Modeling and simulation of a ZnO nanowire bridge and development of an electrical equivalent circuit in liquid

This paper presents the modeling and simulation of ZnO nanowire bridge and its application as a mass sensor. The resonant frequency shift due to added mass has been used as the sensing parameter. The finite element modeling (FEM) analysis results of the resonant frequency computation conform to the theoretical results within an error of 3%. An electrical equivalent circuit of the bridge structure has been proposed for the operation of the device in liquid. The simulated frequency response of the equivalent circuit matches the theoretical results.