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Active Terahertz Metamaterials
Frontiers in Optics 2009/Laser Science XXV/Fall 2009 OSA Optics & Photonics Technical Digest, 2009 We demonstrate planar terahertz metamaterial devices enabling actively controllable transmission amplitude, phase, or frequency at room temperature via carrier depletion or photoexcitation in the semiconductor substrate or in semiconductor materials incorporated into the metamaterial structure.
Abul Kalam Azad +3 more
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Micromachines, 2022 Currently, terahertz metamaterials are studied in many fields, but it is a major challenge for a metamaterial structure to perform multiple functions. This paper proposes and studies a switchable multifunctional multilayer terahertz metamaterial.
Zhanshuo Sun +5 more
doaj +2 more sources
Advanced Devices & Instrumentation, 2022 Terahertz (THz) waves have exhibited promising applications in imaging, sensing, and communications, especially for the next-generation wireless communications due to the large bandwidth and abundant spectral resources.
Hongyang Xing +5 more
doaj +2 more sources
Asymmetric planar terahertz metamaterials [PDF]
Optics Express, 2010 We report an experimental observation of three distinct resonances in split ring resonators (SRRs) for both vertical and horizontal electric field polarizations at normal incidence by use of terahertz time domain spectroscopy.
Al-Naib, Ibraheem A. I. +3 more
core +4 more sources
Metamaterials in the Terahertz Regime
IEEE Photonics Journal, 2009 Metamaterials are artificial composites that acquire their electromagnetic properties from embedded subwavelength metallic structures. In theory, the effective electromagnetic properties of metamaterials at any frequency can be engineered to take on ...
Withawat Withayachumnankul, Derek Abbott
doaj +4 more sources
Milliwatt terahertz harmonic generation from topological insulator metamaterials [PDF]
Light: Science & Applications, 2022 Topological insulator metamaterials bring nonlinear terahertz photonic technology a step closer by producing a third-harmonic output power close to a milliwatt.
Klaas-Jan Tielrooij +18 more
doaj +2 more sources
Design and Print Terahertz Metamaterials Based on Electrohydrodynamic Jet
Micromachines, 2023 Terahertz metamaterials are some of the core components of the new generation of high-frequency optoelectronic devices, which have excellent properties that natural materials do not have. The unit structures are generally much smaller than the wavelength,
Tong Yang, Xinyu Li, Bo Yu, Cheng Gong
doaj +2 more sources
A Review: Active Tunable Terahertz Metamaterials
Advanced Photonics ResearchThe diversity and practicability of terahertz metamaterials have experienced rapid development in the past decade due to the increasing demand for various devices. This topic has attracted significant interest from researchers.
Jining Li +8 more
doaj +2 more sources
Terahertz metamaterial with asymmetric transmission [PDF]
Physical Review B, 2009 We show for the first time that a planar metamaterial, an array of coupled metal split-ring resonators with a unit cell lacking mirror symmetry, exhibits asymmetric transmission of terahertz radiation (0.25-2.5 THz) propagating through it in opposite directions.
Singh, R. +8 more
openaire +6 more sources
Terahertz Metamaterials for Biosensing Applications: A Review
Biosensors, 2023 In recent decades, THz metamaterials have emerged as a promising technology for biosensing by extracting useful information (composition, structure and dynamics) of biological samples from the interaction between the THz wave and the biological samples ...
Wu Zhang +6 more
semanticscholar +4 more sources