{"title":"Tunable and efficient long range energy transfer via graphene plasmon modes","authors":"V. D. Karanikolas, C. A. Marocico, A. L. Bradley","doi":"10.1109/METAMATERIALS.2015.7342548","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342548","url":null,"abstract":"We present a theoretical investigation of the energy transfer efficiency between quantum systems placed in the vicinity of a doped graphene layer using a Green's tensor formalism. The direct interaction, Förster mechanism, between donor and acceptor dipoles dominates when they are close to each other, but is modified from its free-space value due to the presence of the graphene monolayer. In particular, the Förster radius, R0, is modified from its free space value of R0 = 19nm and can reach values of 100nm. As the donor-acceptor distance is increased the direct interaction is overshadowed by the interaction via the propagating graphene plasmon mode. Due to the large propagation length of the surface plasmon mode on graphene, energy transfer efficiencies as high as 50% can still be achieved for distances as large as 300nm. The interaction via the surface plasmon mode of a graphene monolayer can be tuned.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"22 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":"127582354","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}
A. Espinosa-Soria, S. Mas, A. Griol, F. J. Rodríguez-Fortuño, A. Martínez
{"title":"Full measurement of the stokes parameters of a light beam using on-chip silicon nanoantennas","authors":"A. Espinosa-Soria, S. Mas, A. Griol, F. J. Rodríguez-Fortuño, A. Martínez","doi":"10.1109/METAMATERIALS.2015.7342572","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342572","url":null,"abstract":"Beam polarimetry is a versatile tool in optical technology enabling the measurement of the light polarization state. In this work, we demonstrate an on-chip polarization analyzer working at telecom wavelengths that allows for a direct measurement of the Stokes parameters of an incoming plane wave. The analyzer consists of three silicon nanoantennas coupled to three waveguides (having six outputs) so that each nanoantenna responds to a certain polarization state by changing the amount of optical power coupled to each waveguide as well as the direction of propagation along the coupled waveguide.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"20 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":"116671441","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":"Effects of optical Joule heating in metamaterial absorber: A non-linear recursive feedback optical-thermodynamic multiphysics study","authors":"S. In, N. Park","doi":"10.1109/METAMATERIALS.2015.7342544","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342544","url":null,"abstract":"High absorption efficiency of canonical metal-insulator-metal (MIM) structures have been considered as a desirable feature for various photonic and electronic technological applications, including chemical and biomedical sensors, photodetectors, thermal emitters, and solar cells. However, most of the absorption efficiency of metamaterial absorber, calculated without the temperature dependence fails to precisely reproduce the values obtained from experiments. In this study, by using a non-linear recursive feedback optical-thermodynamic numerical analysis we show that optical absorption induced temperature change could affect the permittivity of metal and thus diminish the efficiency of metamaterial absorber. Our work will stimulate factual designs of metamaterial absorbers and also will foster various applications in analyzing absorbing, sensing, emitting and detecting devices based on non-linear optical-thermal coupling effects.","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":"116723062","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":"Dual-band, low-frequency artificial magnetic conductor using lumped components","authors":"G. Lasser, Z. Popovic, C. Mecklenbrauker","doi":"10.1109/METAMATERIALS.2015.7342563","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342563","url":null,"abstract":"In this contribution we discuss the design of a Frequency Selective Surface (FSS) serving as planar, dual-band, low-frequency Artificial Magnetic Conductor (AMC). The unit cell geometry of the AMC is based on meander structures to reduce its size and allow for the design of two separately tuneable resonances. The FSS is constructed from two single-sided Printed Circuit Boards (PCBs) manufactured from cost-effective FR-4 separated by nylon spacers. The unit cells contain lumped elements for tuning of the individual resonances and immunity to permittivity variations of the substrate. The numerical simulation results are discussed and compared to measurements obtained from manufactured specimens.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"50 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":"130877588","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":"Infinite Maxwell fish-eye in a finite area","authors":"Yangjié Liu, Huanyang Chen, Majid Naeem","doi":"10.1109/METAMATERIALS.2015.7342483","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342483","url":null,"abstract":"We propose a new lens design via isotropic refractive index of heterogeneous medium. By aid of conformal map, one transfers the full Maxwell fisheye into a mapped profile within a unit circle. By this trick, the imaging resolution of this new profile is maintained as good as the mirrored Maxwell fisheye profile or its conformally-mapped counterpart in previous literature.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"13 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":"122259689","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":"Biaxial anisotropic sample design and rectangular to square waveguide material characterization system","authors":"A. Knisely, M. Havrilla, P. Collins","doi":"10.1109/METAMATERIALS.2015.7342445","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342445","url":null,"abstract":"An electrically biaxial anisotropic sample design methodology utilizing crystal-lographic symmetry is discussed. Sample synthesis equations based on equivalent capacitance analysis translate desired permittivity values and host materials to sample cell dimensions and are subsequently fabricated on a 3-D printer. Equivalent capacitance predictions yield permittivity tensor element values comparable to simulation results. A rectangular to square waveguide measurement system is also used to verify the sample design methodology.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"126 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":"129692319","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":"Amplification and spontaneous emission of plasmons in photo-inverted graphene — Metamaterials 2015","authors":"A. F. Page, F. Ballout, O. Hess, J. Hamm","doi":"10.1109/METAMATERIALS.2015.7342589","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342589","url":null,"abstract":"Graphene, as a sheet conductor, supports surface plasmon modes, which, due to the zero band gap of its electronic stucture, can be absorbed and re-emitted by the creation or anihilation of electron/hole pairs. This opens up the question, whether plasmons with gain can be supported by partially inverting the carrier system. We show that, by calculating the exact complex-frequency plasmon dispersion (CFPD) of such inverted systems, plasmons can be amplified by stimulated emission even in cases of finite scattering rates, finite temperatures, and extrinsic chemical doping. From here, given these non-equilibrium carrier distributions, we investigate the rates of electron-hole recombination via plasmonic channels and find they are a factor of 5 faster than previously predicted.","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":"130093046","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}
T. Weldon, John M. C. Covington, K. L. Smith, R. Adams
{"title":"A two-port digital discrete-time non-Foster circuit designed for negative capacitance","authors":"T. Weldon, John M. C. Covington, K. L. Smith, R. Adams","doi":"10.1109/METAMATERIALS.2015.7342435","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342435","url":null,"abstract":"A digital discrete-time approach is presented for the design of two-port non-Foster circuits. The proposed digital approach offers the potential for effective implementation of complex non-Foster circuits in a wide variety of applications such as wideband metamaterials, broadband impedance matching, electrically small antennas, and artificial magnetic conductors. To illustrate the proposed digital design approach, a straightforward discrete-time implementation of a floating two-port negative capacitance is considered. Simulation results demonstrate the effectiveness of the implementation and design approach in producing -50 pF capacitance.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"102 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":"127214865","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":"Suppression of scattering based on an ultrathin metasurface","authors":"Jie Zhao, Q. Cheng, M. Qi, T. Cui","doi":"10.1109/METAMATERIALS.2015.7342440","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342440","url":null,"abstract":"We propose a method to suppress the scattering based on an ultrathin metasurface in a broad frequency band. The designed metasurface is composed of two kinds of units with different geometries and reflection phases, which provide destructive interference in most of reflected directions, suppressing the main lobe and side lobes significantly of the scattering pattern. The resonance frequencies of two units are elaborately designed to broaden the frequency band. Full-wave numerical simulation results show that a large bandwidth of 1.74 GHz is achieved using the proposed metasurface with the thickness 1 mm, which suppresses the scattering by at least 10 dB. The proposed metasurface may find wide applications in a series areas.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"69 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":"127767945","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":"Tailored metamaterial perfect absorber","authors":"M. Hedayati, M. Abdelaziz, A. Jamali, M. Elbahri","doi":"10.1109/METAMATERIALS.2015.7342551","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2015.7342551","url":null,"abstract":"Complete absorption of light which has been recently demonstrated in metamaterials has drawn the attention of the scientists because of its potential application in harvesting energy and sensors. Controlling the absorption band-width, peak position and intensity are some of the essential factors in metamaterial absorbers. Although many reports showed the metamaterial with high absorption in broad range of spectrum, strong tuning the absorption band-width has been rarely shown. In this work, we show that using three component (Au, TiO2 and SiO2) nanocomposite deposited on an optically thick gold film through simultaneous sputtering, one can broaden the band-width and peak position to span UV up to NIR.","PeriodicalId":143626,"journal":{"name":"2015 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":"142 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":"116307839","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}