properties of
nanowires.
This work focuses on the characterization of the
structure and mechanical behavior of metal nanowires.
A novel shape memory effect and pseudoelastic
behavior of metal nanowires are discovered in
molecular dynamics simulations. Specifically, upon
tensile loading and unloading, these wires can
recover elongations of up to 50%, well beyond the
recoverable strains of 5-8% typical for most bulk
shape memory alloys. This novel behavior arises from
a reversible lattice reorientation driven by the high
surface-stress-induced internal stresses at the
nanoscale. It exists over a wide range of temperature
and is associated with response times on the order of
nanoseconds, making the nanowires attractive
functional components for a new generation of
biosensors, transducers, and interconnects in
nano-electromechanical systems.

Contributors

Author:
Liang, Wuwei

Further information

Biography Artist:
Dr. Wuwei Liang is a research engineer at Southwest Research
Institute in San Antonio, Texas. His research interests include
structure and mechanical properties of nanomaterials, fracture,
fatigue and reliability.

Dr. Min Zhou is a professor in the Department of Mechanical
Engineering at Georgia Institute of Technology, Atlanta, GA.
Language:
Englisch
Number of Pages:
116
Media Type:
Taschenbuch
Publisher:
VDM Verlag Dr. Müller

Master Data

Product Type:
Paperback book
Release date:
01 July 2009
Package Dimensions:
0.22 x 0.15 x 0.007 m; 0.222 kg
GTIN:
09783639165173
DUIN:
5MUJ038L10H
£41.99
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