A comprehensive survey: The role of terahertz communication systems in urban infrastructure development

Measurement, Год журнала: 2025, Номер unknown, С. 117318 - 117318

Опубликована: Март 1, 2025

Язык: Английский

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Reconfigurable Terahertz Metamaterials Based on the Refractive Index Change of Epitaxial Vanadium Dioxide Films Across the Metal–Insulator Transition

Nanomaterials, Год журнала: 2025, Номер 15(6), С. 439 - 439

Опубликована: Март 13, 2025

The intrinsic metal–insulator transition (MIT) of VO2 films near room temperature presents significant potential for reconfigurable metamaterials in the terahertz (THz) frequency range. While previous designs primarily focused on changes electrical conductivity across MIT, accompanying dielectric due to mesoscopic carrier confinement effect have been largely unexplored. In this study, we integrate asymmetric split-ring resonators 35 nm epitaxial film and identify a “dielectric window” at early stages MIT. This is characterized by redshift resonant without degradation quality. phenomenon attributed an inhomogeneous phase film, which induces purely change onset while occurs later, slightly above percolation threshold. Our findings provide deeper insights into THz properties pave way dielectric-based, hybrid metamaterials.

Язык: Английский

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Dispersion properties of surface polaritons at hypercrystal-homogeneous media interface under an external magnetic field

Waves in Random and Complex Media, Год журнала: 2025, Номер unknown, С. 1 - 24

Опубликована: Фев. 11, 2025

Язык: Английский

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Millimeter-wave reconfigurable antenna based on VO2 ink achieved by a simple process

Materials & Design, Год журнала: 2025, Номер unknown, С. 113583 - 113583

Опубликована: Янв. 1, 2025

Язык: Английский

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A Wideband, High-Performance Cpw-Fed Mimo Antenna with Periodic Pbg Structures for Short-Link Terahertz Applications

Опубликована: Янв. 1, 2025

Язык: Английский

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Convolutional neural network-assisted design and validation of terahertz metamaterial sensor

Materials & Design, Год журнала: 2025, Номер unknown, С. 113871 - 113871

Опубликована: Март 1, 2025

Язык: Английский

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Tetrafluorinated ionic organic terahertz crystals

Applied Physics Reviews, Год журнала: 2025, Номер 12(1)

Опубликована: Март 1, 2025

Developing new organic crystals for efficient broad terahertz (THz) wave generation remains challenging, as multiple critical material properties must be achieved simultaneously within a single crystal. In this work, we introduce series of nonlinear optical salt tailored THz generators. The newly designed fluorinated cationic chromophore, 6-fluoro-2-(4-hydroxystyryl)-1-methylquinolinium (OH6FQ), has been incorporated with various or non-fluorinated anions into six different ionic crystals. Notably, the tetrafluorinated crystals, composed OH6FQ cations and trifluorinated anions, meet essential requirements generation, including large macroscopic nonlinearity, optimal facet orientation in as-grown mm-size, plate-like morphology, relatively low absorption across both entire-molecular phonon anion-stretching vibration regions. These exhibit over 20 times higher optical-to-THz amplitude conversion efficiency compared to inorganic ZnTe, bandwidth extending up 16 THz. To best our knowledge, is first report showing promising potential diverse photonic applications.

Язык: Английский

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High-Gain Radiating Sun-Shaped Silicon-Based Wideband with Defected Ground structured Dual-Port MIMO Antenna Operating at 3.6 THz for 6G Terahertz Applications

Nano Communication Networks, Год журнала: 2025, Номер unknown, С. 100572 - 100572

Опубликована: Март 1, 2025

Язык: Английский

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Performance Analysis of Graphene Metamaterial Absorber for Terahertz Regime

Plasmonics, Год журнала: 2025, Номер unknown

Опубликована: Май 9, 2025

Язык: Английский

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Mid-infrared photodetector spectrometer concept based on ultrathin all-dielectric metamaterial with azimuth-incidence-angle tuned perfect optical absorption: Design and analysis

Materials & Design, Год журнала: 2024, Номер 245, С. 113298 - 113298

Опубликована: Сен. 1, 2024

Язык: Английский

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