Advanced Materials · 2003 · 672 citations · 26 references
Natural SciencesMaterials EngineeringMaterials ScienceNanomaterialsNanotechnologySensorsElectrical CharacterizationElectrical ConductivityElectrode MaterialsNanoelectronicsNanosensorsNanotubesConductivity In NanomaterialsElectrical Conductivity MeasurementsElectrical Conductivity Of NanotubesElectrical Resistance MeasurementInorganic NanotubesNanomaterial-based SensorsNanostructured Gas SensorsNanotube Characterization
Extremely sensitive, drift‐free, and robust hydrogen sensors based on titania nanotube arrays (see Figure) are reported. Very large changes in the electrical conductivity of the nanotubes upon exposure to hydrogen gas have been measured, over one order of magnitude greater than the previous record. Dependence of the electrical conductivity on both temperature and nanotube pore size is found.
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