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https://hdl.handle.net/2440/131248
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Type: | Journal article |
Title: | N-doped reduced graphene oxide-PEDOT nanocomposites for implementation of a flexible wideband antenna for wearable wireless communication applications |
Author: | Tung, T. Chen, S. Fumeaux, C. Kim, T. Losic, D. |
Citation: | Nanotechnology, 2021; 32(24):1-19 |
Publisher: | IOP Publishing |
Issue Date: | 2021 |
ISSN: | 0957-4484 1361-6528 |
Statement of Responsibility: | Tran Thanh Tung, Shengjian Jammy Chen, Christophe Fumeaux, TaeYoung Kim and Dusan Losic |
Abstract: | We report a flexible and highly efficient wideband slot antenna based on a highly conductive composite of poly(3,4-ethylenedioxythiophene) (PEDOT) and N-doped reduced graphene oxide (N-doped rGO) for wearable applications. The high conductivity of this hybrid material with low sheet resistance of 0.56 Ω/square, substantial thickness of 55 μm, and excellent mechanical resilience (<5.5% resistance change after 1000 bending cycles) confirmed this composite to be a suitable antenna conductor. The antenna achieved an estimated conduction efficiency close to 80% over a bandwidth from 3 to 8 GHz. Moreover, the successful operation of a realized antenna prototype has been demonstrated in free space and as part of a wearable camera system. The read range of the system was measured to be 271.2 m, which is 23 m longer than that of the original monopole antennas provided by the supplier. The synergistic effects between the dual conjugated structures of N-doped rGO and PEDOT in a single composite with fine distribution and interfacial interactions are critical to the demonstrated material performance. The N-doped rGO sheet reinforces the mechanical stability whereas the PEDOT functions as additive and/or binder, leading to an improved electrical and mechanical performance compared to that of the graphene and PEDOT alone. This high-performing nanocomposite material meets requirements for antenna design and opens the door for diverse future non-metallic flexible electronic device developments. |
Keywords: | Graphene; graphene-PEDOT; graphene inks; graphene antenna; wearable antennas; flexible antenna |
Rights: | © 2021 IOP Publishing Ltd. |
DOI: | 10.1088/1361-6528/abed04 |
Grant ID: | http://purl.org/au-research/grants/arc/IH150100003 |
Published version: | http://dx.doi.org/10.1088/1361-6528/abed04 |
Appears in Collections: | ARC Research Hub for Graphene Enabled Industry Transformation publications Aurora harvest 4 Chemical Engineering publications |
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