Dielectrophoretic assembly of ZnO nanorods for gas sensing

Abstract

ZnO nanorods were prepared by hydrothermal growth in aqueous solution. Products were then deposited on coplanar and interdigitated gold electrodes using dielectrophoresis. It was observed that ZnO nanorods link together at both ends to bridge the gap. This effect was employed for the deposition and alignment of nanorods along each other to make connection between the two electrodes for CO gas sensing application. This paper describes an electrokinetic fabrication method for a gas sensor composed of ZnO nanorods using DEP.