Physical　and　electrical　properties　of　wurtzitic　ZnO　straight　nanowires　grown　via　a　vapor-solid　mechanism　were　investigated.　Raman　spectrum　shows　four　first-order　phonon　frequencies　and　a　second-order　Raman　frequency　of　the　ZnO　nanowires.　Electrical　and　photoconductive　performance　of　individual　ZnO　straight　nanowire　devices　was　studied.　The　results　indicate　that　the　nanowires　reported　here　are　n-type　semi-conductors　and　UV　light　sensitive,　and　a　desirable　candidate　for　fabricating　UV　light　nanosensors　and　other　applications.