Synthesis, Characterization, and Applications of ZnO Nanowires

Figure 20

Working principle and output measurement of the HONG. (a) Schematic diagram of the HONG structure without mechanical deformation, in which gold is used to form Schottky contacts with the ZnO nanowire arrays. (b) Demonstration of the output scaling-up when mechanical deformation is induced, where the “±” signs indicate the polarity of the local piezoelectric potential created in the nanowires. (c) Open circuit voltage measurement of the HONG. (d) Short circuit current measurement of the HONG. The measurement is performed at a strain of 0.1% and strain rate of 5% s⁻¹ with a deformation frequency of 0.33 Hz. The insets are the enlarged view of the boxed area for one cycle of deformation (reproduced with permission from [157] © 2010 American Chemical Society).

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