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- W2976500521 abstract "Different conduction mechanisms of surface functionalized porous silicon based nano structured sensing platform have been studied for detection of hypo and hyper glycemia at room temperature. Nano porous layers are grown on p-type silicon wafer by electrochemical etching process. Sensor surface is functionalized by physisorption of immobilized glucose oxidase. Current - voltage characteristics of the sensor show rectifying nature in presence and absence of glucose molecules. Initially, current values increase with increasing glucose concentrations upto 1 mM and then decrease with further increase in glucose concentration. Studies on conduction mechanisms reveal that at low applied field, hopping is the dominating conduction process, whereas, poole - frenkel and trap—assisted tunneling become dominant in comparatively higher applied field ranges. With increasing glucose concentration, carrier concentrations on the sensor surface increases but at the same time trap density decreases due to surface passivation. The overall effect of these two contradictory facts is reflected in current voltage characteristics. The sensor shows good response time and repetitive behaviour." @default.
- W2976500521 created "2019-10-03" @default.
- W2976500521 creator A5005444193 @default.
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- W2976500521 date "2019-10-17" @default.
- W2976500521 modified "2023-09-23" @default.
- W2976500521 title "Studies on conductivity of surface functionalized nano porous silicon for detection of hypo and hyper glycemia" @default.
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- W2976500521 doi "https://doi.org/10.1088/2053-1591/ab482c" @default.
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