Recent Advances in Non-Traditional Elastic Wave Manipulation by Macroscopic Artificial Structures
Applied Sciences, 2020 Metamaterials are composed of arrays of subwavelength-sized artificial structures; these architectures give rise to novel characteristics that can be exploited to manipulate electromagnetic waves and acoustic waves. They have been also used to manipulate
Jeonghoon Park, Dongwoo Lee, Junsuk Rho
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Photonic Time Crystals and Time-Varying Electromagnetic Metamatter: A New Direction for Ultrafast Tunable Photonic and Microwave Materials and Devices. [PDF]
Adv Sci (Weinh)Photonic time crystals (PTCs) are systems in which electromagnetic parameters are modulated periodically in time, producing momentum bandgaps via temporal scattering rather than spatial Bragg processes. This review examines the theoretical frameworks, modeling, and computational tools for time‐varying media, and summarizes experimental demonstrations ...
Patel RK +3 more
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Electromagnetic Reconfiguration Using Stretchable Mechanical Metamaterials
Advanced Science, 2023 Response to environmental thermomechanical inputs in applications that range from wearable electronics to aerospace structures necessitates agile communication systems driven by reconfigurable electromagnetic structures.
Maria Sakovsky +2 more
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Bianisotropic Effective Parameters of Optical Metamagnetics and Negative-Index Materials [PDF]
, 2011 Approaches to the adequate homogenization of optical metamaterials are becoming more and more complex, primarily due to an increased understanding of the role of asymmetric electrical and magnetic responses, in addition to the nonlocal effects of the ...
Joshua D. Borneman +9 more
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Time-varying metamaterials and metasurfaces for antennas and propagation applications
, 2021 In this contribution we present the most recent results from our group about the opportunities offered by time-varying metamaterials and metasurfaces for conceiving antenna systems and devices exhibiting artificial non-reciprocity, frequency conversion ...
Bilotti F. +5 more
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Engineering Metamaterials and Photonic Crystals in the Microwave Regime: from Superlensing to Slow-Light [PDF]
, 2009 The following work involves the study of electromagnetic properties at the microwave frequency range of a class of materials called Metamaterials. A metamaterial is an artificial composite material that exhibits an electromagnetic response unlike any ...
Savo, Salvatore
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Metamaterials for light rays: ray optics without wave-optical analog in the ray-optics limit [PDF]
, 2009 Volumes of sub-wavelength electromagnetic elements can act like homogeneous materials: metamaterials. In analogy, sheets of optical elements such as prisms can act ray-optically like homogeneous sheet materials.
Hamilton, A.C. +3 more
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Quantum Thermodynamic Transformation Optics: A Unified Framework for Energy and Entropy With Application to the Casimir Force in Dissipative Metamaterials. [PDF]
NanophotonicsGeometry in transformation optics can be extended to control quantum–thermal fluctuations, enabling redistribution of energy, entropy, and Casimir pressure in dissipative metamaterials. ABSTRACT A novel concept, quantum thermodynamic transformation optics (QTTO), is introduced as a theoretical framework integrating transformation optics with ...
Sadeghi MM, Sarısaman M.
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Micromachines, 2021 Looking back on the development of metamaterials in the past 20 years, metamaterials have gradually developed from three-dimensional complex electromagnetic structures to a two-dimensional metasurface with a low profile, during which a series of ...
Sisi Luo +7 more
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Trapped-Mode Resonances in Planar Metamaterials with High Structural Symmetry
, 2008 We propose a new type of planar metamaterials that can support high-Q electromagnetic modes, namely trapped modes, excitation of which is polarization ...
Fedotov, V.A. +8 more
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