Microwave absorption and radiation from large-area multilayer CVD graphene

Wu, Bian; Tuncer, Hatice M.; Katsounaros, Anestis; Wu, Wenbing; Cole, Matthew T.; Ying, Kai; Zhang, Lianhong; Milne, W. I.; Hao, Yang

doi:10.1016/j.carbon.2014.05.086

Cited by 72 publications

(30 citation statements)

References 44 publications

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“…Although this device exhibited flexibility and transparent properties, its absorption loss was negligible. Similar results have also been found in a multilayered stacked CVD‐grown graphene absorber . The ultrahigh conductivities and unreasonable structures prevent the absorption performances of CVD‐grown graphene‐based absorbers from being utilized.…”

Section: Graphene‐based Materials For Microwave Absorptionsupporting

confidence: 75%

Graphene‐Based Materials toward Microwave and Terahertz Absorbing Stealth Technologies

Chen

Huang

et al. 2019

Advanced Optical Materials

249

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Electromagnetic wave absorbing materials play an increasingly important role in consumer electronics and military defense. The remarkable merits of atomically thin graphene structures and their exotic optoelectronic properties provide new opportunities to design high‐performance electromagnetic wave absorbers. This progress report summarizes the recent advances in graphene‐based microwave and terahertz stealth materials. In the first section, the theory of electromagnetic wave absorption and the evaluation methods for absorption performance are briefly introduced. Then, representative graphene‐based microwave and terahertz absorber systems are presented with an emphasis on the selection of the absorbent component and structural design. In the last section, the perspectives and future research directions of this promising field are discussed.

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Section: Graphene‐based Materials For Microwave Absorptionsupporting

confidence: 75%

Graphene‐Based Materials toward Microwave and Terahertz Absorbing Stealth Technologies

Chen

Huang

et al. 2019

Advanced Optical Materials

249

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“…In particular, in the optical and THz regimes, graphene has been employed for the realization of optical absorbers exploiting Attenuated Total Reflectance (ATR) [2] or resonant configurations such as onedimensional (1D) periodic structures [3][4], two-dimensional photonic crystal cavities [5] and guided mode resonances [6][7]. On the other hand, in the microwave regime, few examples of graphene-based absorbers have been reported to date [8][9].…”

Section: Introductionmentioning

confidence: 99%

Optically transparent graphene-based Salisbury screen microwave absorber

Grande

D’Orazio

Bianco

et al. 2015

2015 IEEE 15th Mediterranean Microwave Symposium (MMS)

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We propose an analytical model to study the absorption of a graphene sheet in the microwave range when its sheet resistance is varied. We demonstrate that the maximum achievable for a suspended structure is 50% and it is independent of the frequency in the range of interest. Finally, we propose a microwave absorber based on a Salisbury screen configuration consisting of two opportunely doped graphene sheets separated by a quarter-wavelength dielectric lossless spacer. In particular, we show how it is possible to achieve nearperfect absorption over a wide frequency bandwidth and how this graphene-based absorber is less sensitive to the variation of the graphene sheet resistance. The realization of the microwave absorber with few-layer graphene leads to a fully transparent device in the visible-near infrared range.

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“…[17][18][19][20] The graphene sample opted in this work contains 2-3 layers, exhibiting enhanced energy absorption compared to monolayer graphene in both the microwave and optical regime. 21,22 Thermoacoustic and photoacoustic signals unambiguously attributed to the graphene sample were observed. A corresponding numerical model was established to predict the time-domain thermoacoustic signal profile, 23,24 which exhibited good resemblance with the measurement results.…”

mentioning

confidence: 90%

Thermoacoustic and photoacoustic characterizations of few-layer graphene by pulsed excitations

Wang

Witte²,

Xin³

2016

Applied Physics Letters

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We characterized the thermoacoustic and photoacoustic properties of large-area, few-layer graphene by pulsed microwave and optical excitations. Due to its high electric conductivity and low heat capacity per unit area, graphene lends itself to excellent microwave and optical energy absorption and acoustic signal emanation due to the thermoacoustic effect. When exposed to pulsed microwave or optical radiation, distinct thermoacoustic and photoacoustic signals generated by the few-layer graphene are obtained due to microwave and laser absorption of the graphene, respectively. Clear thermoacoustic and photoacoustic images of large-area graphene sample are achieved. A numerical model is developed and the simulated results are in good accordance with the measured ones. This characterization work may find applications in ultrasound generator and detectors for microwave and optical radiation. It may also become an alternative characterization approach for graphene and other types of two-dimensional materials. V

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Microwave absorption and radiation from large-area multilayer CVD graphene

Cited by 72 publications

References 44 publications

Graphene‐Based Materials toward Microwave and Terahertz Absorbing Stealth Technologies

Graphene‐Based Materials toward Microwave and Terahertz Absorbing Stealth Technologies

Optically transparent graphene-based Salisbury screen microwave absorber

Thermoacoustic and photoacoustic characterizations of few-layer graphene by pulsed excitations

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