supported by the National Natural Science Foundation of China (No.50974062);the Basic and Frontier Technology Research Project of Henan Province (Nos.082300410320 and 122300410321);the Scientific Research Program of Department of Education of Henan Province (No.2008B520044)
In this paper, a 20 nm palladium-silver (Pd/Ag) ultrathin optical film is used for hydrogen gas sensing. The mole ratio of the two metals is controlled at Pd:Ag=3:1. In the direct current (DC) sputtering machine, the ...