PIT-like effect in asymmetric and symmetric C-shaped metamaterials

Liu, Zhimin; Li, Hongjian; Zhan, Shiping; Cao, Guangtao; Xu, Hui; Yang, Hui; Xu, Xiuke

doi:10.1016/j.optmat.2012.11.021

Cited by 15 publications

(7 citation statements)

References 28 publications

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“…Overall, the fundamental principle of the PIT is based on the phase coupling mechanism and near-field coupling. Meanwhile, it has the benefits of large bandwidth and manipulating at room-temperature [21][22][23]. Recently, various MIM structures, which have different shapes of cavities, have been introduced in order to realise the PIT effect.…”

Section: Introductionmentioning

confidence: 99%

Metal–insulator–metal waveguide‐coupled asymmetric resonators for sensing and slow light applications

Akhavan

Ghafoorifard

Abdolhosseini

et al. 2018

IET Optoelectronics

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Section: Introductionmentioning

confidence: 99%

Metal–insulator–metal waveguide‐coupled asymmetric resonators for sensing and slow light applications

Akhavan

Ghafoorifard

Abdolhosseini

et al. 2018

IET Optoelectronics

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“…The exciting advantage is that the absorption properties of metamaterials are determined mainly by the size and shape of element unit cells rather than their composition, for example the common structure cut wire [19], split-ring [20], U-shaped structure [21], F-Shaped structure [22], etc. In the past, symmetric structures were mainly used to obtain high absorption, but now some deformations of symmetric structures are used to achieve perfect absorption at THz frequency [23,24]. Some fascinating phenomena appear when the symmetry of the structure is broken, such as multi-resonance that is suitable for developing multi-band or broadband absorption [25].…”

Section: Introductionmentioning

confidence: 99%

Dual-Band Perfect Metamaterial Absorber Based on an Asymmetric H-Shaped Structure for Terahertz Waves

Zhang

Qiu

et al. 2018

Materials

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We designed an ultra-thin dual-band metamaterial absorber by adjusting the side strips’ length of an H-shaped unit cell in the opposite direction to break the structural symmetry. The dual absorption peaks approximately 99.95% and 99.91% near the central resonance frequency of 4.72 THz and 5.0 THz were obtained, respectively. Meanwhile, a plasmon-induced transmission (PIT) like reflection window appears between the two absorption frequencies. In addition to theoretical explanations qualitatively, a multi-reflection interference theory is also investigated to prove the simulation results quantitatively. This work provides a way to obtain perfect dual-band absorption through an asymmetric metamaterial structure, and it may achieve potential applications in a variety of fields including filters, sensors, and some other functional metamaterial devices.

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“…Recently, LSPRs have also been found to play an important role on EOT [9], [10] in metal nanostructures with periodic hole arrays such as circular, rectangular, triangular, and compound holes due to their unique properties such as the capability of overcoming the diffraction limit, miniaturized size, and strong optical field confinement [11]- [13]. So far, many devices based on LSPRs or SPPs have been realized both theoretically and experimentally, such as plasmonic filters, sensors, and waveguides [14]- [17]. However, many nanostructures with simple hole arrays can't obtain high transmission or can't realize the consistence between the simulation and experiment in the optical regime.…”

Section: Introductionmentioning

confidence: 99%

Effects of Compound Rectangular Subwavelength Hole Arrays on Enhancing Optical Transmission

Zhang

Liu

et al. 2015

IEEE Photonics J.

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The optical transmission properties of the metallic film with an array of compound rectangular nanoholes are numerically investigated by the finite-difference time-domain (FDTD) method. The compound rectangular nanohole (unit cell) in such a structure consists of a large square hole with two small rectangular holes symmetrically distributed at its both sides. Extraordinary optical transmission (EOT) of more than 85% is obtained in this structure, which is larger than that found in the metal film perforated only with the large hole array (55%) or the small hole array (18%). The EOT in the optical regime mainly results from the excitation and coupling of localized surface plasmon resonances and surface plasmon polaritons. The EOT properties can be efficiently tailored in both wavelength and transmission intensity by varying the size and shape of nanoholes. Our structure also shows the sensitivity to environmental dielectric constant. These results indicate that our structure has potential applications in plasmonic filters and sensors.

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PIT-like effect in asymmetric and symmetric C-shaped metamaterials

Cited by 15 publications

References 28 publications

Metal–insulator–metal waveguide‐coupled asymmetric resonators for sensing and slow light applications

Metal–insulator–metal waveguide‐coupled asymmetric resonators for sensing and slow light applications

Dual-Band Perfect Metamaterial Absorber Based on an Asymmetric H-Shaped Structure for Terahertz Waves

Effects of Compound Rectangular Subwavelength Hole Arrays on Enhancing Optical Transmission

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