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Semiconductor gas sensors utilize porous polycrystalline resistors made of semiconducting oxides. The working principle involves the receptor function played by the surface of each oxide grain and the transducer function played by each grain boundary. In addition, the utility factor of the sensing body also takes part in determining the gas response. Therefore, the concepts of sensor design are determined...
Potentiometric devices combining NASICON (Na + conductor, Na 3 Zr 2 Si 2 PO 12 ) with a series of Li 2 CO 3 -CaCO 3 auxiliary phases were investigated for CO 2 sensing properties as well as hetero-junction structure involved. It was revealed that an addition of proper amount of CaCO 3 to Li 2 CO 3 ...
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