Investigation of reflectance properties in a symmetric defective annular semiconductor–superconductor photonic crystal with a radial defect layer

Aghajamali, Alireza; Alamfard, Tannaz; Nayak, Chittaranjan

doi:10.1016/j.physb.2020.412770

Cited by 7 publications

(2 citation statements)

References 86 publications

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“…wave band gap and periodic distribution of dielectric constant are called photonic crystal [2,3]. Due to its unique electromagnetic band gap characteristics, scholars have conducted extensive research on photonic crystal [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Band gap characteristics of new composite multiple locally resonant phononic crystal metamaterial

Xiao,

Miao,

Zheng

et al. 2024

J. Phys.: Condens. Matter

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Locally resonant phononic crystal (LRPC) exhibit elastic wave band gap characteristics within a specific low-frequency range, but their band gap width is relatively narrow, which has certain limitations in practical engineering applications. In order to open a lower frequency band gap and broaden the band gap range, this paper proposes a new composite multiple locally resonant phononic crystal (CMLRPC). Firstly, the band structure of the CMLRPC is calculated by using the finite element method, and then the formation mechanism of the band gap of the CMLRPC is studied by analyzing its vibration mode, and the band gap width is expanded by adjusting the size of the single primitive cell in the supercell model of the CMLRPC. Secondly, an equivalent mass-spring system model for CMLRPC is established to calculate the starting frequency and cut-off frequency of the band gap, and the calculated results are in good agreement with the finite element calculation. Finally, the frequency response function (FRF) of the CMLRPC is calculated and its attenuation characteristics are analyzed. Within the band gap frequency range, the attenuation values of the CMLRPC are mostly above 20 dB, indicating a good attenuation effect. Compared with traditional LRPC, this new CMLRPC opens multiple band gaps in the frequency range of 200 Hz, with a wider band gap width and better attenuation effect. In addition, considering both the contact between single primitive cell and the adjustment of their spacing in the supercell model of the CMLRPC, lower and wider band gap can be obtained. The research results of this paper provide a new design idea and method for obtaining low-frequency band gap in LRPC, and can provide reference for the design of vibration reduction and isolation structures in the field of low-frequency vibration control.

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Section: Introductionmentioning

confidence: 99%

Band gap characteristics of new composite multiple locally resonant phononic crystal metamaterial

Xiao,

Miao,

Zheng

et al. 2024

J. Phys.: Condens. Matter

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“…Kaliteevski et al [43] have developed the version of transfer matrix method (TMM), like in a planar PC that is applied to analyze the propagation of electromagnetic wave in APC. The optical characteristics of APC (or CPC) composed of different types of materials have been studied by many researchers [44][45][46][47][48][49][50].…”

Section: Introductionmentioning

confidence: 99%

Investigation of reflection bands of 1D annular photonic crystal containing double negative index material and non-magnetized plasma

Aghajamali¹,

Srivastava²,

Nayak³

2022

physics

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In this paper, optical reflectance properties of an annular photonic crystal (APC) composed of alternate layers of double negative (DNG) material and a non-magnetized plasma (NMP) layer, immersed in free space, have been theoretically investigated and studied. The reflectance spectra of the annular PC have been obtained by employing the transfer matrix method (TMM) for the cylindrical waves in the case of TEpolarized wave only. It has been found that the spectral position and width of the reflection bands of APC are greatly influenced by the variation in the thickness of DNG metamaterial and NMP layer, respectively. Interestingly, it is observed that the presence of NMP layer causes the increase in photonic band gap (PBG) whereas the DNG layer reduces the PBG. Further, the effect of azimuthal mode number (m) on the reflectance spectra shows that for m > 0, splitting in the reflection bands occurs at the frequency corresponding to the zero permeability value of DNG metamaterial layer. Moreover, with the increase in azimuthal mode number one PBG is red-shifted and the second one is blue-shifted. Finally, the effect of change in the starting radius parameter of curved surface and plasma electron density on the reflectance spectra of APC has also been studied and very interesting results have been observed.

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Omnidirectional Reflectance of Superconductor-Dielectric Photonic Crystal in THz Frequency Range

Pandey

Suthar²,

Kumar

et al. 2021

J Supercond Nov Magn

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Investigation of reflectance properties in a symmetric defective annular semiconductor–superconductor photonic crystal with a radial defect layer

Cited by 7 publications

References 86 publications

Band gap characteristics of new composite multiple locally resonant phononic crystal metamaterial

Band gap characteristics of new composite multiple locally resonant phononic crystal metamaterial

Investigation of reflection bands of 1D annular photonic crystal containing double negative index material and non-magnetized plasma

Omnidirectional Reflectance of Superconductor-Dielectric Photonic Crystal in THz Frequency Range

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