Nano Science and Technology Institute
Nanotech 2011 Vol. 3
Nanotech 2011 Vol. 3
Nanotechnology 2011: Bio Sensors, Instruments, Medical, Environment and Energy
Chapter 7: Environment, Health & Safety

Monitoring volatiles and flammable gases without electronics

Authors:J.L. Martinez-Hurtado
Affilation:University of Cambridge, UK
Pages:549 - 552
Keywords:volatiles, sensor, flammable, gases, VOC
Abstract:A sensor that integrates the detection and transduction of the signal to a display is presented in this work. The device comprises a holographic grating embed in a polymer. The polymer is an elastomer that interacts with hydrocarbon gases and volatile organic compounds in a specific manner. As the polymer interacts with the molecules a conformational change alters the optical grating detected as a change in display wavelength or color. The changes can not only be accurately measured with a reflectometer for different concentrations or type of molecules, but also as changes in color easily detected with the naked eye.
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