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- W2276378887 abstract "We have demonstrated probe-free and highly sensitive nanowire-based nanosensors for detecting biologicallyand chemically-charged molecules. The core of the device relies on the non-symmetrical Schottky contact under reverse bias. The Schottky–gated device(SGD) has a few merits in comparison to the conventional Ohmic contacted devices(OCD). First, it does not need a bio-probe to detect molecules; rather, it depends on the attraction of the charged molecules to the junction region. Second, as for the same type of nanowires, such as ZnO, the sensitivity of the SGD is much higher than that of OCD because a few molecules at the junction region can change the “gate” that effectively tunes the conductance. Third, owing to the nature of the charge and potential profile at the junction region, the SGD is likely to have some selectivity in detecting the positively-charged molecules versus the negatively-charged molecules. A low detection limit of 2 fg/ml has been demonstrated. The approach demonstrated here can serve as a guideline for designing more practical chemical and biochemical sensors." @default.
- W2276378887 created "2016-06-24" @default.
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- W2276378887 date "2010-01-01" @default.
- W2276378887 modified "2023-09-24" @default.
- W2276378887 title "Schottky Barrier Height Varied by the Thermal and the Charged Molecules Adsorption Effect" @default.
- W2276378887 doi "https://doi.org/10.1149/ma2010-02/2/117" @default.
- W2276378887 hasPublicationYear "2010" @default.
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