Graphene Oxide Assisted Humidity Sensing Antenna Sensor
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Date
2025
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Journal Title
Journal ISSN
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Publisher
Korean Institute of Electrical and Electronic Material Engineers
Abstract
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.
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Keywords
Graphene devices, Graphene oxide, Microstrip antennas, Microwave antennas, Antenna sensors, Coated substrates, Graphene oxides, Humidity sensing, Loss tangent, Planar antennas, Relative humidity, Relative permittivity, Substrate material, Humidity sensors
Citation
Transactions on Electrical and Electronic Materials, 2025, 26, 1, pp. 69-77