Basic characteristics of polycarbonate-based dual cantilever sensors for detecting VOC
We have developed and evaluated polycarbonate (PC)-based dual cantilever sensors as part of a low-cost sensor network system for monitoring VOCs (volatile organic compounds). The PC-based dual cantilever sensor consists of a PC cantilever and a PBD (polybutadiene)-coated PC cantilever with PVDF (pol...
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| Auteurs principaux: | , , |
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| Format: | article |
| Langue: | EN |
| Publié: |
The Japan Society of Mechanical Engineers
2014
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| Accès en ligne: | https://doaj.org/article/5f6a6b0e68f2442989d9fbba55a69ed5 |
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| Résumé: | We have developed and evaluated polycarbonate (PC)-based dual cantilever sensors as part of a low-cost sensor network system for monitoring VOCs (volatile organic compounds). The PC-based dual cantilever sensor consists of a PC cantilever and a PBD (polybutadiene)-coated PC cantilever with PVDF (polyvinylidene fluoride) piezoelectric films. We began by investigating the size and mode dependences of resonant frequencies and quality factors of PC cantilevers and PBD-coated PC cantilever as output signal of PVDF piezoelectric film. Next, we examined the change of resonance frequency in the presence of VOCs vapor by setting up a resonance sensor evaluation system equipped with a dilution flow system, temperature-controlled chamber, oscillation circuit, and frequency counter. The resonant frequency of both PC cantilever and PBD-coated PC cantilever shifted significantly downward depending VOCs. |
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