Paper Title:
Elastic Strain Energy of a Nanowire in Three-Point Bending Test with the Consideration of Surface Effects
  Abstract

Three-point bending tests of nanowires with Contact atomic force microscopy reveal that the Young’s modulus of a nanowire is size-dependent. The modulus changes with the diameter of a nanowire. This size dependency can be explained within the framework of classical continuum mechanics by including the effects of surface stress. In this study, an analytical solution has been derived for the elastic strain energy of a nanowire with both ends clamped and contacted by an AFM tip at its midpoint. Different from previous theoretical models, the present model can handle the case of large deflection, where the displacement of the nanowire is in the same order of the diameter. Based on the equivalence of elastic strain energy, the apparent Young’s modulus of a nanowire is expressed as a function of the elastic modulus of the bulk and that of the surface, and the dimensions of a nanowire.

  Info
Periodical
Advanced Materials Research (Volumes 268-270)
Edited by
Feng Xiong
Pages
67-71
DOI
10.4028/www.scientific.net/AMR.268-270.67
Citation
X. W. Zeng, J. Q. Deng, "Elastic Strain Energy of a Nanowire in Three-Point Bending Test with the Consideration of Surface Effects", Advanced Materials Research, Vols. 268-270, pp. 67-71, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Tatsuya Miyajima, Fukue Nagata, W. Kanematsu, Yoshiyuki Yokogawa, Mototsugu Sakai
927
Authors: Zhi Wang, Wen Wen Liu, Yun Hai Du
Chapter 1: Advanced Material Engineering and Nanotechnology
Abstract:The tensile elastic modulus, bend elastic modulus and tensile strength of the composite materials hose were determined by uniaxial tension...
3
Authors: Xu Shu Sun, Jian Lin Li, Shi Zhou, Jun Lei Bai
Chapter 14: Multi-Field Coupling Theory and its Applications
Abstract:According to the characteristics that permeability and elastic modulus vary with stress, the variation of elastic modulus of sandstone change...
2552
Authors: Jia Hong Zhang, Min Yang, Qing Quan Liu, Fang Gu, Min Li, Yi Xian Ge
Chapter 3: Measurements, Sensors and MEMS
Abstract:This paper presents a novel and effective characterization method for giant piezoresistive properties of silicon nanowires by using the...
881