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2008 International Workshop on Metamaterials最新文献

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Design of multi-beam antennas via optical transformation for anti-collision radar system 防撞雷达系统多波束光变换天线设计
2008 International Workshop on Metamaterials Pub Date : 2008-12-22 DOI: 10.1109/META.2008.4723587
Yan Yang, Xiangmo Zhao, Tianjiao Wang
{"title":"Design of multi-beam antennas via optical transformation for anti-collision radar system","authors":"Yan Yang, Xiangmo Zhao, Tianjiao Wang","doi":"10.1109/META.2008.4723587","DOIUrl":"https://doi.org/10.1109/META.2008.4723587","url":null,"abstract":"Anti-collision radars help prevent car accidents by detecting obstacles around vehicles equipped with such systems. This task relies on a high-performance antenna, which can detect the obstacles efficiently around the care. In this paper, we investigate the design of multi-beam antennas by the technique of optical transformation. Analytical formulas of the permittivity and permeability tensors are presented for the metamaterial layer in the antenna. The designed multi-beam antennas are validated by full-wave simulations using the finite-element method. The proposed multi-beam antennas will be very useful in the intelligent traffic system.","PeriodicalId":345360,"journal":{"name":"2008 International Workshop on Metamaterials","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129748707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
A superstrate for microstrip patch antennas 微带贴片天线的上覆层
2008 International Workshop on Metamaterials Pub Date : 2008-12-22 DOI: 10.1109/META.2008.4723620
Q. Cheng, X. Zhou, Bing-Han Zhou, H. Xu, T. Cui
{"title":"A superstrate for microstrip patch antennas","authors":"Q. Cheng, X. Zhou, Bing-Han Zhou, H. Xu, T. Cui","doi":"10.1109/META.2008.4723620","DOIUrl":"https://doi.org/10.1109/META.2008.4723620","url":null,"abstract":"We propose a novel superstrate for microstrip patch antennas, which is actually a metamaterial lens that could enhance the directivity of the antennas without changing their operation frequencies and the directions of maximum radiation. Such a superstrate could also be applied to other kinds of planar antennas, which is very important in the modern antenna designs.","PeriodicalId":345360,"journal":{"name":"2008 International Workshop on Metamaterials","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126396840","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Giant positive or negative lateral shift of acoustic wave on reflection from weakly absorbing real or complex bulk module media 从弱吸收的真实或复杂的块状模块介质反射的声波的巨大正或负横向位移
2008 International Workshop on Metamaterials Pub Date : 2008-12-22 DOI: 10.1109/META.2008.4723610
Lunwu Zeng, Cunli Dai, Runxia Song
{"title":"Giant positive or negative lateral shift of acoustic wave on reflection from weakly absorbing real or complex bulk module media","authors":"Lunwu Zeng, Cunli Dai, Runxia Song","doi":"10.1109/META.2008.4723610","DOIUrl":"https://doi.org/10.1109/META.2008.4723610","url":null,"abstract":"Calculation and simulation show us that when acoustic wave is incident from real bulk module media to complex bulk module media (or from complex bulk module media to real bulk module media), giant positive or negative lateral shift of reflection wave will occur. When acoustic wave is incident from a complex bulk module media to another complex bulk module media, the giant positive or negative lateral shift will occur too.","PeriodicalId":345360,"journal":{"name":"2008 International Workshop on Metamaterials","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126405797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design of single layer wave-absorbers based on lefthanded materials 基于左旋材料的单层吸波器设计
2008 International Workshop on Metamaterials Pub Date : 2008-12-22 DOI: 10.1109/META.2008.4723600
Z. Zhang, Z. Wang, S. Qin, Zhen Ming Wang, Yue Kun Wang
{"title":"Design of single layer wave-absorbers based on lefthanded materials","authors":"Z. Zhang, Z. Wang, S. Qin, Zhen Ming Wang, Yue Kun Wang","doi":"10.1109/META.2008.4723600","DOIUrl":"https://doi.org/10.1109/META.2008.4723600","url":null,"abstract":"A physical model of microwave-absorber with an air/left-handed material/metal structure is proposed, the absorbing characteristics of it is theoretically analyzed, the design fundamentals, ensuring that the absorber has a high absorbing performance in a certain frequency band, and the laws of the distributions of the electromagnetic parameters values satisfying the fundamentals are derived. The results of this work may be a reference to the designs of single layer wave-absorbers made of left-handed materials.","PeriodicalId":345360,"journal":{"name":"2008 International Workshop on Metamaterials","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128181925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental investigation of slow light phenomenon in photonic crystal waveguide line defect laser 光子晶体波导线缺陷激光器中慢光现象的实验研究
2008 International Workshop on Metamaterials Pub Date : 2008-12-22 DOI: 10.1109/META.2008.4723569
M. Xing, G. Ren, Wei Chen, Wenjun Zhou, Hailing Wang, Linghui Chen, Wanhua Zheng
{"title":"Experimental investigation of slow light phenomenon in photonic crystal waveguide line defect laser","authors":"M. Xing, G. Ren, Wei Chen, Wenjun Zhou, Hailing Wang, Linghui Chen, Wanhua Zheng","doi":"10.1109/META.2008.4723569","DOIUrl":"https://doi.org/10.1109/META.2008.4723569","url":null,"abstract":"The guide mode whose frequency locates in the band edge in photonic crystal single line defect waveguide has very low group velocity. So the confinement and gain of electromagnetic field in the band edge are strongly enhanced. Photonic crystal waveguide laser is fabricated and the slow light phenomenon is investigated. The laser is pumped by pulsed pumping light at 980 nm whose duty ratio is 0.05%. The active layer in photonic crystal slab is InGaAsP multiple quantum well. Light is transmitted by a photonic crystal chirp waveguide in one facet of the laser. Then the output light is coupled to a fiber and the character of laser is analysis by an optical spectrometer. It is found that single mode and multimode happens with different power of pumping light. Meanwhile the plane wave expansion and finite-difference time-domain methods are used to simulate the phenomenon of slow light. And the result of the experiment is compared with the theory which proves the slow light results in lasing oscillation.","PeriodicalId":345360,"journal":{"name":"2008 International Workshop on Metamaterials","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129979160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Transmission properties of composite metamaterials in the terahertz domain 复合超材料在太赫兹域中的传输特性
2008 International Workshop on Metamaterials Pub Date : 2008-12-22 DOI: 10.1109/META.2008.4723570
Ming Li, Z. Wen, Jinxin Fu, X. Fang, Yaomin Dai, Xiufeng Han, X. Qiu
{"title":"Transmission properties of composite metamaterials in the terahertz domain","authors":"Ming Li, Z. Wen, Jinxin Fu, X. Fang, Yaomin Dai, Xiufeng Han, X. Qiu","doi":"10.1109/META.2008.4723570","DOIUrl":"https://doi.org/10.1109/META.2008.4723570","url":null,"abstract":"A periodic array of subwavelength holes in a metal film (i.e. one-layer fishnet structure), an array of split-ring resonators (SRRs) and composite metamaterials (CMMs) combining the two former structures on the same board are fabricated and transmission measurements are performed in the terahertz regime. Anomalous enhanced transmission of metallic subwavelength holes and the magnetic mode of the SRRs are observed in the composite metamaterials. A new plasmon resonance due to the coupling between fishnet wires and SRRs in the CMMs is also observed. Numerical simulations agree well with the experimental spectra and further confirm our results. These findings are expected to have potential applications in designing novel metamaterials.","PeriodicalId":345360,"journal":{"name":"2008 International Workshop on Metamaterials","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134387046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
New transport regime and Zitterbewegung effect in two-dimensional photonic crystal 二维光子晶体中的新输运机制和齐特比宫效应
2008 International Workshop on Metamaterials Pub Date : 2008-12-22 DOI: 10.1109/META.2008.4723521
Xiangdong Zhang
{"title":"New transport regime and Zitterbewegung effect in two-dimensional photonic crystal","authors":"Xiangdong Zhang","doi":"10.1109/META.2008.4723521","DOIUrl":"https://doi.org/10.1109/META.2008.4723521","url":null,"abstract":"A new transport regime of electromagnetic wave in two-dimensional photonic crystal near the Dirac point has been demonstrated by exact numerical simulation. In this regime, the conductance of photon is inversely proportional to the thickness of sample, which can be described by Dirac equation very well. Based on it, some unusual beating effects, which can be regarded as optical analogue to Zitterbewegung of relativistic electron, can also be observed near the Dirac point in a two-dimensional photonic crystal. The superiority of such a phenomenon for photons is that it can be found in different scaling structures with wide frequency regions. It can be observed by measuring the time dependence of the transmission coefficient through photonic crystal slabs. Thus, it is particularly suited for experimentally observing this effect. We have observed such a phenomenon by exact numerical simulations, confirming a long-standing theoretical prediction.","PeriodicalId":345360,"journal":{"name":"2008 International Workshop on Metamaterials","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133080893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Design of circular polarization microstrip patch antennas with complementary split ring resonator 互补分环谐振腔圆极化微带贴片天线设计
2008 International Workshop on Metamaterials Pub Date : 2008-12-22 DOI: 10.1109/META.2008.4723614
Hui Zhang, Youquan Li, X. Chen, Yun-qi Fu, N. Yuan
{"title":"Design of circular polarization microstrip patch antennas with complementary split ring resonator","authors":"Hui Zhang, Youquan Li, X. Chen, Yun-qi Fu, N. Yuan","doi":"10.1109/META.2008.4723614","DOIUrl":"https://doi.org/10.1109/META.2008.4723614","url":null,"abstract":"A novel design of circular polarization microstrip patch antenna based on the complementary split ring resonator is evaluated numerically and experimentally verified. Unlike the previous application of its resonant performance, the non-resonant property of complementary split ring resonator is used as an asymmetric perturbation to excite the square microstrip patch antenna for a good circular polarization radiation. Good agreement is observed between the measurement and simulation results.","PeriodicalId":345360,"journal":{"name":"2008 International Workshop on Metamaterials","volume":"101 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116960786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 27
Correlation between extraordinary optical transmission and polarization in metallic subwavelength structures 金属亚波长结构中超光传输与偏振的关系
2008 International Workshop on Metamaterials Pub Date : 2008-12-22 DOI: 10.1109/META.2008.4723559
Yuehui Lu, M. H. Cho, Youngpak Lee, J. Rhee
{"title":"Correlation between extraordinary optical transmission and polarization in metallic subwavelength structures","authors":"Yuehui Lu, M. H. Cho, Youngpak Lee, J. Rhee","doi":"10.1109/META.2008.4723559","DOIUrl":"https://doi.org/10.1109/META.2008.4723559","url":null,"abstract":"Extraordinary optical transmission (EOT) of both transverse-electric (TE) and transverse-magnetic (TM) polarizations was investigated for sub-wavelength metallic structures by the rigorous coupled-wave analysis, implemented as the Airy-like internal reflection series. Generally, because of the absence of coupled surface plasmon polaritons (SPPs), the SPP-produced EOT is not achievable for TE polarization in one-dimensional structures, unlike for TM one. We show that the TE-polarized EOT is also possible by the excitation of trapped modes in simply modified structures. Eventually, the polarization-independent EOT was illustrated at a certain wavelength.","PeriodicalId":345360,"journal":{"name":"2008 International Workshop on Metamaterials","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127303525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A FETI-DP method for the analysis of finite periodic metamaterial arrays 一种分析有限周期超材料阵列的FETI-DP方法
2008 International Workshop on Metamaterials Pub Date : 2008-12-22 DOI: 10.1109/META.2008.4723594
T. Wan, R. Chen, J. Zhu
{"title":"A FETI-DP method for the analysis of finite periodic metamaterial arrays","authors":"T. Wan, R. Chen, J. Zhu","doi":"10.1109/META.2008.4723594","DOIUrl":"https://doi.org/10.1109/META.2008.4723594","url":null,"abstract":"A domain decomposition method (DDM) combined with edge-based finite-element method, namely the dual-primal finite element tearing and interconnecting (FETI-DP), is formulated to solve the problems of finite periodic metamaterial arrays. In this method, the entire computational domain is partitioned into several non-overlapping subdomains. At the subdomain interfaces, Robin-type transmission condition is used to ensure the continuity of the electric and magnetic fields. The dual-primal idea with two Lagrange multipliers is introduced. The volume unknowns are reduced to interface unknowns by Gaussian elimination so that the computational complexity is reduced. For the finite periodic metamaterial arrays, each substructure can be treated as a subdomain, the geometrical repetition of the substructures can be full exploited to accelerate the simulation and reduce the memory requirement. Example of the analysis of a perfect metamaterial absorber is presented. Numerical results demonstrate the accuracy and efficiency of this method.","PeriodicalId":345360,"journal":{"name":"2008 International Workshop on Metamaterials","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129168417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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