Palladium nanopartcle coated tobacco moasic virus sensing layer based surface acoustic wave hydrogen sensors

Krishnan Srinivasan, Stefan Cular, Venkat R. Bhethanabotla, Sang Yup Lee, Michael T. Harris, James N. Culver

Research output: Contribution to conferencePaper

3 Citations (Scopus)

Abstract

We describe ongoing research aimed at investigating the role of engineered nanomaterials in designing SAW resonator based gas sensors. We investigated the use of Pd-cluster coated, engineered tobacco mosaic virus as sensing material for the development of hydrogen sensors using 315 MHz surface acoustic wave (SAW) two-port resonators. Absorption and desorption of hydrogen from the sensing layer causes the SAW devices to be perturbed. This perturbation results in variation of wave velocity and hence resonant frequency of the device that can be calibrated to determine the concentration of hydrogen. The sensor showed repeatable performance when tested over a range of concentration from (0.2-2.5%) hydrogen with low response times (30sec). High robustness and stability of film was observed when tested continuously over a range of concentrations and long durations. The sensor was seen to respond by producing a hydrogen concentration independent increase in frequency opposite to the more common mass loading behavior characterized by decreases in frequency.

Original languageEnglish
Pages14079-14083
Number of pages5
Publication statusPublished - 2005
Event05AIChE: 2005 AIChE Annual Meeting and Fall Showcase - Cincinnati, OH, United States
Duration: 2005 Oct 302005 Nov 4

Other

Other05AIChE: 2005 AIChE Annual Meeting and Fall Showcase
CountryUnited States
CityCincinnati, OH
Period05/10/3005/11/4

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Srinivasan, K., Cular, S., Bhethanabotla, V. R., Lee, S. Y., Harris, M. T., & Culver, J. N. (2005). Palladium nanopartcle coated tobacco moasic virus sensing layer based surface acoustic wave hydrogen sensors. 14079-14083. Paper presented at 05AIChE: 2005 AIChE Annual Meeting and Fall Showcase, Cincinnati, OH, United States.