Abstract

The theory developed earlier, predicts that TFPAS sensitivity exhibits a periodic character, the period being equal to one half of the longitudinal acoustical wavelength in the sorption film material, λ r. Sensitivity maxima occur at l r = (2 n − 1) λ r/4, where n is 1, 2, 3, … and l r is the sorption film thickness. Preliminary experiments showed that there was indeed a sharp increase in the sensitivity of TFPAS in the vicinity of λ/4 resonance. In this paper, λ/4 resonance is confirmed and the theory is further experimentally validated by observing another resonance at 3 λ/4. Potential applications of TFPAS operated at resonance frequencies for real-time detection and identification of chemical and biological weapons are discussed.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.