Results 31 to 40 of about 119,525 (367)
Scalable-manufactured randomized glass-polymer hybrid metamaterial for daytime radiative cooling
Science, 2017 The lazy way to keep cool in the sun Passive radiative cooling requires a material that radiates heat away while allowing solar radiation to pass through. Zhai et al.
Yao Zhai +7 more
semanticscholar +1 more source
Superconducting metamaterials [PDF]
Applied Physics Letters, 2005 Evanescent wave amplification has been predicted under the ideal condition that the index of refraction, n=−1+i0 precisely, but is difficult to observe in practice because current metamaterials suffer from high losses. We present experimental results on a metamaterial that employs superconducting Nb metals and low-loss dielectric materials.
Michael Ricci +2 more
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Hybrid acousto-electromagnetic metamaterial superconductors [PDF]
Physica C 577, 1353730 (2020), 2020 Recent theoretical and experimental studies demonstrated that an electromagnetic metamaterial approach is capable of drastically increasing the critical temperature Tc of composite metamaterial superconductors. This progress was achieved by engineering the frequency-dependent dielectric response function of the metamaterial. Here we further extend this
arxiv +1 more source
IEEE Access, 2021 A deep learning model trained under a specific operating condition of the gearbox often experiences an overfitting problem, which makes it impossible to diagnose faults under different operating conditions.
Jong Moon Ha, Byeng D. Youn
doaj +1 more source
Viscoelastic Snapping Metamaterials [PDF]
Journal of Applied Mechanics, 2019 Abstract Mechanical metamaterials are artificial composites with tunable advanced mechanical properties. Particularly, interesting types of mechanical metamaterials are flexible metamaterials, which harness internal rotations and instabilities to exhibit programable deformations.
Joris Busink +3 more
openaire +4 more sources
Reports on Progress in Physics, 2023 Abstract Mechanical metamaterials, also known as architected materials, are rationally designed composites, aiming at elastic behaviors and effective mechanical properties beyond (‘meta’) those of their individual ingredients—qualitatively and/or quantitatively.
Richard Craster +3 more
openaire +3 more sources
Electrically tunable harmonics in time-modulated metasurfaces for wavefront engineering
New Journal of Physics, 2018 Modulation of metasurfaces in time gives rise to several exotic space–time scattering phenomena by breaking the reciprocity constraint and generation of higher-order frequency harmonics. We introduce a new design paradigm for time-modulated metasurfaces,
Mohammad Mahdi Salary +2 more
doaj +1 more source
IEEE Access, 2020 In this review paper, a comprehensive study on the concept, theory, and applications of composite right/left-handed transmission lines (CRLH-TLs) by considering their use in antenna system designs have been provided.
M. Alibakhshikenari +11 more
semanticscholar +1 more source
Broadband Metamaterial Absorbers
Advanced Optical Materials, 2018 The recent rise of metamaterials opens new opportunities for absorbers due to their designed electrodynamic properties and effects, allowing the creation of materials with effective values of permittivity and permeability that are not available in ...
P. Yu +9 more
semanticscholar +1 more source