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

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Theoretical study on bandwidth enhancement of negative impedance converters with an emitter follower circuit 发射极随动电路增强负阻抗变换器带宽的理论研究
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948625
Y. Horii, T. Kaneko, S. Takagi, M. Akiyama
{"title":"Theoretical study on bandwidth enhancement of negative impedance converters with an emitter follower circuit","authors":"Y. Horii, T. Kaneko, S. Takagi, M. Akiyama","doi":"10.1109/METAMATERIALS.2014.6948625","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948625","url":null,"abstract":"This paper proposes a new negative impedance converter (NIC) with an emitter follower (EF) circuit. Two types of NICs with EF and without EF, designed to generate a negative capacitance of -100 pF, are demonstrated theoretically by using circuit simulators. Compared with the NIC without EF, the proposed one can provide 1.7 times wider bandwidth from DC to 7.2 MHz with an amplitude deviation of less than 2.3 dB. The EF circuit is considered to be useful also for high-frequency-NICs to enhance their operational bandwidth.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"90 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":"122728966","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
Effects of high power on microwave metamaterials 大功率对微波超材料的影响
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948624
R. Seviour, Y. Tan, A. Hopper
{"title":"Effects of high power on microwave metamaterials","authors":"R. Seviour, Y. Tan, A. Hopper","doi":"10.1109/METAMATERIALS.2014.6948624","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948624","url":null,"abstract":"In this paper we examine experimentally and numerically the effect of exposing a metamaterial to relatively high-power EM waves. We show that a metamaterial consisting of a conventional Split Ring Resonator on an FR4 substrate can undergo combustion when exposed to 1W of RF. We compare the experimental results to numerical simulations, showing that numerical models can be accurately used to predict the thermal behaviour of metamaterials under exposure to high-power RF.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"5 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":"126458512","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
Metasurfaces for absorption enhancement 增强吸收的超表面
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948608
A. Díaz-Rubio, D. Torrent, J. Carbonell, J. Ssnchez-Dehesa
{"title":"Metasurfaces for absorption enhancement","authors":"A. Díaz-Rubio, D. Torrent, J. Carbonell, J. Ssnchez-Dehesa","doi":"10.1109/METAMATERIALS.2014.6948608","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948608","url":null,"abstract":"The absorption enhancement by lossy dielectric layers backed by metallic metasurfaces has been studied. A rigorous analysis based on mode matching theory has been used for obtaining analytical expressions for the peak position and for total absorption.","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":"124703579","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
Soft acoustic metamaterials by design 设计的软声学超材料
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948637
T. Brunet, J. Dubois, B. Mascaro, S. Raffy, J. Leng, A. Merlin, O. Mondain-Monval, O. Poncelet, C. Aristégui
{"title":"Soft acoustic metamaterials by design","authors":"T. Brunet, J. Dubois, B. Mascaro, S. Raffy, J. Leng, A. Merlin, O. Mondain-Monval, O. Poncelet, C. Aristégui","doi":"10.1109/METAMATERIALS.2014.6948637","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948637","url":null,"abstract":"The link between the constitutive parameters of dissipative media supporting (un)usual wave motions and the plane wave motion exhibition, has been established in order to propose a tool for designing functional materials able to control acoustic wave propagation. In this context, we propose a new route to produce a large amount of Mie resonators possessing very low sound speed (100 m s-1) by means of soft matter techniques coupled with microfluidics. Their random distribution in a water-based gel matrix (with a much higher sound speed, 1500 m s-1) should confer specific effective acoustic properties on these “ultra-slow” Mie resonator suspensions, such as negative acoustic refractive index.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"297 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":"123147785","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
Dielectric photonic crystals with superconducting defects 具有超导缺陷的介电光子晶体
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948643
N. Dadoenkova, I. Lyubchanskii, Y. P. Lee, T. Rasing
{"title":"Dielectric photonic crystals with superconducting defects","authors":"N. Dadoenkova, I. Lyubchanskii, Y. P. Lee, T. Rasing","doi":"10.1109/METAMATERIALS.2014.6948643","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948643","url":null,"abstract":"One-dimensional dielectric photonic crystals with two complex defect layers, consisting of ultrathin superconducting and dielectric sublayers, are theoretically studied. The influence of the positions and structure of the defects (right or left position of the superconducting sublayer with respect to the dielectric sublayer) inside the photonic crystal on the photonic band gap spectra was theoretically investigated at normal incidence of light.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"53 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":"129463547","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
Nanostructured graphene metasurface for terahertz cloaking of elliptical cylinders and metallic strips 用于太赫兹椭圆圆柱体和金属条隐身的纳米结构石墨烯超表面
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948537
A. Yakovlev, H. Bernety
{"title":"Nanostructured graphene metasurface for terahertz cloaking of elliptical cylinders and metallic strips","authors":"A. Yakovlev, H. Bernety","doi":"10.1109/METAMATERIALS.2014.6948537","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948537","url":null,"abstract":"Here, we propose the analytical framework for electromagnetic cloaking of dielectric and metallic elliptical cylinders with a nanostructured graphene metasurface at low-terahertz frequencies. The analysis is based on the solution of the scattering problem in terms of elliptical waves given by the radial and angular Mathieu functions with the sheet impedance boundary conditions at the graphene metasurface, having closed-form expression for the surface impedance. The scattering cancellation occurs for all the incident angles and all the scattering angles with a specific value of surface reactance of graphene nanopatches. A special case of cloaking with the elliptically shaped metasurface concerns a 2-D metallic strip represented as a degenerated ellipse, such that the focal points of the elliptical cloak coincide with the edges of the strip. It is shown that the nanostructured graphene metasurface with the same geometrical parameters can be used for cloaking of elliptical cylinders of different dimensions, including the case of a strip, by varying the Fermi energy of graphene.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"35 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":"133095266","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
Surface spaser spectroscopy 表面激光光谱学
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948611
A. Dorofeenko, I. Nechepurenko, Yuriy E. Lozovik, A. Pukhov
{"title":"Surface spaser spectroscopy","authors":"A. Dorofeenko, I. Nechepurenko, Yuriy E. Lozovik, A. Pukhov","doi":"10.1109/METAMATERIALS.2014.6948611","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948611","url":null,"abstract":"We propose a novel method for high sensitive surface spectroscopy based on a hole burning in the spaser spectrum due to absorption by analyzed molecules or clusters located inside a plasmonic cavity. The system is modelled by means of 1D Maxwell-Bloch equations.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"177 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":"134019792","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
System-by-design paradigm as applied to the synthesis of innovative field manipulation devices including task-oriented metamaterials 系统设计范式应用于包括任务导向的超材料在内的创新场操纵装置的合成
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948656
G. Oliveri, F. Bilotti, A. Toscano, A. Massa
{"title":"System-by-design paradigm as applied to the synthesis of innovative field manipulation devices including task-oriented metamaterials","authors":"G. Oliveri, F. Bilotti, A. Toscano, A. Massa","doi":"10.1109/METAMATERIALS.2014.6948656","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948656","url":null,"abstract":"The System-by-Design (SbD) paradigm is adopted in this work in order to synthesize innovative microwave devices comprising task-oriented engineered materials. More in detail, the synthesis problem is formulated in the SbD framework in terms of the combination of a set of elementary functional blocks, each one devoted to the analysis/synthesis of a specific portion of the target device (e.g., the electromagnetic characterization of the material, the simulation of the device comprising the engineered material, the configuration of the material unit cell). The design blocks are then combined in an overall SbD loop to yield an integrated design procedure which is able to fully exploit the degrees of freedom available in the design to satisfy the physical/performance applicative constraints with the minimum costs, andmaximum efficiency and scalability. Representative numerical examples will be reported in the presentation concerning the design of different wave manipulating devices within the proposed SbD approach.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"101 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133457045","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
Flexible metamaterials for advanced photonics applications 先进光子学应用的柔性超材料
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948612
P. Reader-Harris, M. Pietrzyk, Y. Shen, B. Kirkpatrick, A. Di Falco
{"title":"Flexible metamaterials for advanced photonics applications","authors":"P. Reader-Harris, M. Pietrzyk, Y. Shen, B. Kirkpatrick, A. Di Falco","doi":"10.1109/METAMATERIALS.2014.6948612","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948612","url":null,"abstract":"We present our recent results on the design, fabrication and applications of flexible metamaterials in the visible and near infrared range. In particular, we demonstrate broad angle spectral filtering for lab-on-fibre applications, the realisation of metamaterials with epsilon-near-zero response and their dynamical tuning via all-optical methods.","PeriodicalId":151955,"journal":{"name":"2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics","volume":"09 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":"127446434","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
Optical activity and circular dichroism of 3D-chiral holes: Symmetry, causality, reciprocity and reversibility aspects 三维手性空穴的旋光性和圆二色性:对称性、因果性、互易性和可逆性
2014 8th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics Pub Date : 2014-11-06 DOI: 10.1109/METAMATERIALS.2014.6948618
M. Gorkunov, A. Ezhov, V. Artemov, O. Y. Rogov, S. Palto
{"title":"Optical activity and circular dichroism of 3D-chiral holes: Symmetry, causality, reciprocity and reversibility aspects","authors":"M. Gorkunov, A. Ezhov, V. Artemov, O. Y. Rogov, S. Palto","doi":"10.1109/METAMATERIALS.2014.6948618","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2014.6948618","url":null,"abstract":"We report substantial and broadband optical activity and circular dichroism of subwavelength arrays of 3D-chiral holes in a freely suspended silver film. We explain our observations in terms of general physical principles. In particular, we consider the implications of the array in-plane 4-fold symmetry and the difference of the interfaces, verify the appropriate form of the Kramers-Kronig relations, and show how the Lorentz reciprocity lemma connects the circular dichroism with irreversibility due to dissipation. We suggest a possibility of asymmetric transmission through arrays of lower in-plane symmetry.","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":"127832122","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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