A comparative analysis of one-port Colpitt and two-port Pierce SAW oscillators for DMMP vapor sensing

Origin and role of elasticity in the enhanced DMMP detection by ZnO/SAW sensor

“…ZnO thin film coated SAW resonators are placed as frequency determining element in Colpitt oscillator configuration as described earlier [16]. For sensing vapors, a laboratory-assembled vapor generation and delivery system is developed [17,18].…”

Optimal selection of SAW sensors for E-Nose applications

“…SAW devices are fabricated by depositing a thin layer of suitable polymer on the SAW substrate [32,33]. Each of the 12 SAW sensors is coated with a different polymer and their behaviors on exposure to various target gases are different from each other [34].…”

“…See [31,34] for details about sensor design. Also, the responses to the inert air were also measured.…”

Fabrication of High Frequency Surface Acoustic Wave (SAW) Devices for Real Time Detection of Highly Toxic Chemical Vapors

“…Fig. 7(a) shows the SEM images of the mask and fabricated device of 70MHz and 500 MHz SAW It can be seen in Fig 8 that [37][38][39]. The devices were placed in the feedback loop of a two stage amplifier in order to be realized as sensor oscillators.…”