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A new approach to gas sensing with nanotechnology
by Swati Sharma, and Marc Madou
Philosophical Transactions AVolume 370(1967):2448-2473
May 28, 2012
©2012 by The Royal Society
Three grains of a semiconductor oxide showing how the intergranular contact resistance comes about.
Swati Sharma, and Marc Madou Phil. Trans. R. Soc. A 2012;370:2448-2473
©2012 by The Royal Society
Schematic of a gas-sensing reaction in (a) the compact layer and (b) the porous layer.
Swati Sharma, and Marc Madou Phil. Trans. R. Soc. A 2012;370:2448-2473
©2012 by The Royal Society
Schematic models for grain-size effects (adapted from [23]).
Swati Sharma, and Marc Madou Phil. Trans. R. Soc. A 2012;370:2448-2473
©2012 by The Royal Society
Schematic of the ethanol-sensing mechanism of vanadium oxide sensors coated with SnO2, TiO2 and Fe2O3 [34].
Swati Sharma, and Marc Madou Phil. Trans. R. Soc. A 2012;370:2448-2473
©2012 by The Royal Society
Transmission electron micrograph of tin oxide nanopowder [20].
Swati Sharma, and Marc Madou Phil. Trans. R. Soc. A 2012;370:2448-2473
©2012 by The Royal Society
Basic outline of the CVD technique [35].
Swati Sharma, and Marc Madou Phil. Trans. R. Soc. A 2012;370:2448-2473
©2012 by The Royal Society
(a) A macro-cylindrical gas sensor with a metal wire as a heating element [45].
Swati Sharma, and Marc Madou Phil. Trans. R. Soc. A 2012;370:2448-2473
©2012 by The Royal Society
A planer gas sensor with Pt microheaters on a suspended silicon nitride structure [45].
Swati Sharma, and Marc Madou Phil. Trans. R. Soc. A 2012;370:2448-2473
©2012 by The Royal Society
(a) Heat fluxes of a micromachined gas sensor [11].
Swati Sharma, and Marc Madou Phil. Trans. R. Soc. A 2012;370:2448-2473
©2012 by The Royal Society
Effect of size reduction on materials and heaters of a gas sensor.
Swati Sharma, and Marc Madou Phil. Trans. R. Soc. A 2012;370:2448-2473
©2012 by The Royal Society
SEM images displaying the diameter (a) and length (b) of a single suspended CNW. (c) Low-magnification SEM image displaying the adhesion of CNW onto C-MEMS electrode walls.
Swati Sharma, and Marc Madou Phil. Trans. R. Soc. A 2012;370:2448-2473
©2012 by The Royal Society
