Room-temperature self-powered ethanol sensor based on the piezo-surface coupling effect of heterostructured α-Fe2O3/ZnO nanowires

At room temperature, high sensitivity for detecting ethanol has been achieved from alpha-Fe2O3/ZnO nanowire piezo-nanogenerator as self-powered gas sensor. Such ethanol sensing can be ascribed to piezosurface coupling effect of the heterostructured nanocomposites. The results demonstrate a novel approach for room-temperature ethanol sensors and promote the development of self-powered sensing. (C) 2015 Elsevier B.V. All rights reserved.