Miniature thermal conductivity detector

Miniature thermal conductivity detector

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Caption: Miniature thermal conductivity detector. Coloured scanning electron micrograph of a detector that can be used to measure thermal conductivity of gases. It contains a gold wire (upper left to lower right) that is 200 times thinner than a human hair. When a reaction occurs between gases the change in composition results in a change in the temperature and consequently resistance of the wire. This triggers a signal that the reaction has occurred. Such detectors will be incorporated into microreactors to produce small amounts of chemicals. This detector was designed by the German technology company Siemens. Magnification: x670 when printed at 10 centimetres wide.

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Keywords: coloured, german, germany, gold wire, horizontal, mechanical, micro, micromechanical, micromechanics, monitor, nano, nanotechnology, scanning electron micrograph, sem, sensor, siemens, technology, thermal conductivity detector

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