A biomimetic acoustic sensor was fabricated with single crystal PMN-PT piezoelectric cantilever array that can mimic functional properties of mammalian cochlea. Basilar membrane of mammalian cochlea can separate frequency components of input sound source and Ion channel phenomenon of hair cells on basilar membrane can generate action potentials for stimulating a nerve site. The piezoelectric ca...

Strong radial confinement in semiconductor nanowires leads to modified electronic and phononic energy spectra. We analyze the current response to the interplay between quantum confinement effects of the electron and phonon systems in a gate-defined double quantum dot in a semiconductor nanowire. We show that current spectroscopy of inelastic transitions between the two quantum dots can be used ...

Gallium nitride (GaN), in contrast to other commonly used piezoceramics, is a semiconductor that exhibits piezoresistive in addition to piezoelectric effects. The large piezoresponse – combined piezoelectric and piezoresistive effects – of GaN points out possible applications of GaN-based material systems in resonant devices. While the static piezoresistive response of GaN is small [1], the tim...

Hydrogen exposure of III-V HEMTs has been shown to cause a threshold voltage shift, AVT. This is a serious reliability concern. This effect has been attributed to a H-induced piezoelectric effect. Formation of TiHX expands the Ti layer in the gate, causing mechanical stress in the underlying semiconductor. This induces piezoelectric charge in the heterostructure underneath the gate that shifts ...