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Most chemoresistive gas sensors are supported by an insulating substrate, not integrable into silicon IC platforms, and need very high temperature to reach operating performance, this implies energy consumption and a risk factor in the presence of flammable gases. Therefore, porous silicon substrates represent a good choice, thanks to its chemical and physical properties. In this work we designed...
Large lithium-ion battery systems rely on battery monitoring and management systems to ensure safe and efficient operation. Typically the battery current, the cell voltages, and the cell temperatures are monitored. This paper describes the use of gas sensors in large lithium-ion battery systems in addition to conventionally used means of battery monitoring. An undetected electrolyte leak in a cell...
The effects of bias current in the sensing layer of resistive Metal-Oxide (MOX) sensors toward gases have been investigated. The behavior of a WO3 thin film deposited by sputtering has been studied. In a first time, while the working temperature is kept constant, it has been found that tuning the polarization of the MOX layer induces changes on its sensitivity. Besides, the behavior of sensitivity...
A catalytic combustion type methane gas sensor with Pd-Pt/ γ-Al2O3 catalyst working on pulse voltage mode is investigated in this paper, after fabricated by micromachining and sol-gel process on a silicon substrate. In order to achieve low power consumption as well as high sensitivity, pulse voltage was applied to a bridge circuit consisted of the sensor, and the ratio of the gas sensitivity...
Thick film resistance and capacitance elements have recently come to be used in miniaturized and lightweight electronic instruments. The thick-film magnetic semiconductor (IMS), with a thickness of 80 ??m, is a sintered substance based on ferrite powder and a ruthenium compound. The TMS has both the ferromagnetic and the semiconducting properties of the ferrite and the ruthenium compound. The TMS...
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