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February 14th, 2005
A sensing device tailored for mass production of highly sensitive and stable nerve-gas detectors has been developed by a research group led by a mechanical engineer at The University of Texas at Austin.
The researchers, led by Dr. Li Shi, designed and tested a nanometer-thin crystal of tin oxide sandwiched between two electrodes. When a built-in micro-heater heated the super-thin device, the tin oxide reacted with exquisite sensitivity to gases.
Both the nano-sizing of the metal-oxide and the unique micro-heater element of the sensor gave the detector its high sensitivity, stability and low power consumption.
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