Piezoresistive SU-8 cantilever with Fe(III)porphyrin coating for CO sensing

Reddy, C. Vijaya Bhaskar ; Khaderbad, Mrunal A. ; Gandhi, Sahir ; Kandpal, Manoj ; Patil, Sheetal ; Chetty, K. Narasaiah ; Rajulu, K. Govinda ; Chary, P. C. K. ; Ravikanth, M. ; Rao, V. Ramgopal (2012) Piezoresistive SU-8 cantilever with Fe(III)porphyrin coating for CO sensing IEEE Transactions on Nanotechnology, 11 (4). pp. 701-706. ISSN 1536-125X

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Official URL: http://ieeexplore.ieee.org/document/6168274/

Related URL: http://dx.doi.org/10.1109/TNANO.2012.2190619

Abstract

Carbon monoxide detection is required for various healthcare, environmental, and engineering applications. In this paper, 5,10,15,20-tetra (4,5-dimethoxyphenyl)-21H,23-Hporphyrin iron(III) chloride (Fe(III)porphyrin) coated on a piezoresistive SU-8 microcantilever has been used as a CO sensor. Rapid detection of CO down to 2 ppm has been observed with aforementioned sensors. Cantilevers without Fe(III)porphyrin have not responded to CO exposure. Fe(III)porphyrin-coated cantilever selectivity toward CO has been analyzed by measuring the sensor response to various gases such as N2, CO2, O2, ethanolamine, N2O and moisture. The sensor has exhibited a fast response and recovery times and is fully recoverable after repeated exposures.

Item Type:Article
Source:Copyright of this article belongs to Institute of Electrical and Electronics Engineers.
Keywords:Polymers; Carbon; Sensitivity; Piezoresistance; Sensors; Gold
ID Code:104679
Deposited On:30 Nov 2017 12:17
Last Modified:30 Nov 2017 12:17

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