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

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Resonant mode dynamics of two-dimensional ferromagnetic antidot lattices in the effective stripe limit 二维铁磁反点晶格在有效条纹极限下的共振模式动力学
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948542
R. Zivieri
{"title":"Resonant mode dynamics of two-dimensional ferromagnetic antidot lattices in the effective stripe limit","authors":"R. Zivieri","doi":"10.1109/METAMATERIALS.2014.6948542","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948542","url":null,"abstract":"The resonant mode dynamics of two-dimensional permalloy antidot lattices in the nanometric range is studied theoretically in the effective stripe limit. The analysis is performed both according to a finite-difference micromagnetic approach, the dynamical matrix method, and by means of analytical calculations. The external magnetic field applied along the y-axis aligns the static magnetization along the same direction which induces the formation of “surface magnetic charges” on the border of the holes. The passage from a discontinuous to a continuous effective “surface magnetic charges” distribution in the effective stripe limit has a strong influence on the dynamics of the resonant mode of the system. Due to the large demagnetizing field it is shown via analytical calculations that the resonant mode of the effective one-dimensional stripe cannot exist above a given aspect ratio. The dynamical properties of the resonant mode dramatically change passing from a two-dimensional to a one-dimensional magnonic metamaterial.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"5 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":"122439419","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 circular polarization reconfigurable antenna based on reconfigurable electromagnetic band-gap structures 一种基于可重构电磁带隙结构的圆极化可重构天线
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948628
K. Krishnamoorthy, B. Majumder, J. Mukherjee, K. P. Ray
{"title":"A circular polarization reconfigurable antenna based on reconfigurable electromagnetic band-gap structures","authors":"K. Krishnamoorthy, B. Majumder, J. Mukherjee, K. P. Ray","doi":"10.1109/METAMATERIALS.2014.6948628","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948628","url":null,"abstract":"A circular polarization reconfigurable dipole antenna allowing switching between two circular polarizations is proposed. It consists of a linearly polarized dipole antenna and array of polarization dependant EBG structures as the ground plane. Switching elements are used on the ground plane to get the required reflection phase for reconfigurable circular polarization.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"28 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":"126164314","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
Semi-analytic technique for the polarizability extraction of chiral helix particles 手性螺旋粒子极化率提取的半解析技术
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948629
T. Karamanos, N. Kantartzis
{"title":"Semi-analytic technique for the polarizability extraction of chiral helix particles","authors":"T. Karamanos, N. Kantartzis","doi":"10.1109/METAMATERIALS.2014.6948629","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948629","url":null,"abstract":"In this paper, a consistent method for the polarizability matrix retrieval of chiral helix particles is presented. First, it is assumed that, under certain circumstances, the particle can be modelled by electric and magnetic dipoles placed on its shape center. Then, the chiral particles are positioned at a 2D array illuminated by plane waves, and dipole moments are analytically calculated as a function of polarizabilities and incident waves. The scattered fields from the same surface are, also, analytically computed as a function of dipole moments, while the resulting non-linear system is numerically solved for the desired polarizabilities. The proposed algorithm is verified by means of a chiral helix particle at microwave frequencies.","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":"127800257","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
Metasurfaces for moulding waves: Synthesis and implementation roads 造型波的超表面:合成和实现道路
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948599
C. Caloz, M. A. Salem, K. Achouri
{"title":"Metasurfaces for moulding waves: Synthesis and implementation roads","authors":"C. Caloz, M. A. Salem, K. Achouri","doi":"10.1109/METAMATERIALS.2014.6948599","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948599","url":null,"abstract":"Novel perspectives for the synthesis and implementation of metasurfaces are proposed. Two synthesis techniques - the first general and systematic ones reported to date - are presented and compared: a spectral-momentum technique and a spatial-susceptibility technique. For the implementation, recent innovations and discoveries pertaining to both scatterer arrays and traveling-wave leaky-wave metasurfaces are described and compared.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"154 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":"132997353","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 new class of tunable multi-layer meta-surfaces 一类新的可调多层元曲面
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948645
M. Mavridou, A. Feresidis
{"title":"A new class of tunable multi-layer meta-surfaces","authors":"M. Mavridou, A. Feresidis","doi":"10.1109/METAMATERIALS.2014.6948645","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948645","url":null,"abstract":"A new class of tunable multi-layer meta-surfaces is presented whereby the proposed structures produce very low losses at millimeter wave frequencies. Two configurations are investigated as working examples of the proposed tuning technique. Initially, a tunable high impedance meta-surface is being studied, consisting of a square loop element printed on a dielectric substrate and placed over a ground plane creating an air cavity. Subsequently, the transmission and reflection properties of double layer meta-surfaces consisting of two square aperture arrays printed on dielectric substrates and separated by an air cavity are presented. Tuning of the reflection phase of the high impedance meta-surface and the bandpass filter response of the double layer meta-surface is achieved by means of piezoelectric actuators positioned around the surfaces. The proposed actuators dynamically change the thickness of the air cavities in both configurations, due to their property of expanding vertically under DC biasing, which results in tuning the reflection and transmission characteristics of the structures.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"42 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":"128438639","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
Two-dimensional spoof surface plasmon polaritons for designing holographic metasurfaces 设计全息超表面的二维欺骗表面等离子激元极化子
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948640
Y. Li, B. Cai, T. Cui
{"title":"Two-dimensional spoof surface plasmon polaritons for designing holographic metasurfaces","authors":"Y. Li, B. Cai, T. Cui","doi":"10.1109/METAMATERIALS.2014.6948640","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948640","url":null,"abstract":"We propose a method to design two-dimensional (2D) holographic metasurfaces, which are composed of textured structures, to support spoof surface plasmon polaritons (SPPs) in the microwave frequency. We implement the metasurface by an array of sub-wavelength metallic blocks drilled with dielectric holes. By mapping the corresponding surface impedance to the size of dielectric hole, we can shape the quasi-periodic distribution of spoof SPP structure. Combining with the holographic antenna technology and radiation theory of leaky-wave, we design a planar spiral antenna, which can generate the radiations of two reversely circular polarizations in the two sides of planar antenna. The design can be extended to millimeter-wave or THz regimes by scaling down the structure.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"5 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":"116686621","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
Tailoring the properties of dielectric resonator-based metamaterials 裁剪介电谐振器基超材料的特性
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948578
S. Campione, S. Liu, F. Capolino, I. Brener, M. Sinclair
{"title":"Tailoring the properties of dielectric resonator-based metamaterials","authors":"S. Campione, S. Liu, F. Capolino, I. Brener, M. Sinclair","doi":"10.1109/METAMATERIALS.2014.6948578","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948578","url":null,"abstract":"Dielectric resonators represent a promising path toward low loss metamaterials at optical frequencies. In this paper we describe a methodology for tailoring the design of metamaterial resonators as well as recovering their polarizibilies. Examples are provided spanning the range from an isolated resonator with designed scattering properties, to two- and three-dimensional metamaterial arrays exhibiting artificial magnetic properties.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"128 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":"115253990","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
Gap plasmon-based metasurfaces: From amplitude to phase control of reflected light 基于间隙等离子体的超表面:从反射光的振幅到相位控制
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948574
A. Pors, M. G. Nielsen, A. S. Roberts, S. Bozhevolnyi
{"title":"Gap plasmon-based metasurfaces: From amplitude to phase control of reflected light","authors":"A. Pors, M. G. Nielsen, A. S. Roberts, S. Bozhevolnyi","doi":"10.1109/METAMATERIALS.2014.6948574","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948574","url":null,"abstract":"We demonstrate how metal-insulator-metal configurations, in which the upper metal layer is periodically structured, allow for efficient control of the amplitude and phase of the reflected light, emphasizing the presence of gap-surface plasmon resonances and their connection to the optical response. Furthermore, we discuss applications of inhomogeneous meta-surfaces, ranging from subwavelength plasmonic color printing to unidirectional polarization-controlled excitation of surface plasmon polaritons.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"2 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":"116229755","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
Scattering engineering: From broadband cloaking and resonance effects, to embedded scattering eigenvalues in 3D nanostructures 散射工程:从宽带隐身和共振效应，到三维纳米结构中嵌入的散射特征值
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948652
F. Monticone, A. Alú
{"title":"Scattering engineering: From broadband cloaking and resonance effects, to embedded scattering eigenvalues in 3D nanostructures","authors":"F. Monticone, A. Alú","doi":"10.1109/METAMATERIALS.2014.6948652","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948652","url":null,"abstract":"Invisibility, resonant scattering and light trapping are among the most intriguing optical phenomena. Here, we show that these seemingly unrelated effects are tightly connected and can be tailored by suitably engineering the scattering response of composite nanoparticles. We demonstrate broadband cloaking and resonance effects, as well as embedded scattering eigenstates with infinite lifetime.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"55 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":"114604218","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
Near-field superdirectivity for coupled dimers of meta-atoms 元原子耦合二聚体的近场超指向性
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948672
A. Radkovskaya, L. Li, E. Edwards, D. Edwards, E. Shamonina, L. Solymar
{"title":"Near-field superdirectivity for coupled dimers of meta-atoms","authors":"A. Radkovskaya, L. Li, E. Edwards, D. Edwards, E. Shamonina, L. Solymar","doi":"10.1109/METAMATERIALS.2014.6948672","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948672","url":null,"abstract":"We present new results relating far-field and near-field superdirectivity for a dimer endfire array in which only one of the meta-atoms is excited. We deduce conditions for achieving superdirectivity in terms of structure parameters (distances between meta-atoms, their quality factors and the values of mutual coupling) and show that the required sets of parameters are different for far-field and near-field superdirectivity. Our results are relevant to medical imaging applications such as MRI and associated technologies.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"1 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":"127153917","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
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