{"title":"Wave propagation in poro-elastic materials using a shifted cell method for theory of Biot","authors":"S. Ahsan, E. Deckers, C. Claeys, W. Desmet","doi":"10.1109/MetaMaterials.2019.8900854","DOIUrl":"https://doi.org/10.1109/MetaMaterials.2019.8900854","url":null,"abstract":"In this paper, we propose a weak formulation for the Biot theory of poro-elastic materials to calculate the dispersion properties of non-trivial realization of porous material. This formulation considers the periodicity within the field variables which are solid displacements and pressure in pores, resulting in a quadratic eigenvalue problem in terms of wavenumber.","PeriodicalId":395568,"journal":{"name":"2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115359315","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}
{"title":"A gyro-elastic device for cloaking of elastic waves in micro-structured materials","authors":"M. Garau, Michael Nieves, G. Carta, M. Brun","doi":"10.1109/MetaMaterials.2019.8900841","DOIUrl":"https://doi.org/10.1109/MetaMaterials.2019.8900841","url":null,"abstract":"The design of a structured gyro-elastic system capable of being used as a cloaking device for a discrete medium is discussed. The efficiency of the gyro-elastic cloak, composed of springs connecting periodically placed masses, attached to gyroscopic spinners, is examined in the transient regime. An important effect encountered shows that the speed of the reconstructed field can be altered by tuning the gyroscopes.","PeriodicalId":395568,"journal":{"name":"2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115123614","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}
{"title":"Design of a Compact and Multifunctional Radiating Structure exploiting the Mantle Cloaking Technique","authors":"F. Andreaus, M. Barbuto","doi":"10.1109/MetaMaterials.2019.8900811","DOIUrl":"https://doi.org/10.1109/MetaMaterials.2019.8900811","url":null,"abstract":"In this contribution, we investigate the possibility to apply the mantle cloaking technique to radiation platforms consisting of a combination of different antenna types. More specifically, we consider the challenging case of a half-wavelength dipole working in close electrical proximity to an Archimedean spiral slot antenna. We show that by covering the dipole with a suitable cloaking metasurface, it is possible to significantly reduce its blockage on the Archimedean antenna and make it work as if it were isolated. We also show that the same system can be engineered to exploit the aperture antenna as a reflector for the dipole that, thus, can operate as a standard sector antenna. This cloaking application is confirmed by realistic full-wave numerical simulations.","PeriodicalId":395568,"journal":{"name":"2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115504281","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}
{"title":"Active Metasurfaces as a Platform for CapacitiveWireless Power Transfer Supporting Multiple Receivers","authors":"Fu Liu, P. Jayathurathnage, S. Tretyakov","doi":"10.1109/MetaMaterials.2019.8900808","DOIUrl":"https://doi.org/10.1109/MetaMaterials.2019.8900808","url":null,"abstract":"As wireless power transfer (WPT) repeaters, metasurfaces can enhance field coupling, improving the WPT operation. In this paper, we show that metasurfaces can also be used as transmitters of capacitive WPT systems. Such a metasurface-based WPT system can feed multiple receivers and provide robust operation against load or position variations. We formulate an analytical model of such WPT systems. We also discuss the exact solution of a particular example with N identical receivers.","PeriodicalId":395568,"journal":{"name":"2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115657285","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}
{"title":"Wide Band Polarization Converter Graphene Metasurface for Mid-Infrared Band","authors":"Ahmed A. Abdel Aziz, A. Ibrahim, M. Abdalla","doi":"10.1109/MetaMaterials.2019.8900929","DOIUrl":"https://doi.org/10.1109/MetaMaterials.2019.8900929","url":null,"abstract":"Wide band, insensitive incidence angle graphene metasurface for polarization conversion is introduced in this work. A high Polarization Conversion Ratio (PCR) is verified in Mid-Infrared band by using a graphene as an upper conductor for metasurface. The metasurface construction is composed of a single layer of graphene, which has a half ring slots with rectangular slot connecting between them while the whole shape is rotated with 45°. Silicon dioxide substrate is used with a metal backed ground. The simulation results of the proposed metasurface indicate that a linearly polarized incident wave is converted to a circular polarized one over more than one THz along the Mid-Infrared frequency band. PCR has a maximum value of approximately 98% at 1.45 THz. The polarization conversion ratio is studied for different angles of incidence, with stable value for a wide range of incident angles.","PeriodicalId":395568,"journal":{"name":"2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115758952","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}
{"title":"Electromagnetic waves through metamaterial superlattices","authors":"P. Pereyra, F. Assaoui","doi":"10.1109/MetaMaterials.2019.8900798","DOIUrl":"https://doi.org/10.1109/MetaMaterials.2019.8900798","url":null,"abstract":"We present new results of the transmission coefficients and phase times of metamaterial superlattices, built of alternating layers of left and right handed materials. We show that for certain relations of the metamaterial-superlattice parameters, the bands of the transmission coefficients become a sequence of isolated and equidistant peaks with negative phase times. We show also that the space-time evolution of a Gaussian wave packet, with centroid at any of these peaks, agrees with the theoretical predictions and no violation of the causality principle occurs.","PeriodicalId":395568,"journal":{"name":"2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116319906","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}
W. Zhang, D. Sylgacheva, P. Kapralov, Y. Song, V. Belotelov
{"title":"Cavity Enhanced Transverse Magneto-optical Kerr Effect of AlAAO Based Nanostructure Arrays","authors":"W. Zhang, D. Sylgacheva, P. Kapralov, Y. Song, V. Belotelov","doi":"10.1109/MetaMaterials.2019.8900931","DOIUrl":"https://doi.org/10.1109/MetaMaterials.2019.8900931","url":null,"abstract":"In this work, reflectance and transverse magneto-optical Kerr effects (TMOKE) were investigated in Py (permalloy) and PyTa nanostructures deposited on the anodic aluminum oxide (AAO) template based on aluminum substrate (AlAAO) via a magnetron sputtering method. It is demonstrated that the increase of TMOKE near reflectance minimum can be tuned by the AAO membrane diameter, and the TMOKE intensity can be enhanced once the Ta layer was introduced, elucidated by influence of high spin-orbit coupling in Ta on TMOKE. This proposed nanostructure conveys a new pathway in the design of advanced magneto-optical devices for optoelectronic and magneto-optical applications.","PeriodicalId":395568,"journal":{"name":"2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116437147","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}
{"title":"The Accurate Mathematic Model Based on 2×2-Matrix for Anisotropic Photonic Crystals with Metamaterial Layers","authors":"K. Vytovtov, E. Barabanova, V. Vishnevskiy","doi":"10.1109/MetaMaterials.2019.8900820","DOIUrl":"https://doi.org/10.1109/MetaMaterials.2019.8900820","url":null,"abstract":"The mathematic model of wave behavior within photonic crystal with anisotropic metamaterial layers based on 2×2 translation matrix is presented for the first time. The numerical calculations and result comparison with well-known 4×4 matrix methods are given also. It is proved also that the layer change theorem is valid for an anisotropic photonic crystal.","PeriodicalId":395568,"journal":{"name":"2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121394939","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}
{"title":"Wideband skewed grid frequency selective surface absorber for oblique incidence","authors":"Yulu Zhang, Jianjun Jiang","doi":"10.1109/MetaMaterials.2019.8900855","DOIUrl":"https://doi.org/10.1109/MetaMaterials.2019.8900855","url":null,"abstract":"We present a wideband frequency selective surface (FSS) absorber for oblique incidence. The absorber structure with anisotropic elements exhibits different impedances in two polarizations to match free space characteristic impedance at oblique incidence, thus resulting in a low microwave reflectivity over a wideband range. The grating lobe is suppressed by the use of skewed grid. Simulation and measurement results all illustrate that the reflectivity covers a broad band of 1.35-4.0 GHz below −10 dB for both TE and TM polarizations at an incident angle of 45°.","PeriodicalId":395568,"journal":{"name":"2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122988219","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}
{"title":"Broadband Dielectric Metasurfaces Using Ceramic Stereolithography","authors":"S. Young, L. Szymanski, A. Grbic","doi":"10.1109/MetaMaterials.2019.8900904","DOIUrl":"https://doi.org/10.1109/MetaMaterials.2019.8900904","url":null,"abstract":"A broadband half-wave plate is demonstrated based on cascaded alumina/air subwavelength gratings. Stacked subwavelength gratings can be well-approximated by homogeneous anistropic layers, permitting analysis by plane wave transfer matrix techniques and rapid design optimization. The example waveplate, fabricated using ceramic stereolithography, shows broadband phase performance and low loss over the Ka frequency band (26.5 – 40 GHz). Analytic calculations show excellent agreement with measured reflection coefficients, validating the design approach.","PeriodicalId":395568,"journal":{"name":"2019 Thirteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128764127","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}