title: Piezotronic Effect: An Emerging Mechanism for Sensing Applications.
abstract: 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.
authors.affiliation: Department of Mechanical Engineering, University of Minnesota-Twin Cities, 111 Church Street SE, Minneapolis, MN 55446, USA. jenk0131@umn.edu.
authors.forename: Kory
authors.initials: K
authors.lastname: Jenkins
authors.affiliation: Department of Mechanical Engineering, University of Minnesota-Twin Cities, 111 Church Street SE, Minneapolis, MN 55446, USA. nguy1993@umn.edu.
authors.forename: Vu
authors.initials: V
authors.lastname: Nguyen
authors.affiliation: Department of Mechanical Engineering, University of Minnesota-Twin Cities, 111 Church Street SE, Minneapolis, MN 55446, USA. zhuxx453@umn.edu.
authors.forename: Ren
authors.initials: R
authors.lastname: Zhu
authors.affiliation: Department of Mechanical Engineering, University of Minnesota-Twin Cities, 111 Church Street SE, Minneapolis, MN 55446, USA. yangr@umn.edu.
authors.forename: Rusen
authors.initials: R
authors.lastname: Yang
mesh_terms: D004581:Electronics; D004867:Equipment Design; D049329:Nanostructures; D036103:Nanotechnology; D011312:Pressure; D013696:Temperature; D015034:Zinc Oxide
chemical_list: D015034:Zinc Oxide
keywords: biosensor; chemical sensor; gas sensor; nanowire; photodetector; piezotronic; pressure sensor; strain sensor; temperature sensor; zinc oxide