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2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)最新文献

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Highly Efficient and Compact Magnet-Free Isolator Based on Time-Modulated Loops 基于时间调制环路的高效紧凑无磁隔离器
2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) Pub Date : 2020-09-27 DOI: 10.1109/Metamaterials49557.2020.9285154
S. Taravati, G. Eleftheriades
{"title":"Highly Efficient and Compact Magnet-Free Isolator Based on Time-Modulated Loops","authors":"S. Taravati, G. Eleftheriades","doi":"10.1109/Metamaterials49557.2020.9285154","DOIUrl":"https://doi.org/10.1109/Metamaterials49557.2020.9285154","url":null,"abstract":"This study introduces a highly efficient magnet-free isolator based on signal interference in time-modulated loops. The proposed isolator offers strong nonreciprocity. It also possesses a low profile architecture in comparison to other recently proposed space-time-modulated isolators. This is due to the fact that the it is not governed by unidirectional progressive coupling between the input signal and the space-time modulation signal where a long structure is required.","PeriodicalId":260995,"journal":{"name":"2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132552962","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
Valley-Hall Topological Transport in Graphene Plasmonic Crystal Waveguides 石墨烯等离子体晶体波导中的谷-霍尔拓扑输运
2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) Pub Date : 2020-09-27 DOI: 10.1109/Metamaterials49557.2020.9285067
J. You, Yupei Wang, N. Panoiu
{"title":"Valley-Hall Topological Transport in Graphene Plasmonic Crystal Waveguides","authors":"J. You, Yupei Wang, N. Panoiu","doi":"10.1109/Metamaterials49557.2020.9285067","DOIUrl":"https://doi.org/10.1109/Metamaterials49557.2020.9285067","url":null,"abstract":"Due to immunity to disorder and structural imperfections, topologically-protected plasmonic modes have recently attracted increasing attention. Here, we introduce two different mechanisms to construct valley-Hall domain-wall interface waveguides in graphene plasmonic crystal to mimic the quantum valley-Hall effect. In the first case, we break the in-plane spatial inversion symmetry of a single-layer graphene plasmonic crystal waveguide to achieve valley-Hall topological characteristics, whereas in the second case, we break the out-of-plane spatial inversion symmetry of a bi-layer graphene plasmonic crystal waveguide to implement the analog quantum valley-Hall effect. A molecular sensor based on this valley-Hall topological transport phenomenon is also be presented.","PeriodicalId":260995,"journal":{"name":"2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133864338","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
Achieving Electromagnetic Isolation by using Up- and Down-converting Time-Varying Metasurfaces 利用上下转换时变元表面实现电磁隔离
2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) Pub Date : 2020-09-27 DOI: 10.1109/Metamaterials49557.2020.9285032
D. Ramaccia, D. Sounas, A. Marini, A. Toscano, F. Bilotti
{"title":"Achieving Electromagnetic Isolation by using Up- and Down-converting Time-Varying Metasurfaces","authors":"D. Ramaccia, D. Sounas, A. Marini, A. Toscano, F. Bilotti","doi":"10.1109/Metamaterials49557.2020.9285032","DOIUrl":"https://doi.org/10.1109/Metamaterials49557.2020.9285032","url":null,"abstract":"In this contribution, we propose a magnet-less non-reciprocal isolating system based on time-varying metasurfaces. The system consists of a conventional frequency selective device placed between two time-varying metasurfaces, one for frequency up-conversion and one for down-conversion by the same amount. The overall reciprocity of the system is broken by exploiting the different scattering response from the embedded device when illuminated from opposite directions, since the two time-varying metasurface imparts an opposite frequency conversion for the two directions of illumination, but the transmitted fields are always the same as for the incident one, since the metasurfaces vanish the frequency conversion of each other. This strategy can be successfully exploited for conceiving a new family of non-reciprocal isolating systems starting from any conventional electromagnetic device.","PeriodicalId":260995,"journal":{"name":"2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134405839","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
Broadband Absorption Limits for Ultrathin Solar Cells 超薄太阳能电池的宽带吸收极限
2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) Pub Date : 2020-09-27 DOI: 10.1109/Metamaterials49557.2020.9284985
Aobo Chen, F. Monticone
{"title":"Broadband Absorption Limits for Ultrathin Solar Cells","authors":"Aobo Chen, F. Monticone","doi":"10.1109/Metamaterials49557.2020.9284985","DOIUrl":"https://doi.org/10.1109/Metamaterials49557.2020.9284985","url":null,"abstract":"Solar cells with very small thicknesses are advantageous for decreasing materials use and, thus, the total cost per area, but their performance unavoidably deteriorates as the thickness is reduced. Light-trapping techniques have been extensively used to enhance the power absorbed by thin-film solar cells, and their fundamental limits have been investigated in several works. Conversely, less attention has been devoted to the seemingly simpler problem of establishing physical bounds on absorption enhancement based on conventional anti-reflection coatings. In this work, we study such bounds on solar power absorption, over the whole solar spectrum, for ultrathin solar cells made of different materials and with antireflection coatings of arbitrary complexity. To this aim, we model the light reflection and absorption problem using impedance concepts and equivalent circuits, and then use the well-established Bode-Fano limits for broadband impedance matching to find the maximum possible absorption. Our results provide relevant insight on the maximum attainable absorption in ultra-thin solar cells without light-trapping, as well as on the performance of different absorbing materials in this context.","PeriodicalId":260995,"journal":{"name":"2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131247039","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 Methods for 3D Membrane Projection Lithography Metasurface Unit Cells 三维膜投影光刻超表面单元的设计方法
2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) Pub Date : 2020-09-27 DOI: 10.1109/Metamaterials49557.2020.9285106
E. Whiting, S. Campbell, D. Werner, P. Werner
{"title":"Design Methods for 3D Membrane Projection Lithography Metasurface Unit Cells","authors":"E. Whiting, S. Campbell, D. Werner, P. Werner","doi":"10.1109/Metamaterials49557.2020.9285106","DOIUrl":"https://doi.org/10.1109/Metamaterials49557.2020.9285106","url":null,"abstract":"Three dimensional metasurface structures hold the potential for better performing devices and interesting new properties. However, at optical frequencies it is very difficult to fabricate truly three dimensional designs. One of the most promising techniques is Membrane Projection Lithography (MPL), which can allow for dielectric and metallic inclusions to be deposited on the side wall of a cavity. However, the design process is difficult due to the large search space afforded by these 3D structures and the many coupling environments that arise between neighboring unit cells. Fortunately, advanced optimization techniques have been developed that allow for the space to be fully explored in an efficient manner for optimal designs.","PeriodicalId":260995,"journal":{"name":"2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132436422","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
Overcoming Mantle Cloaking Limits in Antenna Applications through Non-Linear Metasurfaces 利用非线性超表面克服天线应用中的斗篷限制
2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) Pub Date : 2020-09-27 DOI: 10.1109/Metamaterials49557.2020.9285019
S. Vellucci, A. Monti, M. Barbuto, M. Salucci, G. Oliveri, A. Toscano, F. Bilotti
{"title":"Overcoming Mantle Cloaking Limits in Antenna Applications through Non-Linear Metasurfaces","authors":"S. Vellucci, A. Monti, M. Barbuto, M. Salucci, G. Oliveri, A. Toscano, F. Bilotti","doi":"10.1109/Metamaterials49557.2020.9285019","DOIUrl":"https://doi.org/10.1109/Metamaterials49557.2020.9285019","url":null,"abstract":"In this contribution, the fundamental bounds that apply to low-scattering antennas are discussed and the use of non-linear cloaking metasurfaces is proposed to overcome them. Different power-dependent mantle cloak designs, which are able to dynamically transforming their effective geometry depending on the power level of the impinging field, are introduced. Their effectiveness is assessed in several antenna and array scenarios. This innovative approach may find applications in all those radiating systems in which a considerable difference between transmitted and received power levels is present.","PeriodicalId":260995,"journal":{"name":"2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115847824","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
Spacetime Metamaterials Perspectives 时空超材料透视
2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) Pub Date : 2020-09-27 DOI: 10.1109/Metamaterials49557.2020.9285025
Kasteelpark Arenberg
{"title":"Spacetime Metamaterials Perspectives","authors":"Kasteelpark Arenberg","doi":"10.1109/Metamaterials49557.2020.9285025","DOIUrl":"https://doi.org/10.1109/Metamaterials49557.2020.9285025","url":null,"abstract":"The paper presents the perspective of the author on the novel paradigm of spacetime metamaterials. It presents this emergent field as an extension of relativity physics and modulated-device engineering, and discusses the unprecedented opportunities that such metamaterials offer in terms of the simultaneous control of the spatial and temporal spectra of waves.","PeriodicalId":260995,"journal":{"name":"2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124346454","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
Retrieval of the Constitutive Parameters and Dispersion Relation of Glide-Symmetric Metamaterials via the Multimodal Transfer Matrix Method 基于多模态传递矩阵法的滑动对称超材料本构参数和色散关系的反演
2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) Pub Date : 2020-09-27 DOI: 10.1109/Metamaterials49557.2020.9285093
A. C. Escobar, J. P. del Risco, O. Quevedo–Teruel, F. Mesa, J. Baena
{"title":"Retrieval of the Constitutive Parameters and Dispersion Relation of Glide-Symmetric Metamaterials via the Multimodal Transfer Matrix Method","authors":"A. C. Escobar, J. P. del Risco, O. Quevedo–Teruel, F. Mesa, J. Baena","doi":"10.1109/Metamaterials49557.2020.9285093","DOIUrl":"https://doi.org/10.1109/Metamaterials49557.2020.9285093","url":null,"abstract":"We have implemented a method to retrieve the dispersion relation and the effective material constitutive parameters of a densely arranged periodic structure by solving an eigenvalue problem associated with the multimodal transfer matrix of the corresponding unit cell. The material parameters and the dispersion relation of a metasurface made of glide-symmetric square patches are here obtained with this method.","PeriodicalId":260995,"journal":{"name":"2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114308898","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
Theory and Application of Analytical Models for Thin-Wire Nanoloop Antennas 细线纳米环天线解析模型的理论与应用
2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) Pub Date : 2020-09-27 DOI: 10.1109/Metamaterials49557.2020.9285063
R. J. Chakv, D. Werner
{"title":"Theory and Application of Analytical Models for Thin-Wire Nanoloop Antennas","authors":"R. J. Chakv, D. Werner","doi":"10.1109/Metamaterials49557.2020.9285063","DOIUrl":"https://doi.org/10.1109/Metamaterials49557.2020.9285063","url":null,"abstract":"Full-wave modeling of plasmonic structures is a computationally expensive process since the electric field penetrates into the material. This modeling often requires volumetric meshing to fully resolve the electromagnetic interactions. As a result, analytical models are highly desirable in lieu of full-wave simulations. Though analytical models cannot be derived for all complex structures, an exact analytical model for nanoloop antennas has been recently developed. In addition to providing insight into the governing physics, this model enables rapid parametric studies and optimization capabilities greatly improving the design-cycle process. This paper presents a demonstration of the theory in the design of directive and reconfigurable loaded nanoloop antennas.","PeriodicalId":260995,"journal":{"name":"2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114367366","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
Millimeter-Wave Meta Cells Loaded Coplanar Transmission Line for Component Applications 毫米波元单元负载共面传输线元件应用
2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials) Pub Date : 2020-09-27 DOI: 10.1109/Metamaterials49557.2020.9285036
C. H. Joseph, D. Mencarelli, L. Pierantoni
{"title":"Millimeter-Wave Meta Cells Loaded Coplanar Transmission Line for Component Applications","authors":"C. H. Joseph, D. Mencarelli, L. Pierantoni","doi":"10.1109/Metamaterials49557.2020.9285036","DOIUrl":"https://doi.org/10.1109/Metamaterials49557.2020.9285036","url":null,"abstract":"In this work, a planar transmission line loaded with square shaped split ring resonator (SRR) metamaterials works around 150 GHz is modeled and validated by means of full-wave electromagnetic simulations. The transmission characteristics of such a transmission line is reported. The SRR loaded coplanar waveguide (CPW) structure exhibits stop band characteristics in response to the resonance of the inductively coupled SRR rings excited by the magnetic fluxes through the rings. A parametric analysis of the rings and arrays of SRRs carried out to predict the behavior of the meta cells loaded transmission line. Since these metamaterials are much smaller than the feeding signal wavelength, these metamaterials loaded transmission lines are potentially useful to optimize size and quality factor of millimeter-wave circuit components and radiating elements.","PeriodicalId":260995,"journal":{"name":"2020 Fourteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116894557","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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