Results 111 to 120 of about 157,954 (272)
Nanophotonics, 2022 The ability to actively manipulate free-space optical signals by using tunable metasurfaces is extremely appealing for many device applications. However, integrating photoactive semiconductors into terahertz metamaterials still suffers from a limited ...
Hu Yuze +5 more
doaj +1 more source
Terahertz active spatial filtering through optically tunable hyperbolic metamaterials
, 2012 We theoretically consider infrared-driven hyperbolic metamaterials able to spatially filtering terahertz radiation. The metamaterial is a slab made of alternating semiconductor and dielectric layers whose homogenized uniaxial response, at terahertz ...
Alekseyev +15 more
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Superconductor terahertz metamaterials [PDF]
, 2019 Terahertz metamaterials showcase tremendous potential for plethora of applications ranging from biochemical sensing, high-speed wireless communication, and efficient modulators. Conventional terahertz metamaterials are made of noble metals. Incorporating superconductors in terahertz metamaterials potentially provide unprecedented opportunities to ...
openaire +2 more sources
Advanced Electronic Materials, EarlyView.This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley +1 more source
Advanced Intelligent Discovery, EarlyView.Combining machine learning and probabilistic statistical learning is a powerful way to discover and design new materials. A variety of machine learning approaches can be used to identify promising candidates for target applications, and causal inference can help identify potential ways to make them a reality.
Jonathan Y. C. Ting, Amanda S. Barnard
wiley +1 more source
A tunable plasmonic refractive index sensor with nanoring-strip graphene arrays
, 2018 In this paper, a tunable plasmonic refractive index sensor with nanoring-strip graphene arrays is numerically investigated by the finite difference time domain (FDTD) method.
Cen, Chunlian +10 more
core +1 more source
Carbon Energy, EarlyView.Traditional carbon materials show limited high‐temperature oxidation resistance, which becomes pronounced above 673 K and significantly restricts their practical applicability. To address this challenge, enhancing polarization loss and leveraging its negative temperature dependence to offset the temperature‐induced increase in conductance loss are ...
Yang Li +9 more
wiley +1 more source
Energy Coupled Mode Theory for an arbitrary number of resonators
, 2014 There is recent interest in the inter and intra element interactions of metamaterial unit cells. To calculate the effects of these interactions which can be substantial, an ab initio general coupled mode equation, in the form of an eigenvalue problem, is
Elnaggar, Sameh Y. +2 more
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Surface plasmons in terahertz metamaterials
Optics Express, 2008 We characterize terahertz metamaterials by applying apertureless near-field microscopy with a bandwidth that covers the entire spectral response of the structures. The observations agree with the interpretation of the fundamental mode of the metamaterial. But the high frequency resonance shows properties that deviate from the common interpretation.
G, Acuna +5 more
openaire +2 more sources
Scale‐Invariant Waveguiding in Flatland
Exploration, EarlyView.The study introduces scale‐invariant metasurface waveguides with uniform modal field distribution and an effective index independent of the core width. By leveraging spatial symmetry and fine‐tuning mode profiles, the design is validated through near‐field measurements in the C band, offering potential applications in flat optics, sensing, and ...
Zhixia Xu +5 more
wiley +1 more source