Metal hydrides as low cost hydrogen sensors
Novel materials for the cost-efficient development of hydrogen sensors were examined in a research project of three years. As a result, a completely novel type of hydrogen sensor has been developed which uses metal hydrides as a medium for the detection of hydrogen.<br>
Magnesium-nickel alloys, which are deposited on glass substrates by means of radio frequency (RF) sputter processes, can have electrochrome (EC) as well as gasochrome (GC) characteristics in interaction with hydrogen (metal hydrides). The electric characteristics change when charged with hydrogen ? reduction of the electric resistance (EC) ? as well as the optic characteristics (GC) from a highly reflective, i.e. non-transmitting state into a transmitting, low reflective state.
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