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Piezotronic strain sensor based on single bridged ZnO wires
Author(s) -
Yang Y.,
Qi J. J.,
Gu Y. S.,
Wang X. Q.,
Zhang Y.
Publication year - 2009
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.200903231
Subject(s) - materials science , strain (injury) , piezoelectricity , tensile strain , atomic force microscopy , ultimate tensile strength , optoelectronics , sensitivity (control systems) , detector , nanotechnology , composite material , electronic engineering , electrical engineering , medicine , engineering
We demonstrate a piezotronic strain sensor based on cyclic stretching–releasing of single ZnO wires, which was employed to detect movement frequencies of an atomic force microscope (AFM) tip. Our results show that the resistance of single ZnO wires decreases as the tensile strains in the wire increase, which is suggested to be attributed to both piezoelectric and piezoresistance effects. These fabricated devices were found to have a sufficiently high sensitivity (about 200%) and a fast response time to the tensile strains. It could open up new applications of manufacturing frequency detectors. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)