Hydrogen gas sensing by metasurfaces composed of aluminum doped zinc oxide nanotubes

Optical Sensors and Sensing Congress (2020), paper SM3B.5(2020)

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Abstract
We demonstrate optical hydrogen sensing using metasurfaces based on aluminum-doped zinc oxide (AZO) nanotubes. The sensing system shows 2-13 nm of resonance wavelength shift upon exposure to hydrogen gas of concentration 0.7-4.0 % within 10 minutes.
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Key words
Gas Sensing Mechanisms,pH Sensing,Humidity Sensors,Sol-Gel-Based Nanosensors,Gas Sensors
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