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

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

Department of Chemical and Biomolecular Engineering

Research output: Contribution to conference › Paper › peer-review

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 language	English
Pages	14079-14083
Number of pages	5
Publication status	Published - 2005
Event	05AIChE: 2005 AIChE Annual Meeting and Fall Showcase - Cincinnati, OH, United States Duration: 2005 Oct 30 → 2005 Nov 4

Other

Other	05AIChE: 2005 AIChE Annual Meeting and Fall Showcase
Country	United States
City	Cincinnati, OH
Period	05/10/30 → 05/11/4

All Science Journal Classification (ASJC) codes

Engineering(all)

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title = "Palladium nanopartcle coated tobacco moasic virus sensing layer based surface acoustic wave hydrogen sensors",

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.",

author = "Krishnan Srinivasan and Stefan Cular and Bhethanabotla, {Venkat R.} and Lee, {Sang Yup} and Harris, {Michael T.} and Culver, {James N.}",

year = "2005",

language = "English",

pages = "14079--14083",

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Palladium nanopartcle coated tobacco moasic virus sensing layer based surface acoustic wave hydrogen sensors. / Srinivasan, Krishnan; Cular, Stefan; Bhethanabotla, Venkat R.; Lee, Sang Yup; Harris, Michael T.; Culver, James N.

2005. 14079-14083 Paper presented at 05AIChE: 2005 AIChE Annual Meeting and Fall Showcase, Cincinnati, OH, United States.

Research output: Contribution to conference › Paper › peer-review

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AU - Srinivasan, Krishnan

AU - Cular, Stefan

AU - Bhethanabotla, Venkat R.

AU - Lee, Sang Yup

AU - Harris, Michael T.

AU - Culver, James N.

PY - 2005

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AB - 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.

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