RF Loss Characteristics of Coplanar Waveguide Employing Chemically Modified Graphene on Flexible Substrates

Oh, Hyung‐Suk; Yun, Young; Jeong, Sooyeon; Jeong, Se Young; Kim, Hong Seung

doi:10.1007/s42341-018-0019-7

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…In addition, flexible substrates were also utilized to fabricate the thermochromic device, including polydimethylsiloxane, , polyethylene terephthalate, , and polyester film. , As shown in Figure a, the PET film was selected to fabricate the flexible device. It was obvious that the excellent optical property could be maintained when subjected to bending.…”

Section: Resultsmentioning

confidence: 99%

Durable and Controllable Smart Windows Based on Thermochromic Hydrogels

Meng

Xia

et al. 2020

ACS Appl. Mater. Interfaces

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In recent years, the use of smart windows to adjust sunlight to achieve energy conversion has received increasing attention. In this paper, a novel smart window was easily prepared by using thermochromic hydrogels as an interlayer and indium tin oxide films as an electric heating layer. The shielding transmission rates of visible and near-infrared light reached 88.3 and 85.4% at the temperature of 25 °C, respectively. However, the transmittance at a light wavelength of 550 nm was greater than 70% after applying voltage. The smart windows with different components could possess thermochromic temperature ranging from 28 to 35 °C, which was suitable for daily life. The smart window could maintain a stable reversible thermochromic transition. Importantly, the time of light transition and the demand of energy efficiency could be adjusted by controlling the magnitude of the output voltage, which benefited the development of energy-efficient materials.

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Section: Resultsmentioning

confidence: 99%

Durable and Controllable Smart Windows Based on Thermochromic Hydrogels

Meng

Xia

et al. 2020

ACS Appl. Mater. Interfaces

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Towards RF graphene devices: A review

et al. 2022

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Development of Transmission Line Employing Graphene-silver Nanowire/PET Structure for Application in Flexible and Wearable Devices in X-band Wireless Communication Systems

Oh,

Jeong,

Yun

et al. 2024

J. Electromagn. Eng. Sci

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In this study, we fabricated a coplanar waveguide using a novel graphene-silver nanowire composite structure (GNCS) on a polyethylene terephthalate (PET) substrate and then investigated its radio frequency (RF) characteristics. According to the measured results, the coplanar waveguide employing GNCS exhibited a substantially lower loss of transmission line than conventional waveguides. Furthermore, compared to the conventional graphene-based coplanar waveguide, the proposed structure allowed for lower skin depth and higher conductivity, resulting from the high electric conductivity of the silver nanowire. In addition, repetitive bending tests, which were performed to investigate the electric stability of the graphene-silver nanowire, showed that the coplanar waveguide employing GNCS offered substantially better electrical stability than the conventional graphene-based coplanar waveguide. These results indicate that the graphene-silver nanowire structure is a promising candidate for application in flexible wireless communication systems. Notably, this is also the first study to investigate the RF performance and electrical stability of a graphene-silver nanowire/PET structure.

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RF Loss Characteristics of Coplanar Waveguide Employing Chemically Modified Graphene on Flexible Substrates

Cited by 3 publications

References 7 publications

Durable and Controllable Smart Windows Based on Thermochromic Hydrogels

Durable and Controllable Smart Windows Based on Thermochromic Hydrogels

Towards RF graphene devices: A review

Development of Transmission Line Employing Graphene-silver Nanowire/PET Structure for Application in Flexible and Wearable Devices in X-band Wireless Communication Systems

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