nanowire

Semiconductor nanowires (NWs) are nowadays intensively studied due to their great potential for electronic and photonic devices [1]. Single NW resonant tunneling diodes [2], light emitting diodes [3], PH-detectors [4] and Humidity-detectors [5] have recently been demonstrated. The common utilization of NWs is the detection such as PH, protein, ions and Gas [6] etc. Even though the polymeric NW shows the sensitivity of chemical [7]. The high surface-to-volume ratio of nanowires results in a strong dependence of carrier concentration on charge transfer from the surface and changes in nanowire conductance. Silicon nanowires (SiNWs) are particularly appealing for sensing applications, since the Si oxide can effectively passivat