All-Optical Graphene Oxide Humidity Sensors
AbstractThe optical characteristics of graphene oxide (GO) were explored to design and fabricate a GO-based optical humidity sensor. GO film was coated onto a SU8 polymer channel waveguide using the drop-casting technique. The proposed sensor shows a high TE-mode absorption at 1550 nm. Due to the dependence of the dielectric properties of the GO film on water content, this high TE-mode absorption decreases when the ambient relative humidity increases. The proposed sensor shows a rapid response (<1 s) to periodically interrupted humid air flow. The transmission of the proposed sensor shows a linear response of 0.553 dB/% RH in the range of 60% to 100% RH. View Full-Text
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Lim, W.H.; Yap, Y.K.; Chong, W.Y.; Ahmad, H. All-Optical Graphene Oxide Humidity Sensors. Sensors 2014, 14, 24329-24337.
Lim WH, Yap YK, Chong WY, Ahmad H. All-Optical Graphene Oxide Humidity Sensors. Sensors. 2014; 14(12):24329-24337.Chicago/Turabian Style
Lim, Weng H.; Yap, Yuen K.; Chong, Wu Y.; Ahmad, Harith. 2014. "All-Optical Graphene Oxide Humidity Sensors." Sensors 14, no. 12: 24329-24337.