Zn-Sb nanowires are prepared by heat treatment of Zn-Sb nanoparticles at 640 degrees C under an Ar atmosphere. The precursor. Zn-Sb nanoparticles, was obtained by electrodeposition. The length of the nanowires is more than 30 mu m and the typical diameter is about 90 nm (see figure). A spinodal decomposition liquid solid mechanism is proposed to explain the Zn-Sb nanowire growth.