Ultraviolet sensing using a TiO 2 nanotube integrated high resolution planar microwave resonator device

nanotubes are assembled on the surface of the microwave resonator. Upon exposure to UV light, electron-hole pair generation, trapping and recombination in the nanotubes are exploited as a unique signature to quantify the UV light intensity. The change of dielectric properties of the nanotube membrane is monitored using the underlying active microwave resonator. The proposed concept enables the detection and monitoring of UV light at high resolution, with very small exposure power and integrated form factors.