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Resistive sensors based on electrospun tin oxide nanofibers have been deposited onto micromachined silicon substrates to detect low nitrogen dioxide (NO2) concentrations in air. Solution precursors for the electrospinning were based on polyvinyl alcohol (PVA) and tin chloride dihydrate (SnCl2·2H2O). The sensors have been doped with gold and palladium in order to improve their sensing characteristics...
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