Converse Piezoelectric Effect Induced Transverse Deflection of a Free-Standing ZnO Microbelt
Type
ArticleKAUST Grant Number
DMS 0706436CMMI 0403671
Date
2009-07-08Permanent link to this record
http://hdl.handle.net/10754/597877
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We demonstrate the first electric field induced transverse deflection of a single-crystal, free-standing ZnO microbelt as a result of converse piezoelectric effect. For a microbelt growing along the c-axis, a shear stress in the a-c plane can be induced when an electric field E is applied along the a-axis of the wurtzite structure. As amplified by the large aspect ratio of the microbelt that grows along the c-axis, the strain localized near the root can be detected via the transverse deflection perpendicular to the ZnO microbelt. After an experimental approach was carefully designed and possible artifacts were ruled out, the experimentally observed degree of deflection of the microbelt agrees well with the theoretically expected result. The device demonstrated has potential applications as transverse actuators/sensors/switches and electric field induced mechanical deflectors. © 2009 American Chemical Society.Citation
Hu Y, Gao Y, Singamaneni S, Tsukruk VV, Wang ZL (2009) Converse Piezoelectric Effect Induced Transverse Deflection of a Free-Standing ZnO Microbelt. Nano Lett 9: 2661–2665. Available: http://dx.doi.org/10.1021/nl901102k.Sponsors
Research supported by DARPA (Army/AMCOM/REDSTONE AR, W31P4Q-08-1-0009), BES DOE (DE-FG02-07ER46394), Air Force Office (FA9550-08-1-0446), DARPA/ARO W911NF-08-1-0249, KAUST Global Research Partnership, World Premier International Research Center (WPI) Initiative on Materials Nanoarchitectonics, MEXT, Japan, and NSF (DMS 0706436, CMMI 0403671).Publisher
American Chemical Society (ACS)Journal
Nano LettersPubMed ID
19518084ae974a485f413a2113503eed53cd6c53
10.1021/nl901102k
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