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Author: search.filters.author.Kandasamy, K.Subject: search.filters.subject.Coated substrates

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    Graphene Oxide Assisted Humidity Sensing Antenna Sensor
    (Korean Institute of Electrical and Electronic Material Engineers, 2025) Singh, V.P.; Kandasamy, K.; Rahman, M.R.
    Abstract: In this paper, a graphene oxide (GO) coated substrate material is electrically characterized. The permittivity, loss tangent, permeability, and resistance are measured. A planar antenna with slots is designed on an RT/Duroid 5880 substrate. A thin layer of graphene oxide is coated on the identical slots of the planar antenna. The GO-assisted antenna sensor resonates at 2.51 GHz frequency. The graphene oxide-based antenna sensor performs contact-free sensing of relative humidity. The frequency sensitivity is approximately 17.5 MHz/10%RH. The design sensor gives a 93.50% linearity. The limit of detection is 30.55 RH%. Graphic Abstract: (Figure presented.) © The Korean Institute of Electrical and Electronic Material Engineers 2024.