Piezoelectric Size Effects in a Zinc Oxide Micropillar
نویسندگان
چکیده
منابع مشابه
Piezoelectric Size Effects in a Zinc Oxide Micropillar
In this work, the dependence of piezoelectric coefficients (PE) on the size of artificial fabricated ZnO micropillars on Si substrate is investigated. ZnO full film is grown with c-axis orientation and an average grain size of 20 nm at a substrate temperature of 500 °C by pulsed laser ablation. The micropillars with the size range of 1.5 to 7 μm are formed by top-down semiconductor device proce...
متن کاملGiant piezoelectric size effects in zinc oxide and gallium nitride nanowires. A first principles investigation.
Nanowires made of materials with noncentrosymmetric crystal structure are under investigation for their piezoelectric properties and suitability as building blocks for next-generation self-powered nanodevices. In this work, we investigate the size dependence of piezoelectric coefficients in nanowires of two such materials - zinc oxide and gallium nitride. Nanowires, oriented along their polar a...
متن کاملNanoarchitectures of semiconducting and piezoelectric zinc oxide
Semiconducting and piezoelectric zinc oxide has two important structure characteristics: the multiple and switchable growth directions: k0110l, k2110l, and k0001l; and the h0001j polar surfaces. The fast growth directions create nanobelts of different crystallographic facets, and the polar surfaces result in bending of the nanobelt for minimizing the spontaneous polarization energy. A combinati...
متن کاملOptical modes in oxide-apertured micropillar cavities.
We present a detailed experimental characterization of the spectral and spatial structure of the confined optical modes for oxide-apertured micropillar cavities, showing good-quality Hermite-Gaussian profiles, easily mode-matched to external fields. We further derive a relation between the frequency splitting of the transverse modes and the expected Purcell factor. Finally, we describe a techni...
متن کاملPiezoelectric nanogenerators based on zinc oxide nanowire arrays.
We have converted nanoscale mechanical energy into electrical energy by means of piezoelectric zinc oxide nanowire (NW) arrays. The aligned NWs are deflected with a conductive atomic force microscope tip in contact mode. The coupling of piezoelectric and semiconducting properties in zinc oxide creates a strain field and charge separation across the NW as a result of its bending. The rectifying ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Nanoscale Research Letters
سال: 2015
ISSN: 1931-7573,1556-276X
DOI: 10.1186/s11671-015-1081-2