Keywords:Biosensor, silver nanorods, H2S, wettability, Silver nanorods, wettability
Hydrogen sulfide is one of the pollutant which has a smell of rotten egg. Sewages, industrial organic garbage and mines are main sources of this gas. It is a very threatening gas in the interest of human health as it quickly deadens the sense of smell and a victim may breathe increasing quantities without noticing until the appearance of severe symptoms. A particular contraction of this gas for long time exposure may cause death. On the other hand, this gas has vital role in physiology and medicine. It is produced in almost all organisms during their metabolism process. It is latest member in the family of gasotransmitter with CO and NO. Thus selective detection of H2S is essential and crucial in the field of gas sensor and biomarkers. Researchers have explored the field of sensing using resistive, colorimetric, calorimetric, and gas chromatography mass spectroscopy etc. Here we demonstrate a unique technique for H2S detection based on wetting properties of Ag nanorods (NRs) array, which is found to be quick and selective.