A delay-line-type surface acoustic wave (SAW) sensor based on a zinc oxide (ZnO) sensitive layer was developed. Two types of sensitive layers were obtained: ZnO nanowires and ZnO thin films, both deposited using laser methods (VLS-PLD and PLD, respectively) onto quartz substrates. The responses of sensors with two different nanowire lengths (300 and 600 nm) were compared with those of sensors w...

Two-terminal devices were fabricated using unintentionally doped Zinc Oxide (ZnO) nanowires (NW) grown via a chemical vapor deposition technique to study the influence of surface functionalization on their transport properties. Organic molecules with differing functional groups demonstrated contrasting effects on the charge transport of the nanowires depending on the polarity and orientation of...

An effective, low cost, simple, and mask-free pathway is demonstrated for achieving density control of the aligned ZnO nanowires grown for large-scale applications. By a slight variation of the thickness of the thermally evaporated gold catalyst film, a significant change in the density of aligned ZnO nanowires has been controlled. The growth processes of the nanowires on an Al(0.5)Ga(0.5)N sub...

ZnO nanowires (NWs) are emerging as key elements for new lasing, photovoltaic and sensing applications but elucidation of their fundamental electronic properties has been hampered by a dearth of characterization tools capable of probing single nanowires. Herein, ZnO NWs were synthesized in solution and integrated into a low energy photoelectron spectroscopy system, where quantitative optical me...

One-dimensional (1D) semiconductor nanostructures are promising building blocks for future nanoelectronic and nanophotonic devices. ZnO has proven to be a multifunctional and multistructural nanomaterial with promising properties. Here we report the growth of ZnO nanosquids which can be directly grown on planar oxidized Si substrates without using catalysts and templates. The formation of these...

This article provides an overview of the recent development of ZnO nanowires (NWs) for chemoresistive sensing. Working mechanisms of chemoresistive sensors are unified for gas, ultraviolet (UV) and bio sensor types: single nanowire and nanowire junction sensors are described, giving the overview for a simple sensor manufacture by multiple nanowire junctions. ZnO NW surface functionalization is ...

A critical part of thin-film composite solar cells is conduction through the transparent electrode. Currently the material of choice for the window electrode is indium tin oxide (ITO). The natural abundance of indium however is insufficient for highvolume production of solar cells. Moreover, good quality ITO is made by expensive vapor-deposition processes. We propose to develop nanostructured d...

In this work, the structural defects and thermal conductivity of CuO, ZnO, CuO/ZnO nanowires have been studied, using molecular dynamics simulation with COMB3 potential. The initial parameters atoms positions were taken from reports bulk materials tenorite wurtzite structures, respectively. Nanowires grown along c-axis, as observed experimentally. results confirm apparition in systems after a f...

This paper presents the synthesis of wafer scale 3D ZnO nanoarchitectures composed of an array of 1D nanowires (NWs) embedded in 2D nanowalls by the vapor−liquid−solid (VLS) method. The effects of oxygen concentration and growth temperature on the density of nanostructures were studied. The 3D ZnO nanostructures were synthesized on c-plane GaN-on-sapphire substrate utilizing high purity ZnO pow...

One-dimensional nanostructures have been intensively investigated due to their unique properties and widespread applications [1]. Semiconducting ZnO nanostructures, with a band gap of about 3.4 eV, have broad applications in energy harvesting and storage, catalysis, and optoelectronics [2]. To fully realize the potential of ZnO nanostructure it is important to understand the interfacial propert...