Nanotech 2011

Monitoring volatiles and flammable gases without electronics

J.L. Martinez-Hurtado
University of Cambridge, UK

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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