Synthesis and characterization of carbon nanotubes hydrogen gas sensor

الملخص EN

Two types of carbon nanotu bes (M W C N Ts and SW C N Ts) films were u sed to fabricate hyd rogen gas sensors.C N Ts films were d eposited on porou s silicon su bstrate by the d ropcasting method.The two sensors showed high sensitivity to hyd rogen gas atdifferentconcentrations.Experimentalresu lts indicated thatthe SW C N Tshave abetterperformance thanM W C N Ts.The SW C N Tsgas sensorshows high sensitivity at150 oC with 29sec response time,whereas M W C N Ts gas sensor shows bestsensitivityat200 oC with24sec response time.