| abstract |
A method of fabricating a gas sensor with a conductive sensing element on a microhotplate (102) is provided, the method includes the steps of fabricating a microhotplate (102) on silicon, fabricating a nanostructured sensor on the microhotplate (102) by growing of conductive nanotubes (110) or nanowires with metal catalyst and functionalising the conductive nanotubes or nanowires, wherein step the nanotubes (110) or nanowires are functionalised with metal oxides selected from a group consisting and not limited to tin oxide (SnO2), tungsten oxide (WOx), tantalum pent-oxide (Ta2O5), aluminium oxide (Al2O3) copper oxide (CuO), iron oxide (Fe2O3), titanium oxide (TiO), Neodymium Oxide (Nd2O3) and zinc oxide (ZnO). |