TY - GEN
T1 - Effect of electromechanical coupling on the young's modulus of zinc oxide nanowires
AU - Desai, A. V.
AU - Haque, Md Amanul
PY - 2008/12/1
Y1 - 2008/12/1
N2 - The Young's modulus of zinc oxide nanowires was measured to be significantly lower than bulk zinc oxide, which cannot be explained within the framework of existing theories. We propose that the strong electromechanical coupling in piezoelectric materials, such as zinc oxide, influences the measured mechanical properties. The asymmetric wurtzite crystal structure and the ionic nature of the molecular bonding result in internal electric fields during straining of the zinc oxide nanowire, which in turn lead to reduction in the measured modulus. In case of flexural deformation, additional electromechanical coupling is present due to the flexoelectric effect.
AB - The Young's modulus of zinc oxide nanowires was measured to be significantly lower than bulk zinc oxide, which cannot be explained within the framework of existing theories. We propose that the strong electromechanical coupling in piezoelectric materials, such as zinc oxide, influences the measured mechanical properties. The asymmetric wurtzite crystal structure and the ionic nature of the molecular bonding result in internal electric fields during straining of the zinc oxide nanowire, which in turn lead to reduction in the measured modulus. In case of flexural deformation, additional electromechanical coupling is present due to the flexoelectric effect.
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U2 - 10.1115/DETC2008-49911
DO - 10.1115/DETC2008-49911
M3 - Conference contribution
AN - SCOPUS:81155123719
SN - 9780791843284
T3 - Proceedings of the ASME Design Engineering Technical Conference
SP - 553
EP - 559
BT - ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2008
T2 - ASME 2008 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE2008
Y2 - 3 August 2008 through 6 August 2008
ER -