BCB film based SAW humidity sensor

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BCB film based SAW humidity sensor

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Novel benzocyclobutene (BCB) film based surface acoustic wave (SAW) humidity sensors were successfully designed and fabricated. A sensitivity of 0.26 dB/RH% was successfully demonstrated between 8.6 and 90.6% relative humidity (RH), with a linear relationship between RH level and resonance amplitude. The temperature stability of resonance frequency and amplitude has also been studied.

Inspec keywords: surface acoustic wave sensors; humidity sensors

Other keywords: resonance amplitude; benzocyclobutene film; BCB film based SAW humidity sensor; surface acoustic wave humidity sensor; temperature stability; RH level; relative humidity; resonance frequency

Subjects: Sensing and detecting devices; Acoustic wave devices; Acoustical measurements and instrumentation; Sensing devices and transducers

References

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      • Dow Chemical Company: ‘Processing Procedures For CYCLOTENE 4000 Series Resin (DS3000 Immersion Develop Process)’, Feb. 2005, pp. 1–9.
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      • Saldanha, N., Puccio, D., Malocha, D.C.: `Experimental measurements and modeling of aluminum reflection gratings on YZ LiNbO3 for OFC SAW sensors', 2006 IEEE Int. Frequency Control Symp. and Exposition, Miami, FL, USA, p. 368–373.
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      • Wang, C.H., Liu, Y., Desmulliez, M., Richardson, A.: `Integrated sensors for health monitoring in advanced electronic systems', Proc. 4th Int. Design and Test Workshop 2009, (IDT 2009), Riyadh, Saudi Arabia, p. 1–6.
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