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Zhong M.,Nanjing Normal University | Zhong M.,Hezhou College | Han G.-M.,Guilin University of Electronic Technology
Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves | Year: 2016

A periodic multilayer structure with metal and dielectric layers is proposed to obtain a broad stop-band filter. The influence of three factors (the number of the metal layer (n), the metal layer and the dielectric layer) on the stop-band and central frequency of cross ring resonator (CRR) filter has been investigated. Simulated results indicate that the stop-bandwidth can reach to 2.2 THz. Moreover, The stop-band and central frequency can be modulated by selecting appropriate n or dielectric layer, but it is not sensitive to the metal layer. © 2016, Chinese Optical Society. All right reserved.


Xu Z.-Y.,Guangxi Normal University | Zhang W.,Guangxi Normal University | Fan Y.-Y.,Hezhou College
Applied Mechanics and Materials | Year: 2013

The search of the attribute reduction algorithm of rough set in incomplete decision table is a research hot spot. Though analysis of the advantages and disadvantages of the existing attribute reduction algorithms,we put forward a definition of relative discernibility matrix base on the positive area. Then we compute the tolerance class with the the idea of cardinal number sorting method, giving a quick heuristic algorithm of attribute reduction with theE conditional entropy and relative discernibility matrix, which of the time complexity is max{O(|C|2|Upos|Uneg|),O(|K||U||U|)}in the worst case. The test result shows that the algorithm can obtain an attribute reduction efficiently. © (2013) Trans Tech Publications, Switzerland.


Zhong M.,Nanjing Normal University | Zhong M.,Hezhou College | Ye Y.-H.,Nanjing Normal University
Chinese Physics B | Year: 2014

Transmission and negative refractive index (NRI) of metal - dielectric - metal (MDM) sandwiched metamaterial perforated with four kinds of shapes of holes are numerically studied. Results indicate that positions of all transmission peaks of these kinds of holes are sensitive to the shape of the hole. Under the same conditions, the circular hole can obtain the maximum NRI and the rectangular hole can obtain the maximum frequency bandwidth of NRI. Moreover, the figure of merit (FOM) of the circular hole is the maximum too. As a result, we can obtain a higher NRI and FOM metamaterial by drilling circular hole arrays on MDM metamaterial. © 2014 Chinese Physical Society and IOP Publishing Ltd.


Zhong M.,Nanjing Normal University | Zhong M.,Hezhou College
Chinese Optics Letters | Year: 2013

The transmission and negative refractive index (NRI) of metal-dielectric-metal sandwiched metamaterials perforated with different filling media of holes are numerically studied. Results indicate that filling the appropriate medium in rectangular holes can enhance transmission. The NRI and frequency bandwidth of NRI decrease with increased relative permittivity of the filling medium. A stronger magnetic response that contributes to the dual NRI metamaterials is found. © 2013 Chinese Optics Letters.


Zhong M.,Nanjing Normal University | Zhong M.,Hezhou College
Hongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves | Year: 2014

The transmission, negative refractive index (NRI) and figure of merit (FOM) of metal-dielectric-metal (MDM) sandwiched metamaterial, which is perforated with different length of rectangular holes, are numerically studied. The low-frequency transmission peak and maximum transmission peaks of rectangular hole are red-shifted with the increasing of the length of holes. The NRI and the frequency bandwidth of NRI of the rectangular holes are reduced with the increase of the length of holes. It becomes possible to obtain a higher transmission or NRI of metamaterial by adjusting the length of the rectangular holes on MDM metamaterial arrays.


Zhong M.,Nanjing Normal University | Zhong M.,Hezhou College
Chinese Optics Letters | Year: 2014

Transmission and negative refractive index (NRI) of metal-dielectric-metal (MDM) metamaterials perforated with different thickness of dielectric layer are studied. It can be found that transmission peaks of rectangular hole are sensitive to the thickness of the dielectric layer. NRI and the bandwidth of NRI are increased with the increasing of the thickness of dielectric layer. NRI of rectangular hole with the thickness of dielectric layer almost follows a linear law when the thickness of dielectric layer in 2-5 μm. A high NRI of metamateriral can be obtained by adjusting the thickness of the dielectric layer of the rectangular hole on MDM metamateriral arrays. © 2014 Chinese Optics Letters.


Zhong M.,Hezhou College | Ye Y.H.,Nanjing Normal University
Canadian Journal of Physics | Year: 2015

We present the effects of localized surface plasmon (LSP) and surface plasmon polariton (SPP) modes on transmission peaks and resonance frequency of a compound structure metamaterial consisting of periodic metallic particle and hole arrays. During simulation, the lateral interval (Lx) between the metal particle and hole arrays is increased but the longitudinal interval (L) remains unchanged. Simulated results indicate that the main transmittance peak is enhanced and the resonant frequency red-shifted when Lx is increased, while the high-frequency transmittance peak is reduced and its resonance frequency is unchanged. We find that the increase in the intensity of SPP modes leads to the variation of the main transmittance peak, and the increase of the intensity of LSP modes results in the reduction of the high-frequency transmittance peak with increasing Lx. © 2015 Published by NRC Research Press.


Zhong M.,Nanjing Normal University | Zhong M.,Hezhou College | Ye Y.,Nanjing Normal University
Optics Communications | Year: 2014

We have studied the influence of interaction and coupling of localized surface plasmon (LSP) on the transmission peak and resonance frequency of compound structure metamaterials. It is found that the longitudinal interval (L) between metal particle and rectangular holes arrays has an important influence on the interaction and coupling strength of LSP modes of the designed compound structure. Results indicate that the reduction of transmission peak and red-shift of resonance frequency of the designed compound structure can be modulated through increasing the interaction and coupling strength of LSP modes. © 2014 Elsevier B.V. All rights reserved.


Zhong M.,Nanjing Normal University | Zhong M.,Hezhou College | Ye Y.H.,Nanjing Normal University
Applied Physics A: Materials Science and Processing | Year: 2015

We have presented a systematic numerical study about a compound structure to obtain a broad pass-band optical metamaterial filter at terahertz frequency. The designed structure consists of periodic composite metallic arrays and dielectric layer. In order to increase the pass-bandwidth of such metamaterial filter, the sidewall length of square hole is increased. The availability of bandwidth enhancement is verified by our simulation in this paper, which is performed through full-wave method by using the commercial software Ansoft HFSS 13.0. Based on analysis of this rich optical response, we found that the effective impedance matched to free space leads to the pass-bandwidth increased. We hope these results are useful to modulate the electromagnetic wave in optoelectronics, such as sensor and spectroscopy in the future. © 2015, Springer-Verlag Berlin Heidelberg.

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