Pub Date : 2016-09-01DOI: 10.1109/METAMATERIALS.2016.7746461
J. Lončar, S. Hrabar
Although numerous papers have been published in the area of parity-time symmetric systems recently, stability of those systems has only started to be explored. This study reports stability analysis of previously proposed parity-time symmetric system model based on mixed lumped/distributed network by finding pole locations in complex frequency domain.
{"title":"Stability of metasurface-based parity-time symmetric systems","authors":"J. Lončar, S. Hrabar","doi":"10.1109/METAMATERIALS.2016.7746461","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746461","url":null,"abstract":"Although numerous papers have been published in the area of parity-time symmetric systems recently, stability of those systems has only started to be explored. This study reports stability analysis of previously proposed parity-time symmetric system model based on mixed lumped/distributed network by finding pole locations in complex frequency domain.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"27 1","pages":"130-132"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89912099","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}
Pub Date : 2016-09-01DOI: 10.1109/METAMATERIALS.2016.7746486
O. Takayama, E. Shkondin, M. E. Aryaee Panah, T. Repan, R. Malureanu, F. Jensen, A. Lavrinenko
We analyze surface electromagnetic waves supported at the interface between isotropic medium and effective anisotropic material that can be realized by alternating conductive and dielectrics layers. This configuration can host various types of surface waves and therefore can serve as a rich platform for applications of surface photonics. Most of these surface waves are directional and as such their propagation can be effectively controlled by wavelength or material parameters tuning.
{"title":"Surface waves on metamaterials interfaces","authors":"O. Takayama, E. Shkondin, M. E. Aryaee Panah, T. Repan, R. Malureanu, F. Jensen, A. Lavrinenko","doi":"10.1109/METAMATERIALS.2016.7746486","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746486","url":null,"abstract":"We analyze surface electromagnetic waves supported at the interface between isotropic medium and effective anisotropic material that can be realized by alternating conductive and dielectrics layers. This configuration can host various types of surface waves and therefore can serve as a rich platform for applications of surface photonics. Most of these surface waves are directional and as such their propagation can be effectively controlled by wavelength or material parameters tuning.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"7 1","pages":"199-201"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90235866","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}
Pub Date : 2016-09-01DOI: 10.1109/METAMATERIALS.2016.7746403
N. Tsitsas
Plane wave scattering by a dielectric slab on which has been etched an infinitely periodic metamaterial grating is analyzed by means of semi-analytical integral equation techniques. The grating slab's operation as a frequency filter as well as the effect of the grating's parameters on the diffracted fields are investigated for a grating composed of an epsilon-near-zero (ENZ) material.
{"title":"Efficient integral equation analysis of scattering by a metamaterial grating assisted slab","authors":"N. Tsitsas","doi":"10.1109/METAMATERIALS.2016.7746403","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746403","url":null,"abstract":"Plane wave scattering by a dielectric slab on which has been etched an infinitely periodic metamaterial grating is analyzed by means of semi-analytical integral equation techniques. The grating slab's operation as a frequency filter as well as the effect of the grating's parameters on the diffracted fields are investigated for a grating composed of an epsilon-near-zero (ENZ) material.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"17 1","pages":"370-372"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83788471","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}
Pub Date : 2016-09-01DOI: 10.1109/METAMATERIALS.2016.7746423
A. Zhukov, M. Ipatov, V. Zhukova
We studied Giant magnetoimpedance (GMI) effect and magnetic properties of various Co-rich amorphous microwires. We measured magnetic field dependences of the GMI ratio up to GHz frequency range and observed quite high GMI ratio in studied thin magnetic microwires even at GHz frequencies. We observed different values of the magnetic anisotropy field obtained from the hysteresis loops and the impedance curves. Observed dependences can be explained considering different magnetic anisotropy in the surface layers and in the inner part of metallic nucleus and skin depth effect. Features of high frequency GMI effect have been analyzed using FMR-like approximation.
{"title":"Studies of Giant magnetoimpedance effect in soft magnetic microwires at GHz frequencies","authors":"A. Zhukov, M. Ipatov, V. Zhukova","doi":"10.1109/METAMATERIALS.2016.7746423","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746423","url":null,"abstract":"We studied Giant magnetoimpedance (GMI) effect and magnetic properties of various Co-rich amorphous microwires. We measured magnetic field dependences of the GMI ratio up to GHz frequency range and observed quite high GMI ratio in studied thin magnetic microwires even at GHz frequencies. We observed different values of the magnetic anisotropy field obtained from the hysteresis loops and the impedance curves. Observed dependences can be explained considering different magnetic anisotropy in the surface layers and in the inner part of metallic nucleus and skin depth effect. Features of high frequency GMI effect have been analyzed using FMR-like approximation.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"103 1","pages":"424-426"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83058474","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}
Pub Date : 2016-09-01DOI: 10.1109/METAMATERIALS.2016.7746385
T. Weisser, J. Groby, O. Dazel, L. Schwan
The acoustic behaviour of a metaporous materials constituted of resonant elastic shells embedded in a poro-elastic matrix is reported. The acoustic plane wave reflection from such an elastic-framed metaporous layer glued against rigid backing is studied. The analysis is performed by applying the multiple scattering theory in a dissipative Biot continuum while accounting for the fields scattered by the inclusion at the layer plane boundaries. It is shown that high broadband absorption of sound is achieved through the coupling of resonances of both the array and the shells with visco-thermal and elastic losses in the poro-elastic matrix. Moreover, the excitation of flexural resonances of the shells enable high-quality absorption of sound in the deep subwavelength regime. The semi-analytical approach of these multi-physical phenomena underlines the complex interactions between the scatterers and the poroelastic matrix, and allows the efficient computation of the fields.
{"title":"High broadband absorption of acoustic waves by elastic-framed metaporous layer","authors":"T. Weisser, J. Groby, O. Dazel, L. Schwan","doi":"10.1109/METAMATERIALS.2016.7746385","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746385","url":null,"abstract":"The acoustic behaviour of a metaporous materials constituted of resonant elastic shells embedded in a poro-elastic matrix is reported. The acoustic plane wave reflection from such an elastic-framed metaporous layer glued against rigid backing is studied. The analysis is performed by applying the multiple scattering theory in a dissipative Biot continuum while accounting for the fields scattered by the inclusion at the layer plane boundaries. It is shown that high broadband absorption of sound is achieved through the coupling of resonances of both the array and the shells with visco-thermal and elastic losses in the poro-elastic matrix. Moreover, the excitation of flexural resonances of the shells enable high-quality absorption of sound in the deep subwavelength regime. The semi-analytical approach of these multi-physical phenomena underlines the complex interactions between the scatterers and the poroelastic matrix, and allows the efficient computation of the fields.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"112 1","pages":"322-324"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90306541","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}
Pub Date : 2016-09-01DOI: 10.1109/METAMATERIALS.2016.7746415
J. Xu, Hao Chi Zhang, T. Cui
We propose a method for decoupling of spoof plasmon-polaritons (SPPs) which are highly confined on two anti-parallel ultra thin corrugated strips. Periodic reversal of cross linking element between the two parallel pair, which can ensuring the continuity of the transmission waveguide and results in a π -phase shifting with the adjacent inversion units. At the junction between adjacent cells, periodic discontinuity of structure can be viewed as a perturbation to generate space harmonic, generating a mixed mode is operation in its leaky-wave region, thereby enabling the efficient coupling of surface-plasmon mode into free-space radiating modes. Leaky wave concept has found innovative applications in wavefront engineering, and we expect that these ideas could be an alternative to transform the spoof surface-plasmon mode into radiation.
{"title":"Decoupling from spoof surface plasmon polaritons waveguide by periodic reversal of cross-linking architecture","authors":"J. Xu, Hao Chi Zhang, T. Cui","doi":"10.1109/METAMATERIALS.2016.7746415","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746415","url":null,"abstract":"We propose a method for decoupling of spoof plasmon-polaritons (SPPs) which are highly confined on two anti-parallel ultra thin corrugated strips. Periodic reversal of cross linking element between the two parallel pair, which can ensuring the continuity of the transmission waveguide and results in a π -phase shifting with the adjacent inversion units. At the junction between adjacent cells, periodic discontinuity of structure can be viewed as a perturbation to generate space harmonic, generating a mixed mode is operation in its leaky-wave region, thereby enabling the efficient coupling of surface-plasmon mode into free-space radiating modes. Leaky wave concept has found innovative applications in wavefront engineering, and we expect that these ideas could be an alternative to transform the spoof surface-plasmon mode into radiation.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"60 1","pages":"403-405"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88748153","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}
Pub Date : 2016-09-01DOI: 10.1109/METAMATERIALS.2016.7746431
M. Barbuto, F. Bilotti, A. Toscano
“Structured light” is an emerging research field aiming at obtaining unusual amplitude and phase distributions of an optical beam, with potential applications ranging from manipulation of microscopic particles to communications or imaging systems. Typically confined to optical frequencies, it has recently been extended to microwaves but limited to the generation of an electromagnetic field with orbital angular momentum. In this contribution, we extend the possibility of generating structured fields at microwave frequencies to the case of an electromagnetic field with a Möbius strip polarization state. In particular, by using the cavity model, we analytically show that the required phase and amplitude patterns can be obtained by superimposing the radiated fields generated by different modes of a patch antenna.
{"title":"Generating structured fields at microwave frequencies","authors":"M. Barbuto, F. Bilotti, A. Toscano","doi":"10.1109/METAMATERIALS.2016.7746431","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746431","url":null,"abstract":"“Structured light” is an emerging research field aiming at obtaining unusual amplitude and phase distributions of an optical beam, with potential applications ranging from manipulation of microscopic particles to communications or imaging systems. Typically confined to optical frequencies, it has recently been extended to microwaves but limited to the generation of an electromagnetic field with orbital angular momentum. In this contribution, we extend the possibility of generating structured fields at microwave frequencies to the case of an electromagnetic field with a Möbius strip polarization state. In particular, by using the cavity model, we analytically show that the required phase and amplitude patterns can be obtained by superimposing the radiated fields generated by different modes of a patch antenna.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"1 1","pages":"49-51"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75362995","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}
Pub Date : 2016-09-01DOI: 10.1109/METAMATERIALS.2016.7746494
S. Maslovski
Interaction of Gaussian light beams with a spherical metamaterial thermal black hole (which is a an object that outperforms the Planck-Kirchhoff black body in absorption of light with a given frequency) is considered. At a given wavelength, such an object, while being optically large, has an effective absorption cross section significantly greater than its physical cross section. The Poynting vector distribution in the vicinity of such object under a few excitation scenarios is studied. It is found that the energy flow picture in the region beneath the effective event horizon of the metamaterial thermal black hole is very peculiar, with the energy flow trajectories collapsing at a couple of impact points on the physical surface of the metamaterial thermal black hole.
{"title":"Light absorption and scattering by metamaterial thermal black hole","authors":"S. Maslovski","doi":"10.1109/METAMATERIALS.2016.7746494","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746494","url":null,"abstract":"Interaction of Gaussian light beams with a spherical metamaterial thermal black hole (which is a an object that outperforms the Planck-Kirchhoff black body in absorption of light with a given frequency) is considered. At a given wavelength, such an object, while being optically large, has an effective absorption cross section significantly greater than its physical cross section. The Poynting vector distribution in the vicinity of such object under a few excitation scenarios is studied. It is found that the energy flow picture in the region beneath the effective event horizon of the metamaterial thermal black hole is very peculiar, with the energy flow trajectories collapsing at a couple of impact points on the physical surface of the metamaterial thermal black hole.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"17 1","pages":"220-222"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72603474","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}
Pub Date : 2016-09-01DOI: 10.1109/METAMATERIALS.2016.7746422
Rensheng Xie, Jie Cao, Shouzheng Zhu
In this paper, a compact multi-band cylindrical dielectric resonator antenna (DRA) loaded with CSRR is presented. The DRA is composed of a semi-cylindrical dielectric resonator with metal ground sheet on the cut plane loaded with metamaterial structure. It is fed by aperture coupled microstrip line. The antenna size is about 50% decreased compared with the full cylindrical DRA. The SCRR is used to broaden bandwidth of the antenna. Simulation result shows that the antenna bandwidth can cover the 3G, 4G and WLAN usage. The antenna gain is above 5dB in its working band.
{"title":"A compact multi-band dielectric resonator antenna loaded with CSRRs for communication systems","authors":"Rensheng Xie, Jie Cao, Shouzheng Zhu","doi":"10.1109/METAMATERIALS.2016.7746422","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746422","url":null,"abstract":"In this paper, a compact multi-band cylindrical dielectric resonator antenna (DRA) loaded with CSRR is presented. The DRA is composed of a semi-cylindrical dielectric resonator with metal ground sheet on the cut plane loaded with metamaterial structure. It is fed by aperture coupled microstrip line. The antenna size is about 50% decreased compared with the full cylindrical DRA. The SCRR is used to broaden bandwidth of the antenna. Simulation result shows that the antenna bandwidth can cover the 3G, 4G and WLAN usage. The antenna gain is above 5dB in its working band.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"49 1","pages":"421-423"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88706498","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}
Pub Date : 2016-09-01DOI: 10.1109/METAMATERIALS.2016.7746521
D. Ramaccia, D. Sounas, A. Alú, A. Toscano, F. Bilotti
In this contribution, we present some important advancements in Doppler cloak technology, which is based on the frequency mixing property of linear momentum-biased metamaterial, whose artificial permittivity function is modulated in space and time. The importance of such a technology is given by the possibility to manipulate the Doppler effect and restore the invisibility of cloaked object in relativistic motion. Here, we review the main characteristics of a conventional Doppler cloak, consisting of a system composed of a planar reflector covered by a spatio-temporally modulated slab. We demonstrate that such a scheme presents some drawbacks in terms of efficiency and, therefore, an enhanced version based on a momentum-biased parallel-plate medium is presented and discussed.
{"title":"Advancements in Doppler cloak technology: Manipulation of Doppler Effect and invisibility for moving objects","authors":"D. Ramaccia, D. Sounas, A. Alú, A. Toscano, F. Bilotti","doi":"10.1109/METAMATERIALS.2016.7746521","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746521","url":null,"abstract":"In this contribution, we present some important advancements in Doppler cloak technology, which is based on the frequency mixing property of linear momentum-biased metamaterial, whose artificial permittivity function is modulated in space and time. The importance of such a technology is given by the possibility to manipulate the Doppler effect and restore the invisibility of cloaked object in relativistic motion. Here, we review the main characteristics of a conventional Doppler cloak, consisting of a system composed of a planar reflector covered by a spatio-temporally modulated slab. We demonstrate that such a scheme presents some drawbacks in terms of efficiency and, therefore, an enhanced version based on a momentum-biased parallel-plate medium is presented and discussed.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"56 1","pages":"295-297"},"PeriodicalIF":0.0,"publicationDate":"2016-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84905222","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}
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