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Miniature thermal conductivity detector

Miniature thermal conductivity detector

T395/0178

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Credit

VOLKER STEGER / SCIENCE PHOTO LIBRARY VOLKER STEGER / SCIENCE PHOTO LIBRARY

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.

Release details

Model release not required. Property release not required.

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