Semiconducting one-dimensional (1D) oxide nanomaterials in the forms of nanorods, nanowires, nanofibers, and nanotubes have received great attention because of fundamental scientific interest in the nanomaterials and also due to their potential applications in a variety of functional devices Particularly, for the chemical sensor application, 1D nanomaterials of metal oxides usually show better performance compared with their thin-film or bulk counterparts because of their enhanced surface-to-volume ratio, which allows for very sensitive transduction of the gas/surface interaction into a change in electrical conductivity.
In NTFL, various kinds of nanomaterials such as nanofibers and nanowires are synthesized by electrospinning and vapor-phase growth techniques. Then their application to chemical gas sensors is investigated.