Pub Date : 2016-11-17DOI: 10.1109/METAMATERIALS.2016.7746506
B. Orazbayev, M. Beruete, I. Khromova
This work presents the designs of tunable mid-infrared (MIR) beam steering devices based on multilayer graphene-dielectric metamaterials. A tunable beam steering is achieved by changing the chemical potential of each graphene layer and, therefore, the effective refractive index of the metamaterial. Three different beam steerer concepts with a wide range of output angles (up to approximately 70°) are discussed. The proposed graphene-based tunable beam steering can be used in tunable transmitter/receiver modules for infrared imaging and sensing.
{"title":"Graphene-dielectric metamaterial for beam steering","authors":"B. Orazbayev, M. Beruete, I. Khromova","doi":"10.1109/METAMATERIALS.2016.7746506","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746506","url":null,"abstract":"This work presents the designs of tunable mid-infrared (MIR) beam steering devices based on multilayer graphene-dielectric metamaterials. A tunable beam steering is achieved by changing the chemical potential of each graphene layer and, therefore, the effective refractive index of the metamaterial. Three different beam steerer concepts with a wide range of output angles (up to approximately 70°) are discussed. The proposed graphene-based tunable beam steering can be used in tunable transmitter/receiver modules for infrared imaging and sensing.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90409178","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 : 2016-11-17DOI: 10.1109/METAMATERIALS.2016.7746474
I. Khromova, P. Kužel, I. Brener, J. Reno, U-Chan Chung Seu, C. Elissalde, M. Maglione, P. Mounaix, O. Mitrofanov
We extract the intrinsic properties of micrometre-sized anisotropic dielectric resonators through near-field time-domain terahertz spectorscopy. Narrow terahertz resonances corresponding to magnetic dipole modes in ≈ 30μm-sized mono-crystalline TiO2 spheres split due to material anisotropy. Ensembles of TiO2 resonators can form complex meta-atoms for unusual electromagnetic response in terahertz all-dielectric metamaterials.
{"title":"Near-field characterisation of anisotropic all-dielectric terahertz resonators","authors":"I. Khromova, P. Kužel, I. Brener, J. Reno, U-Chan Chung Seu, C. Elissalde, M. Maglione, P. Mounaix, O. Mitrofanov","doi":"10.1109/METAMATERIALS.2016.7746474","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746474","url":null,"abstract":"We extract the intrinsic properties of micrometre-sized anisotropic dielectric resonators through near-field time-domain terahertz spectorscopy. Narrow terahertz resonances corresponding to magnetic dipole modes in ≈ 30μm-sized mono-crystalline TiO2 spheres split due to material anisotropy. Ensembles of TiO2 resonators can form complex meta-atoms for unusual electromagnetic response in terahertz all-dielectric metamaterials.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80873712","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 : 2016-11-16DOI: 10.1109/METAMATERIALS.2016.7746444
H. Cano-Garcia, P. Kosmas, E. Kallos
We present analytical and experimental results of an antireflection coating for biological tissues at 60 GHz. The analytical study estimates the improvement in the transmitted power when perfect impedance matching is achieved by placing a metamaterial film in front of skin tissue. The estimated improvement is up to 4 dB. We subsequently present results from an animal trial where we demonstrate 1.9 dB improvement in the transmission through a 2.7 mm thick pig's ear that was sandwiched between patch antennas. To the best of our knowledge this is the first demonstration of a metamaterial antireflection coating for lossy biological tissues at this frequency range.
{"title":"Demonstration of enhancing the transmission of 60 GHz waves through biological tissue using thin metamaterial antireflection coatings","authors":"H. Cano-Garcia, P. Kosmas, E. Kallos","doi":"10.1109/METAMATERIALS.2016.7746444","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746444","url":null,"abstract":"We present analytical and experimental results of an antireflection coating for biological tissues at 60 GHz. The analytical study estimates the improvement in the transmitted power when perfect impedance matching is achieved by placing a metamaterial film in front of skin tissue. The estimated improvement is up to 4 dB. We subsequently present results from an animal trial where we demonstrate 1.9 dB improvement in the transmission through a 2.7 mm thick pig's ear that was sandwiched between patch antennas. To the best of our knowledge this is the first demonstration of a metamaterial antireflection coating for lossy biological tissues at this frequency range.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88643720","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 : 2016-11-16DOI: 10.1109/METAMATERIALS.2016.7746473
M. Elbahri, M. Hedayati, M. Abdelaziz
Here, we demonstrate experimentally for the first time the coherent oscillation and coupling of photoactive molecules integrated randomly in a polymeric medium which act cooperatively upon irradiation with UV light. Accordingly, we showed the specular reflection and Brewster phenomenon change of photochromic molecular dipole antennas. We successfully demonstrate the concept of Brewster wavelength, which is based on the dipolar interaction between radiating dipoles and the surrounding matrix possessing a net dipole moment, as a key tool for highly localized sensing of matrix polarity. Our results enrich our understanding of coherent dipole radiation and pave the way of research based on glassy disordered dipolar composites for new application in switchable optical devices.
{"title":"Active organic dipolar antenna","authors":"M. Elbahri, M. Hedayati, M. Abdelaziz","doi":"10.1109/METAMATERIALS.2016.7746473","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746473","url":null,"abstract":"Here, we demonstrate experimentally for the first time the coherent oscillation and coupling of photoactive molecules integrated randomly in a polymeric medium which act cooperatively upon irradiation with UV light. Accordingly, we showed the specular reflection and Brewster phenomenon change of photochromic molecular dipole antennas. We successfully demonstrate the concept of Brewster wavelength, which is based on the dipolar interaction between radiating dipoles and the surrounding matrix possessing a net dipole moment, as a key tool for highly localized sensing of matrix polarity. Our results enrich our understanding of coherent dipole radiation and pave the way of research based on glassy disordered dipolar composites for new application in switchable optical devices.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73996843","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 : 2016-11-16DOI: 10.1109/METAMATERIALS.2016.7746387
V. Asadchy, A. Elsakka, I. Faniayeu, S. Tcvetkova, S. Tretyakov
In this talk, design and realization of a single-layer meta-transmitarray which provides a certain functionality in a narrow frequency band while remains reflectionless (transparent) elsewhere is presented. Realization of such transmitarrays would allow integrating several metasurfaces in a cascade that performs different functionalities at different frequencies, opening a door for various new applications. We provide a theoretical analysis for alternative possible ways to realize such transmitarrays. Moreover, in the presentation we will show results for fabricated structures as well as a cascade consisting of three independent metasurfaces for general control over reflection, transmission and absorption.
{"title":"Multifunctional cascaded metasurfaces","authors":"V. Asadchy, A. Elsakka, I. Faniayeu, S. Tcvetkova, S. Tretyakov","doi":"10.1109/METAMATERIALS.2016.7746387","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746387","url":null,"abstract":"In this talk, design and realization of a single-layer meta-transmitarray which provides a certain functionality in a narrow frequency band while remains reflectionless (transparent) elsewhere is presented. Realization of such transmitarrays would allow integrating several metasurfaces in a cascade that performs different functionalities at different frequencies, opening a door for various new applications. We provide a theoretical analysis for alternative possible ways to realize such transmitarrays. Moreover, in the presentation we will show results for fabricated structures as well as a cascade consisting of three independent metasurfaces for general control over reflection, transmission and absorption.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82990557","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 : 2016-11-16DOI: 10.1109/METAMATERIALS.2016.7746481
V. Kivijarvi, M. Nyman, A. Shevchenko, M. Kaivola
We apply our recently developed analytical and numerical calculation techniques to design a low-loss optical metamaterial that eliminates optical diffraction for three-dimensional optical fields. The diffraction is suppressed for light propagating along the normal to the metamaterial surface and formed of TM-polarized plane-wave components. The effect is demonstrated by an example of divergence-free propagation of a radially polarized Laguerre-Gaussian beam. We also show that arbitrary optical images can be transferred through the material without distortion, if they are originally circularly polarized or unpolarized. Upon propagation, the images lose their TE-polarized components, but their shapes remain intact. Hence, the material acts as a new type of an optical polarizer.
{"title":"Propagation of optical fields through a three-dimensional diffraction-compensating metamaterial","authors":"V. Kivijarvi, M. Nyman, A. Shevchenko, M. Kaivola","doi":"10.1109/METAMATERIALS.2016.7746481","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746481","url":null,"abstract":"We apply our recently developed analytical and numerical calculation techniques to design a low-loss optical metamaterial that eliminates optical diffraction for three-dimensional optical fields. The diffraction is suppressed for light propagating along the normal to the metamaterial surface and formed of TM-polarized plane-wave components. The effect is demonstrated by an example of divergence-free propagation of a radially polarized Laguerre-Gaussian beam. We also show that arbitrary optical images can be transferred through the material without distortion, if they are originally circularly polarized or unpolarized. Upon propagation, the images lose their TE-polarized components, but their shapes remain intact. Hence, the material acts as a new type of an optical polarizer.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75660465","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 : 2016-11-16DOI: 10.1109/METAMATERIALS.2016.7746400
S. Tretyakov, F. Bilotti, A. Schuchinsky
This abstract is a short review of the history of the Metamaterials Congress Series, written on the occasion of its tenth anniversary.
这篇摘要是对超材料大会系列的历史的简短回顾，是在十周年之际写的。
{"title":"Metamaterials Congress Series: Origins and history","authors":"S. Tretyakov, F. Bilotti, A. Schuchinsky","doi":"10.1109/METAMATERIALS.2016.7746400","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746400","url":null,"abstract":"This abstract is a short review of the history of the Metamaterials Congress Series, written on the occasion of its tenth anniversary.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79630894","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 : 2016-11-16DOI: 10.1109/METAMATERIALS.2016.7746472
M. Abdelaziz, M. Hedayati, M. Elbahri
The plasmonic coupling of photoactive molecules and random arrangements of metal nanoparticles on a transparent substrate is demonstrated. It was observed that the triggering of the molecules by UV irradiation shift the plasmon resonance of the gold nanoparticles. In fact, UV irradiation of metal nanoclusters covered with thin layer of Spirooxazine doped polystyrene split the resonance dip in transmission spectra in which the wavelengths difference between the photo-induced divided dips can reach up to 80nm. The origin of the observation attributed to the coupling of the activated molecule resonance with that of the localized plasmon of the nanoparticles. The possibility of the dynamic control of the coupling between the particles and molecules can pave the way for application of plasmonic system in new optoelectronic devices.
{"title":"Active plasmonic coupling of metallic nanoparticles with dye","authors":"M. Abdelaziz, M. Hedayati, M. Elbahri","doi":"10.1109/METAMATERIALS.2016.7746472","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746472","url":null,"abstract":"The plasmonic coupling of photoactive molecules and random arrangements of metal nanoparticles on a transparent substrate is demonstrated. It was observed that the triggering of the molecules by UV irradiation shift the plasmon resonance of the gold nanoparticles. In fact, UV irradiation of metal nanoclusters covered with thin layer of Spirooxazine doped polystyrene split the resonance dip in transmission spectra in which the wavelengths difference between the photo-induced divided dips can reach up to 80nm. The origin of the observation attributed to the coupling of the activated molecule resonance with that of the localized plasmon of the nanoparticles. The possibility of the dynamic control of the coupling between the particles and molecules can pave the way for application of plasmonic system in new optoelectronic devices.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83007035","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 : 2016-11-16DOI: 10.1109/METAMATERIALS.2016.7746441
C. Caloz, S. Tretyakov
Nonreciprocal metamaterials represent a vast and little explored field of physics and engineering. This paper, as a subset of [1], overviews fundamental principles and recent developments in this area.
{"title":"Nonreciprocal metamaterials: A global perspective","authors":"C. Caloz, S. Tretyakov","doi":"10.1109/METAMATERIALS.2016.7746441","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746441","url":null,"abstract":"Nonreciprocal metamaterials represent a vast and little explored field of physics and engineering. This paper, as a subset of [1], overviews fundamental principles and recent developments in this area.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73356623","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 : 2016-11-16DOI: 10.1109/METAMATERIALS.2016.7746406
C. Valagiannopoulos, C. Simovski, S. Tretyakov
The speed with which electromagnetic energy can be wirelessly transferred from a source to the user is a crucial parameter for performance of a large number of electronic and photonic devices. In this presentation we determine the constituent parameters of a medium which supports theoretically infinite energy concentration close to a medium sample surface; such a material combines properties of Perfectly Matched Layers (PML) and Double-Negative (DNG) media. It realizes conjugate matching with free space for every possible mode including, most importantly, all evanescent modes. We show that extremely high-amplitude resonating fields in the vicinity of a conjugately matched body can create large far-field radiation with the use of randomly placed particles which play the role of emission “vessels”.
{"title":"Conjugately-matched uniaxial metamaterials make extremely efficient absorbers, emitters, and reflectors","authors":"C. Valagiannopoulos, C. Simovski, S. Tretyakov","doi":"10.1109/METAMATERIALS.2016.7746406","DOIUrl":"https://doi.org/10.1109/METAMATERIALS.2016.7746406","url":null,"abstract":"The speed with which electromagnetic energy can be wirelessly transferred from a source to the user is a crucial parameter for performance of a large number of electronic and photonic devices. In this presentation we determine the constituent parameters of a medium which supports theoretically infinite energy concentration close to a medium sample surface; such a material combines properties of Perfectly Matched Layers (PML) and Double-Negative (DNG) media. It realizes conjugate matching with free space for every possible mode including, most importantly, all evanescent modes. We show that extremely high-amplitude resonating fields in the vicinity of a conjugately matched body can create large far-field radiation with the use of randomly placed particles which play the role of emission “vessels”.","PeriodicalId":6587,"journal":{"name":"2016 10th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80725390","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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