The Clash of Mechanical and Electrical Size-Effects in ZnO Nanowires and a Double Power Law Approach to Elastic Strain Engineering of Piezoelectric and Piezotronic Devices

作者：Rinaldi Antonio^*; Araneo Rodolfo; Celozzi Salvatore; Pea Marialilia; Notargiacomo Andrea

来源：Advanced Materials, 2014, 26(34): 5976-+.

DOI：10.1002/adma.201401026

The piezoelectric performance of ultra-strength ZnO nanowires (NWs) depends on the subtle interplay between electrical and mechanical size-effects. "Size-dependent" modeling of compressed NWs illustrates why experimentally observed mechanical stiffening can indeed collide with electrical size-effects when the size shrinks, thereby lowering the actual piezoelectric function from bulk estimates. "Smaller" is not necessarily "better" in nanotechnology.

• 出版日期2014-9-10