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2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)最新文献

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Enhancement of photovoltaic absorption in thin-film silicon solar cells by all-dielectric light-trapping and antireflective coatings 全介电捕光和减反射涂层增强薄膜硅太阳能电池的光伏吸收
2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2015-12-03 DOI: 10.1109/METAMATERIALS.2015.7342508
P. Voroshilov, C. Simovski, P. Belov, A. Shalin
{"title":"Enhancement of photovoltaic absorption in thin-film silicon solar cells by all-dielectric light-trapping and antireflective coatings","authors":"P. Voroshilov, C. Simovski, P. Belov, A. Shalin","doi":"10.1109/METAMATERIALS.2015.7342508","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342508","url":null,"abstract":"We study the efficiency of several types of all-dielectric light-trapping and antireflective coatings for the enhancement of photovoltaic absorption in thin-film silicon solar cells. We compare the photovoltaic absorption enhancement offered by a square array of nanovoids in the dielectric covering of the cell with that granted by a flat blooming layer, and a densely packed array of dielectric nanospheres.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130271440","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
Beyond Anderson localization: Anomalous transmission of waves through media with Lévy disorder 超越安德森定位:具有lsamvy障碍的波通过介质的异常传输
2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2015-12-03 DOI: 10.1109/METAMATERIALS.2015.7342468
A. A. Fern'andez-Mar'in, J. A. Méndez-Bermúdez, J. Carbonell, F. Cervera, J. Sánchez-Dehesa, V. Gopar
{"title":"Beyond Anderson localization: Anomalous transmission of waves through media with Lévy disorder","authors":"A. A. Fern'andez-Mar'in, J. A. Méndez-Bermúdez, J. Carbonell, F. Cervera, J. Sánchez-Dehesa, V. Gopar","doi":"10.1109/METAMATERIALS.2015.7342468","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342468","url":null,"abstract":"It is widely known that the presence of disorder leads to an exponential localization of waves in one-dimensional random media, as predicted by Anderson. In this work, however, we provide experimental evidence that waves can be anomalously localized, in relation to the standard Anderson localization, by introducing random configurations of the disorder that follow a distribution with a power-law tail, i.e., a Lévy-type distribution. Using a microwave waveguide with dielectric slabs randomly placed, we show that if the spacing between slabs follow a Lévy-type distribution, unconventional properties in the microwave-transmission fluctuations appear, revealing the presence of anomalous localization. Our analytical model describes the experimental results for the statics of the transmission fluctuations. Effects of anomalous localization on the transmission are compared with those from the standard Anderson localization as well.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123235084","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
Enhanced spontaneous parametric down-conversion in a metal-dielectric interface 金属-介电界面中增强的自发参数下转换
2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2015-12-03 DOI: 10.1109/METAMATERIALS.2015.7342484
A. Loot, I. Sildos, V. Hizhnyakov
{"title":"Enhanced spontaneous parametric down-conversion in a metal-dielectric interface","authors":"A. Loot, I. Sildos, V. Hizhnyakov","doi":"10.1109/METAMATERIALS.2015.7342484","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342484","url":null,"abstract":"Spontaneous parametric down-conversion in a metal-dielectric interface in the case of oblique laser excitation is considered. In this case it is possible to generate pairs of surface plasmon polaritons with high efficiency, if the angle of excitation corresponds to the Kretschmann configuration for generated plasmons. The efficiency can be additionally increased/enhanced if to use metal-dielectric interfaces with long-range surface plasmon polaritons and/or a properly nanostructured metallic film, allowing one to directly excite surface plasmon polaritons and to fulfill their phase matching condition with generated surface plasmon polaritons.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"49 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123256988","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: 9
A digital discrete-time non-Foster approach to broadband fast-wave microstrip lines 宽带快波微带线的数字离散时间非福斯特方法
2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2015-12-03 DOI: 10.1109/METAMATERIALS.2015.7342436
T. Weldon, R. Adams
{"title":"A digital discrete-time non-Foster approach to broadband fast-wave microstrip lines","authors":"T. Weldon, R. Adams","doi":"10.1109/METAMATERIALS.2015.7342436","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342436","url":null,"abstract":"The design of a fast-wave microstrip line is presented, where analog negative capacitance circuits are replaced by digital discrete-time non-Foster circuits. Building upon recent results for a wideband three-section fast-wave microstrip line using three negative capacitors, the proposed digital approach is shown to exhibit fast-wave characteristics over wide bandwidth with phase velocity greater than the speed of light in vacuum. Quality factor of negative capacitors is known to limit bandwidth of analog non-Foster fast-wave lines, and similar behavior is observed in the digital non-Foster simulations. Nevertheless, the proposed digital non-Foster approach is shown to offer broadband fast-wave performance, even with limited quality factor.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126609952","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: 4
Mechanical waves deflection/damping with seismic metamaterials 用地震超材料使机械波偏转/阻尼
2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2015-12-03 DOI: 10.1109/METAMATERIALS.2015.7342432
B. Ungureanu, S. Brûlé, Y. Achaoui, S. Enoch, S. Guenneau
{"title":"Mechanical waves deflection/damping with seismic metamaterials","authors":"B. Ungureanu, S. Brûlé, Y. Achaoui, S. Enoch, S. Guenneau","doi":"10.1109/METAMATERIALS.2015.7342432","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342432","url":null,"abstract":"Recent scientific advances in total or partial reflection (band gaps due to periodicity) and invisibility (artificial anisotropy via transformation physics) for elastic waves, as well as wave magnitude damping (using Helmholtz resonators), open new avenues in seismic metamaterials.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"41 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122500784","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
Theoretical study on stable broadband non-Foster negative capacitors yielded by parasitic reactance of an operational amplifier 运算放大器寄生抗产生稳定宽带非福斯特负电容的理论研究
2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2015-12-03 DOI: 10.1109/METAMATERIALS.2015.7342539
Y. Horii, S. Takagi
{"title":"Theoretical study on stable broadband non-Foster negative capacitors yielded by parasitic reactance of an operational amplifier","authors":"Y. Horii, S. Takagi","doi":"10.1109/METAMATERIALS.2015.7342539","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342539","url":null,"abstract":"This paper proposes a new method to design negative capacitors by utilizing a parasitic reactance of an operational amplifier. Different from the conventional ways to use negative impedance converters (NICs), the proposed circuit does not include any impedance elements whose sign is to be reversed by the NIC topology. Therefore, the yielded negative capacitance cannot be tuned flexibly. However, the proposed method can provide a stable broadband negative capacitance. From the circuit simulation, a negative capacitance from -304pF to -275pF (5% criteria for -290pF at 89MHz) is yielded in a frequency range from 37MHz to 100MHz with a reflection coefficient from -4.5dB to -2.1dB.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131239600","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
Beam steering lens based on transformation electromagnetics concept 基于变换电磁学原理的光束转向透镜
2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2015-12-03 DOI: 10.1109/METAMATERIALS.2015.7342458
J. Yi, S. Burokur, A. Lustrac
{"title":"Beam steering lens based on transformation electromagnetics concept","authors":"J. Yi, S. Burokur, A. Lustrac","doi":"10.1109/METAMATERIALS.2015.7342458","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342458","url":null,"abstract":"Based on transformation electromagnetics concept, the design procedure of a lens antenna, which steers the radiated beam of a primary source, is presented. Laplace's equation is adopted to construct the mapping between the virtual space and the physical space. Full wave simulations are performed to validate the model. The numerical results show that, when placing the lens antenna above a microstrip patch array, the radiated beam is deflected to an off-normal direction.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133177862","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
Impact assessment of bias network topology on the performance of electrothermally reconfigurable metamaterials 偏置网络拓扑对电热可重构超材料性能的影响评估
2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2015-12-03 DOI: 10.1109/METAMATERIALS.2015.7342560
A. Lalas, N. Kantartzis, T. Tsiboukis
{"title":"Impact assessment of bias network topology on the performance of electrothermally reconfigurable metamaterials","authors":"A. Lalas, N. Kantartzis, T. Tsiboukis","doi":"10.1109/METAMATERIALS.2015.7342560","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342560","url":null,"abstract":"The behavior of optimally-designed electrothermally controlled complex materials, when implemented with different bias network setups, is investigated in this paper. The proposed devices obtained from the combination of two-hot-arm electrothermal actuators with a split-ring resonator (SRR) can be actuated by employing two discrete topologies of the bias lines. These components exhibit mu-negative (MNG) performance, as well as double-negative (DNG) behavior, along with bandwidth tunability. Various numerical results, derived via the finite element method (FEM), validate their modified response.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114498793","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
The construction of hyperbolic metamaterial for an optical spectral range 光谱范围内双曲型超材料的构造
2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2015-12-03 DOI: 10.1109/METAMATERIALS.2015.7342427
N. Mukhurov, M. Binhussain, I. Gasenkova, N. Kazak, V. Belyi
{"title":"The construction of hyperbolic metamaterial for an optical spectral range","authors":"N. Mukhurov, M. Binhussain, I. Gasenkova, N. Kazak, V. Belyi","doi":"10.1109/METAMATERIALS.2015.7342427","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342427","url":null,"abstract":"The construction is proposed of the hyperbolic metamaterial for an optical spectral range with the expanded working range of wavelength due to periodic system of nanorods in a definite range of diameters and heights. The construction is fulfilled on aluminum-oxide ceramics with the periodic system of nanoholes with the diameters from 30 up to 50 nm filled with particles of noble metal, which forms metal nanorods with the height from 3 up to 10 diameters of nanorods from the side of the surface of dielectric substrate turned toward the source of electromagnetic radiation. To provide mechanical strength the thickness of the dielectric substrate is to be not less than 30 μm.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123211505","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
Micro-gap thermophotovoltaic generator enhanced by a wire metamaterial 金属丝超材料增强的微间隙热光伏发电机
2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) Pub Date : 2015-12-03 DOI: 10.1109/METAMATERIALS.2015.7342606
M. Mirmoosa, C. Simovski
{"title":"Micro-gap thermophotovoltaic generator enhanced by a wire metamaterial","authors":"M. Mirmoosa, C. Simovski","doi":"10.1109/METAMATERIALS.2015.7342606","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342606","url":null,"abstract":"We introduce new microgap thermophotovoltaic systems enhanced by tungsten nanowires and allowing the optimized super-Planckian spectrum of radiative heat transfer for electricity generation. We perform a system analysis of these systems.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121695151","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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