Piezotronic Effect: An Emerging Mechanism for Sensing Applications

Sensors

Kory Jenkins²  Vu Nguyen²  Ren Zhu²  Rusen Yang¹ 

[1] Department of Mechanical Engineering, University of Minnesota—Twin Cities, 111 Church Street SE, Minneapolis, MN 55446, USA;

关键词: piezotronic;    strain sensor;    pressure sensor;    gas sensor;    biosensor;    chemical sensor;    photodetector;    temperature sensor;    zinc oxide;    nanowire;   

DOI  :  10.3390/s150922914

来源: mdpi

【 摘 要 】

Strain-induced polarization charges in a piezoelectric semiconductor effectively modulate the band structure near the interface and charge carrier transport. Fundamental investigation of the piezotronic effect has attracted broad interest, and various sensing applications have been demonstrated. This brief review discusses the fundamentals of the piezotronic effect, followed by a review highlighting important applications for strain sensors, pressure sensors, chemical sensors, photodetectors, humidity sensors and temperature sensors. Finally, the review offers some perspectives and outlook for this new field of multi-functional sensing enabled by the piezotronic effect.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.