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Miniature thermal conductivity detector
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Miniature thermal conductivity detector
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
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6429401
© VOLKER STEGER/SCIENCE PHOTO LIBRARY
German Germany Horizontal Mechanical Micro Micromechanical Micromechanics Monitor Nanotechnology Sensor Siemens
EDITORS COMMENTS
This print showcases a remarkable feat of engineering: a miniature thermal conductivity detector designed by the renowned German technology company, Siemens. The image, captured using scanning electron microscopy and enhanced with vibrant colors, reveals intricate details of this cutting-edge device. At first glance, one is immediately drawn to the delicate gold wire that traverses the frame from upper left to lower right. Astonishingly, this wire is an astonishing 200 times thinner than a human hair! It serves as the key component responsible for measuring the thermal conductivity of gases. The ingenious design of this detector enables it to detect reactions between gases by monitoring changes in temperature and subsequent resistance variations within the wire. When such a reaction occurs, it triggers a signal indicating its presence. This breakthrough technology holds immense potential for various applications. Scientists envision incorporating these detectors into microreactors capable of producing small quantities of chemicals efficiently. By harnessing nanotechnology and micromechanics expertise, Siemens has paved the way for advancements in chemical synthesis on a microscopic scale. With its horizontal orientation and meticulous attention to detail, this photograph provides us with an awe-inspiring glimpse into the world of micromechanical sensors and their role in advancing scientific understanding. As we marvel at this extraordinary creation born out of German innovation, we are reminded once again that progress knows no bounds when science meets artistry.
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