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Resistance flicker noise of gas sensors gives a new opportunity to improve gas detection by enhancing selectivity and sensitivity of cheap and popular gas sensors. The improvement at low gas concentrations can be even increased further by UV light irradiating the gas sensing layers exhibiting photocatalytic effect (e.g., WO3 or TiO2 gas sensing layers). A new system has been developed recently to...
Flicker noise (1/f-like noise) is often used to assess the quality of various materials and devices. This phenomenon has been observed in different electrochemical devices or reactions (e.g., smart windows, pitting corrosion events). In our exploratory studies we consider how to measure and utilize 1/f noise for the quality assessment of supercapacitors. This task requires special attention because...
We present an investigation of shot noise in graphene-based Hall sensors, with the purpose of evaluating their detection limit and of developing strategies to improve their characteristics. We perform measurements on two devices, one with a defective contact that could however be used as a gate to control the carrier density in the device and the other with all contacts working. We discuss the results...
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