Nano Archive

Mechanical-electrical triggers and sensors using piezoelectric micowires/nanowires

Zhou, Jun and Fei, Peng and Gao, Yifan and Gu, Yudong and Liu, Jin and Bao, Gang and Wang, Zhong Lin (2008) Mechanical-electrical triggers and sensors using piezoelectric micowires/nanowires. NANO LETTERS, 8 (9). pp. 2725-2730.

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We demonstrate a mechanical-electrical trigger using a ZnO piezoelectric fine-wire (PFW) (microwire, nanowire). Once subjected to mechanical impact, a bent PFW creates a voltage drop across its width, with the tensile and compressive surfaces showing positive and negative voltages, respectively. The voltage and current created by the piezoelectric effect could trigger an external electronic system, thus, the impact force/pressure can be detected. The response time of the trigger/sensor is similar to 10 ms. The piezoelectric potential across the PFW has a lifetime of similar to 100 s, which is long enough for effectively ``gating'' the transport current along the wire; thus a piezoelectric field effect transistor is possible based on the piezotronic effect.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nanoelectronics
Material Science > Nanostructured materials
ID Code:1203
Deposited By:Anuj Seth
Deposited On:16 Dec 2008 14:10
Last Modified:19 Jan 2009 12:04

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