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

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Novel meta-surfaces for the design of broadband highly directive antennas 宽带高定向天线设计的新型元曲面
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948635
K. Konstantinidis, A. Feresidis
{"title":"Novel meta-surfaces for the design of broadband highly directive antennas","authors":"K. Konstantinidis, A. Feresidis","doi":"10.1109/METAMATERIALS.2014.6948635","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948635","url":null,"abstract":"Novel meta-surfaces for designing broadband highly directive Fabry-Perot type antennas are presented. The proposed structure is based on novel optimized multi-layer periodic surfaces that create multiple sub-wavelength cavities with enhanced bandwidth performance. Two double-layer periodic arrays of dissimilar dimensions are designed and optimized, each double-layer array consisting of an Artificial Magnetic Conductor (AMC) and a Partially Reflective Surface (PRS) printed on either side of a dielectric substrate. The two double-layer metasurfaces are placed at about quarter wavelength from a ground plane and from each other. An antenna of 18.3dBi directivity and 8% 3-dB radiation bandwidth is obtained.","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":"129908076","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 to select waveforms at the same frequency 元表面，以选择相同频率的波形
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948677
H. Wakatsuchi, J. Rushton, S. Kim, D. Sievenpiper
{"title":"Metasurfaces to select waveforms at the same frequency","authors":"H. Wakatsuchi, J. Rushton, S. Kim, D. Sievenpiper","doi":"10.1109/METAMATERIALS.2014.6948677","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948677","url":null,"abstract":"We present a new concept of metasurfaces that vary the electromagnetic responses depending not only on the frequency of an incoming surface wave but also on the waveform. Such waveform selectivity is achieved by integrating the rectification of schottky diodes with time domain responses of capacitors and inductors. This new characteristic enables us to control electromagnetic waves a new manner, thus potentially leading to development of new electromagnetic techniques and applications.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"3 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":"120846006","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
Hot electron photoemission from plasmonic nanoparticles: Role of transient absorption in surface mechanism 等离子体纳米粒子的热电子光发射:瞬态吸收在表面机制中的作用
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948547
A. Uskov, I. Protsenko, R. Ikhsanov, Viktoriia E. Babicheva, S. Zhukovsky, A. Lavrinenko, E. O’Reilly, Hongxing Xu
{"title":"Hot electron photoemission from plasmonic nanoparticles: Role of transient absorption in surface mechanism","authors":"A. Uskov, I. Protsenko, R. Ikhsanov, Viktoriia E. Babicheva, S. Zhukovsky, A. Lavrinenko, E. O’Reilly, Hongxing Xu","doi":"10.1109/METAMATERIALS.2014.6948547","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948547","url":null,"abstract":"We analyze and compare surface- and volume-based internal photoelectric effects from spherical nanoparticles, obtaining analytical expressions for the photoemission rate in both cases. Similar to results for a flat metal surface, one can show that the surface mechanism prevails, since it is unaffected by detrimental hot electron collisions. Transient absorption results from dielectric permittivity discontinuity at the nanoparticle boundary and leads to a substantial (by ~5 times) increase of the photoelectron emission rate.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"22 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":"121515543","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
Realization of a voltage tunable gradient-index fishnet loaded with liquid crystal 液晶负载电压可调梯度折射率渔网的实现
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948644
M. Maasch, M. Roig, C. Damm, R. Jakoby
{"title":"Realization of a voltage tunable gradient-index fishnet loaded with liquid crystal","authors":"M. Maasch, M. Roig, C. Damm, R. Jakoby","doi":"10.1109/METAMATERIALS.2014.6948644","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948644","url":null,"abstract":"The realization of voltage tunable gradient-index fishnet metamaterials for the Ka- and mm-band is presented. For the dielectric layer of the fishnet, nematic liquid crystal is used to achieve a continuous voltage tuning of each column of the array. To control the direction of the emitted wave, a gradient in the phase profile over the aperture is introduced. Simulation and measurement results are presented for a prototype at a frequency of 27.5 GHz with a beam scanning range of ±5° as well as a design for a frequency of 329 GHz with arbitrary scan angles.","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":"130977157","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
Floquet-Bloch vs. Nicolson-Ross-Weir extraction for magneto-dielectric Bragg stacks 磁介质Bragg堆叠的Floquet-Bloch与Nicolson-Ross-Weir提取
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948603
Niels-Erik Clausen, S. Arslanagić, O. Breinbjerg
{"title":"Floquet-Bloch vs. Nicolson-Ross-Weir extraction for magneto-dielectric Bragg stacks","authors":"Niels-Erik Clausen, S. Arslanagić, O. Breinbjerg","doi":"10.1109/METAMATERIALS.2014.6948603","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948603","url":null,"abstract":"We extract and compare the permittivity and permeability from a dielectric and a magneto-dielectric Bragg stack with the Floquet-Bloch (FB) method for the infinite stack and the Nicolson-Ross-Weir (NRW) method for the finite stack. While the extracted propagation constants are identical, the wave impedances are different. Moreover, the NRW method yields magnetic effects for the dielectric Bragg stack, while the FB method gives the expected vacuum permeability, also in the bandgab.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"41 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":"123269381","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
Tuning ZOR in ENZ waveguide using a single longitudinal slot and equivalent circuit parameter extraction 利用单纵槽和等效电路参数提取对ENZ波导中的ZOR进行调谐
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948676
N. Vojnović, B. Jokanović, M. Mitrovic, F. Mesa, F. Medina
{"title":"Tuning ZOR in ENZ waveguide using a single longitudinal slot and equivalent circuit parameter extraction","authors":"N. Vojnović, B. Jokanović, M. Mitrovic, F. Mesa, F. Medina","doi":"10.1109/METAMATERIALS.2014.6948676","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948676","url":null,"abstract":"In this paper, the effects of placing a longitudinal slot in the channel region of a rectangular waveguide ENZ structure, are analyzed. A following investigation showed that changing the length of this slot can be employed to achieve tuning of only the tunneling frequency. Maximum resonant frequency shift reported is 11%. In addition, the equivalent circuit for the ENZ structure with this kind of slot configuration was derived with an excellent agreement between numerical and full-wave simulations.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"58 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":"116888592","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
Multi-periodicity induces prominent optical phenomena in plasmonic multilayers 多周期性在等离子体多层中引起了突出的光学现象
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948570
A. Orlov, A. K. Krylova, S. Zhukovsky, Viktoriia E. Babicheva, P. Belov
{"title":"Multi-periodicity induces prominent optical phenomena in plasmonic multilayers","authors":"A. Orlov, A. K. Krylova, S. Zhukovsky, Viktoriia E. Babicheva, P. Belov","doi":"10.1109/METAMATERIALS.2014.6948570","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948570","url":null,"abstract":"We introduce multi-periodicity in plasmonic multilayers and develop a general theory for the description of their eigenwaves. We define the order of multi-periodicity as the number of different kinds of plasmonic interfaces present in the multilayer, and investigate the optical effects that arise as this order increases from one (simple periodic multilayers) to two (bi-periodic multilayers) and beyond. For example, we show the formation of additional photonic bands, multi-refringence of p-polarized light, Dirac and mixed states.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"25 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":"114056844","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
Rigorous time-domain graphene representation as a surface boundary condition 作为表面边界条件的严格时域石墨烯表示
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948626
S. Amanatiadis, N. Kantartzis
{"title":"Rigorous time-domain graphene representation as a surface boundary condition","authors":"S. Amanatiadis, N. Kantartzis","doi":"10.1109/METAMATERIALS.2014.6948626","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948626","url":null,"abstract":"The present work introduces the explicit modelling of graphene in the time domain, defined by its surface conductivity, as a surface boundary condition via an efficient 2D transverse electric FDTD formulation, derived directly from Maxwell's equations. The analysis is conducted at the far-infrared regime and the proposed method is validated by comparing its results with the theoretical propagation properties of the surface waves, supported onto graphene.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"51 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":"114268309","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
Focusing millimetre waves by means of a permittivity-near zero narrow-waveguide lens 利用介电常数接近于零的窄波导透镜聚焦毫米波
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948658
V. Pacheco-Peña, V. Torres, B. Orazbayev, M. Beruete, M. Navarro‐Cía, N. Engheta
{"title":"Focusing millimetre waves by means of a permittivity-near zero narrow-waveguide lens","authors":"V. Pacheco-Peña, V. Torres, B. Orazbayev, M. Beruete, M. Navarro‐Cía, N. Engheta","doi":"10.1109/METAMATERIALS.2014.6948658","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948658","url":null,"abstract":"An epsilon-near zero (ENZ) plano-concave lens is designed, numerically studied and experimentally demonstrated at millimeter-waves. The metallic lens is synthesized by an array of stacked narrow hollow rectangular waveguides working near cutoff emulating an ENZ medium. At the working frequency (f0 = 144 GHz, λ0 = 2.08 mm) the focusing properties of the lens demonstrate an experimental transmission power enhancement of 15.9 dB with a good impedance matching with free space.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"265 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":"122698663","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
Dynamic beam steering properties of an electrically tuned liquid crystal based CRLH leaky wave antenna 电调谐液晶CRLH漏波天线的动态波束转向特性
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948665
M. Roig, M. Maasch, C. Damm, R. Jakoby
{"title":"Dynamic beam steering properties of an electrically tuned liquid crystal based CRLH leaky wave antenna","authors":"M. Roig, M. Maasch, C. Damm, R. Jakoby","doi":"10.1109/METAMATERIALS.2014.6948665","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948665","url":null,"abstract":"A continuously electrically tunable composite right/left-handed leaky-wave antenna based on liquid crystal is presented. Beam steering from -6° to 9° with respect to the broadside at a fixed operation frequency of 26.7 GHz is achieved by applying a tuning voltage between 0 V and 120 V. Far field measurements and the response times of the liquid crystal for this specific application are analyzed in detail.","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":"123161669","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: 14
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