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2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics最新文献

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Polarization angle independent perfect metamaterial absorber 不依赖偏振角的完美超材料吸收体
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948551
F. Dincer, M. Karaaslan, E. Unal, O. Akgol, E. Demirel, C. Sabah
{"title":"Polarization angle independent perfect metamaterial absorber","authors":"F. Dincer, M. Karaaslan, E. Unal, O. Akgol, E. Demirel, C. Sabah","doi":"10.1109/METAMATERIALS.2014.6948551","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948551","url":null,"abstract":"This paper presents a perfect metamaterial absorber (MA) based on rings and cross wires (RCWs) configuration in microwave frequency regime. Maxima absorption rate is at for simulation and at for experiment, in order. The proposed MA provides perfect absorption with angle of polarization independency. Consequently, suggested model enable myriad potential applications such as stealth and military technologies.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123630552","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
Modeling and predicting surface roughness via transformation optics 通过变换光学建模和预测表面粗糙度
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948657
O. Ozgun, M. Kuzuoglu
{"title":"Modeling and predicting surface roughness via transformation optics","authors":"O. Ozgun, M. Kuzuoglu","doi":"10.1109/METAMATERIALS.2014.6948657","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948657","url":null,"abstract":"Monte Carlo analysis of surface roughness in electromagnetic scattering problems is presented by using the principles of transformation electromagnetics/optics in finite methods. The main motivation in the proposed approach is to eliminate the need of mesh generation for each surface in repeated Monte Carlo realizations, and hence, to devise a faster model in predicting surface roughness. A single, simple and uniform mesh is employed assuming a smooth surface and ignoring the actual surface, and thereafter, a transformation medium is designed on the smooth surface to make this problem equivalent to the original problem with actual surface. The material parameters of the transformation medium are determined by transforming the smooth surface to the actual surface through a specially-defined coordinate transformation. The technique is demonstrated via various finite element simulations.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130156183","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
Periodic bi-isotropic crystals with spectral asymmetry 光谱不对称的周期性双各向同性晶体
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948663
F. Prudêncio, S. Matos, C. Paiva
{"title":"Periodic bi-isotropic crystals with spectral asymmetry","authors":"F. Prudêncio, S. Matos, C. Paiva","doi":"10.1109/METAMATERIALS.2014.6948663","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948663","url":null,"abstract":"We study periodic layered structures formed by bi-isotropic media with the aim of exploring nonreciprocal effects in the corresponding photonic band diagrams. We prove that under some conditions the photonic band diagrams can exhibit spectral asymmetry such that ω(kz) ≠ ω(-kz). Surprisingly, this is only possible when the photonic crystal contains both chiral and Tellegen materials. Furthermore, we demonstrate that the band structure of layered Tellegen photonic crystals that break simultaneously the space inversion and time reversal symmetries is always symmetric for propagation along the direction normal to the stratification. We explain this result by identifying another symmetry that protects the band diagrams of asymmetries. Moreover, we show that Tellegen structures which cannot be reduced to conventional structures under a duality transformation have nondegenerated Bloch eigenmodes.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127775632","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
Controllable Tamm plasmon effect designed by admittance loci 导纳座设计的可控塔姆等离子体效应
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948602
Che-Yuan Chang, Kuo‐Ping Chen
{"title":"Controllable Tamm plasmon effect designed by admittance loci","authors":"Che-Yuan Chang, Kuo‐Ping Chen","doi":"10.1109/METAMATERIALS.2014.6948602","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948602","url":null,"abstract":"Tamm plasmon is a plasmonic resonance happens at the boundary of photonic crystal and metal. In this work, a novel design tool based on admittance loci is proposed to demonstrate the relationship between Tamm plasmon structure and the corresponding resonance effect. The tunability of resonance wavelengths and the optimization of coupling efficiency are presented.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126417750","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
Parity-time acoustic metamaterials and unidirectional invisible sensors 奇偶时声学超材料和单向不可见传感器
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948587
R. Fleury, A. Alú
{"title":"Parity-time acoustic metamaterials and unidirectional invisible sensors","authors":"R. Fleury, A. Alú","doi":"10.1109/METAMATERIALS.2014.6948587","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948587","url":null,"abstract":"We theoretically and experimentally investigate the unique scattering properties of parity-time acoustic systems. We observe acoustic invisibility of airborne sound at audible frequencies in a parity-time symmetric meta-molecule made of perfectly balanced gain and loss subunits. This is achieved in a waveguide configuration using electro-acoustic resonators loaded with non-Foster elements, which are tailored to induce invisibility at the design frequency. This unidirectional reflectionless system is fully stable and self-sensing, allowing for robust implementation of parity-time acoustic metamaterials for loss compensation, non-invasive sensing and advanced acoustic signal manipulation.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126465978","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
Photonic simulation of the Dirac equation in metamaterials 超材料中狄拉克方程的光子模拟
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948548
W. Tan, Yong Sun, S. Shen, Hong Chen
{"title":"Photonic simulation of the Dirac equation in metamaterials","authors":"W. Tan, Yong Sun, S. Shen, Hong Chen","doi":"10.1109/METAMATERIALS.2014.6948548","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948548","url":null,"abstract":"We propose to establish the relation between the topological order in condensed matter systems and the novel optical properties in metamaterials, by mapping explicitly Maxwell's equations to the Dirac equation in one dimension (1D). Band inversion and end states, as two typical topological phenomena in the Dirac equation, have been observed in microwave experiments.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126563009","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
Transport properties of periodic metamaterials 周期性超材料的输运性质
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948553
Y. Godin
{"title":"Transport properties of periodic metamaterials","authors":"Y. Godin","doi":"10.1109/METAMATERIALS.2014.6948553","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948553","url":null,"abstract":"We determine the effective complex permittivity of a two-dimensional composite, consisting of an arbitrary doubly periodic array of identical circular cylinders in a homogeneous matrix, whose dielectric properties are complex-valued. Efficient formulas are provided to determine the effective complex permittivity tensor which are in excellent agreement with numerical calculations. We also show that the real and imaginary parts of the effective complex-valued tensor can exhibit non-monotonic behavior as functions of volume fraction of cylinders.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"1 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131957385","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
Retrieving constitutive parameters of plasmonic multilayers from reflection and transmission coefficients 从反射系数和透射系数反演等离子体多层膜的本构参数
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948571
A. Orlov, E. A. Yankovskaya, S. Zhukovsky, Viktoriia E. Babicheva, P. Belov
{"title":"Retrieving constitutive parameters of plasmonic multilayers from reflection and transmission coefficients","authors":"A. Orlov, E. A. Yankovskaya, S. Zhukovsky, Viktoriia E. Babicheva, P. Belov","doi":"10.1109/METAMATERIALS.2014.6948571","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948571","url":null,"abstract":"We show how to correctly extract the effective permittivity and permeability of plasmonic multilayers in the optical domain. For material parameters retrieval the classical Nicolson-Ross-Weir method is commonly used. However, its direct application leads to spurious zero-permittivity points and false permeability resonances in the case of total reflection from the slab. We offer a way to overcome this issue and retrieve correct constitutive parameters of plasmonic multilayers.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"610 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132950380","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
Numerical analysis for reflectance properties of bird-feather fibers 鸟类羽毛纤维反射特性的数值分析
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948614
G. Fujii, T. Ueta, G. Morimoto, M. Nakamura
{"title":"Numerical analysis for reflectance properties of bird-feather fibers","authors":"G. Fujii, T. Ueta, G. Morimoto, M. Nakamura","doi":"10.1109/METAMATERIALS.2014.6948614","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948614","url":null,"abstract":"This paper presents reflective properties of bird-feather fibers. The fibers are modeled as two-dimensional photonic crystals containing a number of pores. The finite element method is used to simulate light scattering by the feathers. Reflectivity becomes relatively higher in the wavelength range from 300[nm] to 500[nm]. Strong light scattering and interference are observed in the fibers.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124360957","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
Predictive modeling of far-field pattern of a metamaterial antenna 超材料天线远场方向图的预测建模
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948556
M. Johnson, A. Bily, N. Kundtz
{"title":"Predictive modeling of far-field pattern of a metamaterial antenna","authors":"M. Johnson, A. Bily, N. Kundtz","doi":"10.1109/METAMATERIALS.2014.6948556","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948556","url":null,"abstract":"Using reconfigurable metamaterials in conjunction with the principles of holography, new satellite antennas are under development for broadband communications. Yet, the promise of these devices will not be realized without efficient and effective control and optimization. Toward this end, we demonstrate a discrete-dipole approximation (DDA) model of a waveguide-fed planar metamaterial antenna. The proposed model predicts the far-field pattern of a 2D metamaterial antenna more than twice as accurately as models typically used in the field.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123262963","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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