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Gate-Tunable Surface Processes on a Single-Nanowire Field-Effect Transistor

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Surface chemical processes occurring on a Pd-nanoparticle-decorated tin oxide (SnO2) nanowire configured as a field-effect transistor (FET) can be strongly influenced by the gate potential if a high dielectric constant material is used as the gate oxide. Dramatic changes in channel currents are produced as a consequence when the device is exposed to hydrogen while operated in its depletion region, providing an example of gate-potential directed surface chemistry.

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