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The 4S and 2R conditions are considered to be requirements of gas sensor properties. 4S means sensitivity, selectivity, stability, and speed 2R means reversibiUty and repeatability. To realize the above conditions, we try to prepare devices according to optimal device design, fabrication process, and operational conditions. The sensing properties of metal oxide and SAW-type devices will now be described in brief. [Pg.479]

See other pages where Requirements of Gas Sensors is mentioned: [Pg.1] [Pg.28] [Pg.29] [Pg.29]