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2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)最新文献

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Leaky modes of domino nanoparticles and their light-trapping implications 多米诺纳米粒子的泄漏模式及其光捕获意义
2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2016-11-16 DOI: 10.1109/METAMATERIALS.2016.7746412
P. Voroshilov, C. Simovski
{"title":"Leaky modes of domino nanoparticles and their light-trapping implications","authors":"P. Voroshilov, C. Simovski","doi":"10.1109/METAMATERIALS.2016.7746412","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746412","url":null,"abstract":"Previously, we have revealed an efficient light trapping performed by arrays of cross-like substantially thick metal nanoantennas. This light trapping implied a broad spectrum of solar light concentrated in a subwavelength depth of the semiconductor substrate. In this review paper, we show that our arrays support so-called leaky domino-modes, responsible for the broadband resonant absorption in the substrate. We have thoroughly studied the main properties of these modes, which turned out to be very unusual for the optical frequency range.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83665451","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
Homogenization of sound hard metamaterials in the time domain 声硬超材料的时域均匀化
2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2016-09-17 DOI: 10.1109/METAMATERIALS.2016.7746495
A. Maurel, J. Marigo, B. Lombard
{"title":"Homogenization of sound hard metamaterials in the time domain","authors":"A. Maurel, J. Marigo, B. Lombard","doi":"10.1109/METAMATERIALS.2016.7746495","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746495","url":null,"abstract":"We present a homogenization method based on a matched asymptotic expansion technique for sound hard materials structured at subwavelength scale. Considering the wave equation in the time domain, jump conditions are derived for the acoustic pressure and the normal velocity across an equivalent interface with non zero thickness. These jump conditions are implemented in a numerical scheme and compared to the results of the direct problem.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82059114","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
Antenna-based carpet cloak: A possible frequency and angular broadband cloaking technique 基于天线的地毯斗篷:一种可能的频率和角度宽带隐身技术
2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2016-09-01 DOI: 10.1109/METAMATERIALS.2016.7746399
A. Tobia, D. Ramaccia, A. Toscano, F. Bilotti
{"title":"Antenna-based carpet cloak: A possible frequency and angular broadband cloaking technique","authors":"A. Tobia, D. Ramaccia, A. Toscano, F. Bilotti","doi":"10.1109/METAMATERIALS.2016.7746399","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746399","url":null,"abstract":"In this contribution, we discuss a possible antenna-based cloak for overcoming the intrinsic narrow frequency and angular bandwidths of conventional metasurface-based cloaks. The idea is to use a fully passive antenna array to mimic the reflection from a ground plane even in presence of an electrically large metallic bump. Here, a triangular bump over a ground plane is cloaked covering both sides by a pair of conventional half-wavelength dipole arrays. Inspired by the Van Atta array configuration, we connect the antenna elements on one side to the other in order to restore the phase fronts as the bump were not present. The performances have been numerically evaluated, showing the ability of the proposed setup to mimic the reflection from a ground plane over the frequency operation band of the antenna elements. Wide angular bandwidth is achieved thanks to the self-adaptive nature of the proposed configuration.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75676189","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: 10
Effect of retardation on surface-enhanced Raman optical activity 缓阻对表面增强拉曼光学活性的影响
2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2016-09-01 DOI: 10.1109/METAMATERIALS.2016.7746413
T. Wu, X. Zhang
{"title":"Effect of retardation on surface-enhanced Raman optical activity","authors":"T. Wu, X. Zhang","doi":"10.1109/METAMATERIALS.2016.7746413","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746413","url":null,"abstract":"We extend Bour's work by taking the retardation effect of the incident plane wave into consideration. We find this effect is crucial in simulating surface-enhanced Raman optical activity (SEROA). According to our numerical calculation, ignoring this retardation effect results in the calculated SEROA intensities much weaker than those without the approximation.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76131616","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
Influence of metamaterial surface impedance on patch antenna coupling 超材料表面阻抗对贴片天线耦合的影响
2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2016-09-01 DOI: 10.1109/METAMATERIALS.2016.7746483
A. Kukharenko, A. Yelizarov
{"title":"Influence of metamaterial surface impedance on patch antenna coupling","authors":"A. Kukharenko, A. Yelizarov","doi":"10.1109/METAMATERIALS.2016.7746483","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746483","url":null,"abstract":"A method of antenna element coupling control using a readjust of the surface impedance of the plane, it is mounted, is shortly described. A construction of a tunable frequency-selective metamaterial-made surface, which is designed to be a patch antenna element ground plane, is presented. Results of antenna VSWR measurements, which show the coupling change correspondingly the antenna ground plane surface impedance tuning, are shown.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85957805","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
A dual-frequency MRI coil for small animal imaging at 7 Tesla based on metamaterial-inspired wire structures 基于超材料启发线结构的7特斯拉小动物成像双频MRI线圈
2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2016-09-01 DOI: 10.1109/METAMATERIALS.2016.7746502
A. Nikulin, S. Glybovski, I. Melchakova, P. Belov, S. Enoch, R. Abdeddaim
{"title":"A dual-frequency MRI coil for small animal imaging at 7 Tesla based on metamaterial-inspired wire structures","authors":"A. Nikulin, S. Glybovski, I. Melchakova, P. Belov, S. Enoch, R. Abdeddaim","doi":"10.1109/METAMATERIALS.2016.7746502","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746502","url":null,"abstract":"In this contribution we propose and test a new design of radio frequency coils for imaging of small animals in 7T MRI. The proposed coils take advantage of periodic structures composed of thin printed metal strips, which can be efficiently excited by a small loop feed at multiple frequencies. This effect is attributed to a strong coupling between the loop and hybridized eigenmodes of the wire structure. By numerical simulations it was shown that the proposed approach provides dual-frequency impedance matching at 282.6 and 300.1 MHz, which is required for molecular 19F and 1H imaging at 7 Tesla to reach a sufficient signal-to-noise ratio.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78068636","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
Effective diamagnetic behavior of 2D periodic and binary magnetic systems 二维周期和二元磁性体系的有效抗磁性行为
2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2016-09-01 DOI: 10.1109/METAMATERIALS.2016.7746425
R. Zivieri
{"title":"Effective diamagnetic behavior of 2D periodic and binary magnetic systems","authors":"R. Zivieri","doi":"10.1109/METAMATERIALS.2016.7746425","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746425","url":null,"abstract":"It is shown that two-dimensional periodic magnetic systems with in-plane magnetization composed by a mixture of ferromagnetic materials have an effective diamagnetic behavior. Because of the formation of effective “surface magnetic charges” resulting from the magnetization contrast at the boundary between the two ferromagnetic materials, the demagnetizing field is parallel to the in-plane external magnetic field in some regions of the unit cell. Some examples of real systems exhibiting this behavior are given. The effective diamagnetic properties in a periodic mixture of ferromagnetic materials allow to describe periodic magnetic systems as metamaterials.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78904154","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
Depolarization of mechanical waves by elastodynamic metasurface 弹性动力超表面对机械波的去极化
2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2016-09-01 DOI: 10.1109/METAMATERIALS.2016.7746383
L. Schwan, C. Boutin, M. Dietz
{"title":"Depolarization of mechanical waves by elastodynamic metasurface","authors":"L. Schwan, C. Boutin, M. Dietz","doi":"10.1109/METAMATERIALS.2016.7746383","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746383","url":null,"abstract":"While the manipulation of wave polarization is commonplace in electromagnetism, the physical means to do so in homogeneous elastic media used to remain an open question. Here, we report the concept of micro-structured surfaces with inner resonance in the field of elastodynamics. Such a metasurface can tune the boundary conditions at specific frequencies and achieve the depolarization of mechanical waves without introducing heterogeneities in the medium itself. The principle relies on the anisotropic behaviour of an array of resonators with deep-subwavelength spacing: The localization of Bragg interferences in a boundary layer enables to homogenize the resonant array into an unconventional surface impedance, the frequency-dependence and anisotropy of which lead to depolarization. The concept of elastodynamic metasurfaces is put into practice experimentally and results bear testament to its efficacy and robustness to control the polarization of reflected waves. Such metasurfaces are easily realized, analytically predictable, and very adjustable, opening new possibilities in vibration control and tomography techniques, from nano- to geophysical scale.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87896629","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
Nanoresotron - novel concept of optical nanoantenna excitation through the dissipative instability of DC current 纳米调控管是利用直流电流的耗散不稳定性来激发光学纳米天线的新概念
2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2016-09-01 DOI: 10.1109/METAMATERIALS.2016.7746392
I. Smetanin, A. Bouhelier, I. Protsenko, A. Uskov
{"title":"Nanoresotron - novel concept of optical nanoantenna excitation through the dissipative instability of DC current","authors":"I. Smetanin, A. Bouhelier, I. Protsenko, A. Uskov","doi":"10.1109/METAMATERIALS.2016.7746392","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746392","url":null,"abstract":"We propose a novel physical mechanism for the excitation of optical nanoantenna which utilizes the dissipative instability of DC electric current in the quantum well. Realization of this approach in nanoplasmonics can lead to a new device - nanoresotron.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90336200","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
Ultrathin carpet cloak based on ring resonators 基于环形谐振器的超薄地毯斗篷
2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2016-09-01 DOI: 10.1109/METAMATERIALS.2016.7746505
B. Orazbayev, N. Estakhri, M. Beruete, A. Alú
{"title":"Ultrathin carpet cloak based on ring resonators","authors":"B. Orazbayev, N. Estakhri, M. Beruete, A. Alú","doi":"10.1109/METAMATERIALS.2016.7746505","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746505","url":null,"abstract":"In this work the design of an ultrathin carpet cloak based on a metasurface with ring resonators is demonstrated. The scattering from a triangular bump of a Gaussian beam is suppressed by manipulating the reflection phase along the edge of the bump. This is achieved by an array of closed ring resonators with varying radii. The object to hide can be placed under the bump on a flat ground plane. The performance of the designed cloak in the near field and far field is numerically analyzed at the operation frequency and the successful concealing of the bump is confirmed. The presented cloak has a thin, lightweight design and can find applications in radar and antenna systems.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88921713","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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