Tunable plasmon induced transparency in patterned graphene metamaterial with different carrier mobility

Fan, Chunzhen; Ren, Peiwen; Jia, Yuanlin; Wang, Junqiao

doi:10.1016/j.spmi.2019.106295

Cited by 24 publications

(10 citation statements)

References 37 publications

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“…Figure 6(a) shows the simulated PIT spectra with different refractive index at room temperature. The frequencies of the transparent windows decrease linearly with the refractive index of the medium in figure 6(b), and the sensitivity is calculated by the following formula [37,38]:…”

Section: Simulation Results and Applicationsmentioning

confidence: 99%

Dynamically tunable plasmon-induced transparency effect based on graphene metasurfaces

Chen¹,

Li²,

Guo³

et al. 2021

J. Phys. D: Appl. Phys.

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Plasmon-induced transparency (PIT) is theoretically explored with a graphene metamaterial using finite-difference time-domain numerical simulations and coupled-mode-theory theoretical analysis. In this work, the proposed structure is consisted of one rectangular cavity and three strips to generate the PIT phenomenon. The PIT window can be regulated dynamically by adjusting the Fermi level of the graphene. Importantly, the modulation depth of the amplitude can reach 90.4%. The refractive index sensitivity of the PIT window is also investigated, and the simulation result shows that a sensitivity of 1.335 THz/RIU is achieved. Additionally, when the polarization angle of the incident light is changed gradually from 0˚ to 90˚, the performances of the structure are greatly affected. Finally, the proposed structure is particularly enlightening for the design of dynamically tuned terahertz devices.

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Section: Simulation Results and Applicationsmentioning

confidence: 99%

Dynamically tunable plasmon-induced transparency effect based on graphene metasurfaces

Chen¹,

Li²,

Guo³

et al. 2021

J. Phys. D: Appl. Phys.

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“…[5][6][7][8][9][10] However, to achieve selective radiation in daytime, the radiative cooler needs to have approximately unit reflection at the solar spectrum and high emission at the atmospheric window while considering the non-radiative condition. [11,12] In order to meet the necessary requirements, a multilayer structure, [13] a photonic metamaterials structure [14][15][16][17][18] and a random particle structure [19,20] were proposed to achieve daytime cooling. Rephaeli et al achieved a metal-dielectric photonic structure to get high-performance daytime radiative cooling.…”

Section: Introductionmentioning

confidence: 99%

Efficient realization of daytime radiative cooling with hollow zigzag SiO₂ metamaterials*

Yao¹,

Wang²,

Yin³

et al. 2021

Chinese Phys. B

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A tunable selective emitter with hollow zigzag SiO2 metamaterials, which are deposited on Si3N4 and Ag film, is proposed and numerically investigated for achieving excellent radiative cooling effects. The average emissivity reaches a high value of 98.7% in the atmospheric window and possesses a high reflectivity of 92.0% in the solar spectrum. To reveal the enhanced absorptivity, the confined electric field distribution is investigated, and it can be well explained by moth eye effects. Moreover, tunable emissivity can also be initiated with different incident angles and it stays above 83% when the incident angle is less than 80°, embodying the excellent cooling performance in the atmospheric transparency window. Its net cooling power achieves 100.6 W⋅m−2, with a temperature drop of 13°, and the cooling behavior can persist in the presence of non-radiative heat exchange conditions. Therefore, high and tunable selective emitters based on our designed structure could provide a new route to realizing high-performance radiative cooling. This work is also of great significance for saving energy and environmental protection.

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“…They can embody the dynamic regulation of PIT by virtue of its distinct photoelectric characteristics. [24][25][26] Regrettably, the traditional 2D materials constitute a conspicuous class of atomically thin layered materials. The external dielectric environment not only affects the properties of graphene-based materials, but also has a weak light absorption owing to its high transmittance larger than 90%.…”

Section: Introductionmentioning

confidence: 99%

Highly tunable plasmon-induced transparency with Dirac semimetal metamaterials*

Fan¹,

Ren²,

Jia³

et al. 2021

Chinese Phys. B

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Based on Dirac semimetal metamaterials, the tunable plasmon induced transparency (PIT) is investigated elaborately in this work. The designed unit cell consists of a strip and a square bracket, which is periodically aligned on the dielectric substrate. Our numerical results illustrate that a pronounced transparency window exists due to near field coupling between two bright modes, which can be dynamically tuned with Fermi energy. Namely, the transparency window demonstrates a distinct blue shift with a larger Fermi energy. Moreover, an on-to-off switch of the PIT transparency window is realized with different polarization angles. In addition, the accompanied slow light property is examined with the calculation of phase and group delay. Finally, a small variation of the refractive index of the substrate can induce a clear movement of the PIT transparency window which delivers a guidance in the application of optical sensing. Thus, this work provides us a new strategy to design compact and adjustable PIT devices and has potential applications in highly tunable optical switchers, sensors, and slow light devices.

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Tunable plasmon induced transparency in patterned graphene metamaterial with different carrier mobility

Cited by 24 publications

References 37 publications

Dynamically tunable plasmon-induced transparency effect based on graphene metasurfaces

Dynamically tunable plasmon-induced transparency effect based on graphene metasurfaces

Efficient realization of daytime radiative cooling with hollow zigzag SiO₂ metamaterials*

Highly tunable plasmon-induced transparency with Dirac semimetal metamaterials*

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Tunable plasmon induced transparency in patterned graphene metamaterial with different carrier mobility

Cited by 24 publications

References 37 publications

Dynamically tunable plasmon-induced transparency effect based on graphene metasurfaces

Dynamically tunable plasmon-induced transparency effect based on graphene metasurfaces

Efficient realization of daytime radiative cooling with hollow zigzag SiO2 metamaterials*

Highly tunable plasmon-induced transparency with Dirac semimetal metamaterials*

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Product

Resources

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Efficient realization of daytime radiative cooling with hollow zigzag SiO₂ metamaterials*