Results 51 to 60 of about 526,512 (257)

Coupled-mode theory for nonlinear plasmonic structures and metamaterials

, 2013
We develop a systematic procedure for deriving the coupled-mode equations describing the spatial evolution of the slowly-varying amplitudes of electromagnetic modes in nonlinear periodic structures with loss and gain.
Neshev, Dragomir, Sukhorukov, Andrey, Kivshar, Yuri, Solntsev, Alexander, Kruk, Sergey, Sergey S. Kruk, Yuri S. Kivshar, Sukhorukov, Andrey A., Dragomir N. Neshev, Alexander S. Solntsev, Neshev, Dragomir N., Kruk, Sergey S., Andrey A. Sukhorukov, Solntsev, Alexander S., Kivshar, Yuri S.   +14 more
core   +1 more source

Active and tunable nanophotonic metamaterials

Nanophotonics, 2022
Metamaterials enable subwavelength tailoring of light–matter interactions, driving fundamental discoveries which fuel novel applications in areas ranging from compressed sensing to quantum engineering.
Fan Kebin, Averitt Richard D., Padilla Willie J.   +2 more
doaj   +1 more source

Broadband electromagnetic cloaking with smart metamaterials [PDF]

Nature Communications, 2012
The ability to render objects invisible with a cloak that fits all objects and sizes is a long-standing goal for optical devices. Invisibility devices demonstrated so far typically comprise a rigid structure wrapped around an object to which it is fitted.
Shin, Dongheok, Urzhumov, Yaroslav, Jung, Youngjean, Kang, Gumin, Baek, Seunghwa, Choi, Minjung, Park, Haesung, Kim, Kyoungsik, Smith, David R   +8 more
openaire   +3 more sources

Parity‐Dependent THz Harmonic Generation in Electrically Pumped Micro‐Lasers Exploiting Topological Insulator–Metamaterial Gratings

Advanced Materials, EarlyView.
Topological insulator–metamaterials integrated with electrically driven terahertz quantum cascade lasers enable parity‐dependent harmonic generation. Bulk‐dominated Bi2Se3 favors third‐harmonic emission at 9.96 THz, whereas topological‐surface‐state‐dominated Bi2Se3, Bi2Te3, and (Bi,Sb)2Te3 generate strong second harmonics near 6.5 THz.
Alessandra Di Gaspare, Craig S. Knox, Ahmet Yagmur, Sara Ghayeb Zamharir, Lianhe Li, Satoshi Sasaki, A. Giles Davies, Edmund H. Linfield, Joshua R. Freeman, Miriam S. Vitiello   +9 more
wiley   +1 more source

Mechanical nonlinearities in electromagnetic metamaterials

, 2013
We review our recent achievements in the development of metamaterials with mechanical nonlinearity. The novel nonlinearity types are achieved by enabling new degrees of freedom in metamaterial design, which allow a dynamic changes in the geometry of ...
Lapine, M, M. Lapine
core   +1 more source

Millifluidic Synthesis of Core–Shell Resonators For Tunable Sonic BandGaps in Acoustic Metamaterials

Advanced Materials Interfaces, EarlyView.
Millimeter‐scale core–shell acoustic resonators are fabricated by a gravity‐assisted dripping approach and incorporated into epoxy composites at controlled volume fractions. The resulting alumina–core resonator composites show tunable low‐frequency acoustic attenuation, demonstrating a scalable route for integrating locally resonant metamaterial units ...
Colton Steiner, Xiaohui Shen, Bianka Pajo, Chin‐Teh Sun, Jeffrey P. Youngblood, Carlos Martinez   +5 more
wiley   +1 more source

Microwall‐Integrated Terahertz Metasurfaces for Spatially Guided Label‐Free Sensing of Micrometer‐Scale Plastic Particles

Advanced Materials Technologies, EarlyView.
A THz metasurface device integrating a metal–dielectric–metal resonator with microwall‐defined recessed regions enables spatially guided, label‐free sensing of micrometer‐scale plastic particles. The as‐fabricated devices exhibit distinct THz reflection resonances for 3.1‐µm polystyrene particles and a concentration‐dependent resonance‐frequency‐shift ...
Naoki Inomata, Yuki Sakai, Yoshiaki Kanamori   +2 more
wiley   +1 more source

Plasmonic and metamaterial structures as electromagnetic absorbers [PDF]

Laser & Photonics Reviews, 2014
Abstract Electromagnetic absorbers have drawn increasing attention in many areas. A series of plasmonic and metamaterial structures can work as efficient narrowband absorbers due to the excitation of plasmonic or photonic resonances, providing a great potential for applications in designing selective thermal emitters, biosensing, etc.
Cui, Yanxia, He, Yingran, Jin, Yi, Ding, Fei, Yang, Liu, Ye, Yuqian, Zhong, Shoumin, Lin, Yinyue, He, Sailing   +8 more
openaire   +2 more sources

Coherent Absorption Reveals Colors Hidden in a Grey Fabry–Pérot Cavity

Advanced Optical Materials, EarlyView.
A dielectric thin film shows colors depending on its thickness; this effect can be used to encode information normally accessible through single‐beam spectroscopy. We developed a method to conceal this kind of information, based on coating the dielectric with a matched conductor, that suppresses the color‐bearing thin‐film resonances.
Giuseppe E. Lio, Giulio Carotta, Lorenzo Lavista, Andrea Camposeo, Giacomo Venturi, Agnese Guernieri, Alessandro Pitanti, Simon A. R. Horsley, Giuseppe C. La Rocca, Alessandro Tredicucci, Simone Zanotto   +10 more
wiley   +1 more source

Stochastic dynamics of symmetry reductions to the parabolic nonlinear model in metamaterials

Results in Engineering
The Schrödinger model is investigated in this work using electromagnetic pulse waves in metamaterials with parabolic nonlinearity law. The model is first analysed using Lie symmetry analysis to obtain a better grasp of the system's symmetries and ...
Muhammad Idrees Afridi
doaj   +1 more source