DNA-templated photo-induced silver nanowires: Fabrication and use in detection of relative humidity Original Research Article

A very simple and novel approach of fabricating Ag–DNA network is herein reported. The Ag–DNA network can be formed from reduction of silver ion absorbed on DNA template by sunlight. Mesh size of the Ag–DNA network and the diameter of the Ag–DNA nanowire can be controlled by adjusting the concentration of DNA and irradiation time, respectively. Furthermore, the Ag–DNA network placed onto comb-like gold electrodes can be utilized as a sensor for humidity, which presents a good response to the detection of relative humidity (RH).