5Keat Ghee Ong,Kefeng Zeng,Craig A Grimes.A wireless,passive carbon nanotube-based gas sensor[J].IEEE Sensors Journal,2002,2 (2):82~88.
6Buxton,Derbyshire.A three-colour quantitative schlieren system[J].Journal of Scientific Instruments,1968,2 (1):413~416.
7Radislav A Potyrailo,Andrew W Szumlas,Timothy L Danielson,et al.A dual-parameter optical sensor fabricated by gradient axial doping of an optical fibre[J].Meas.Sci.Technol.,2005,16:235 ~ 241.
8D Richter A,Fried,Wert B p,et al.Development of a tunable mid-IR difference frequency laser source for highly sensitive airborne trace gas detection[J].Appl.Phys.B.,2002,75:281~288.
9Jin W,Stewart G,Philp W,et al.Limitation of absorption-based fibre optic gas sensors by coherent reflections[J].Appl.Opt.,1997,36 (25):6 251~6255.
10Patrick Jacquinot,Beat Müller,Bernhard Wehrli,et al.Determination of methane and other small hydrocarbons with a platinum-Nafion electrode by stripping voltammetry[J].Analytica Chimica Acta,2001,432:1 ~ 10.