Results 171 to 180 of about 3,858 (229)

Cellulose as a Platform for Biodegradable Metasurfaces: THz Characterization and Fabrication

open access: yesAdvanced Sustainable Systems, Volume 10, Issue 8, August 2026.
The demand for sustainable THz technologies has motivated the development of biodegradable, flexible devices based on ethyl cellulose. Metal‐backed EC metasurfaces were analytically designed and fabricated to achieve near‐perfect THz absorption. Reflection‐mode THz spectroscopy confirmed resonant absorption at 0.576 and 0.411 THz, demonstrating the ...
Edoardo Negri   +7 more
wiley   +1 more source

Determination of Complex Permittivity of Analytes Using Terahertz Metamaterials

open access: yesAdvanced Theory and Simulations, Volume 9, Issue 8, August 2026.
Resonance frequency shifts (Δf) and transmission variations (ΔT) in THz metamaterials exhibit distinct sensitivities to dielectric properties of overlaid analytes. By combining these responses within a contour map framework, the real permittivity (ε′) and loss tangent (tan δ) of liquid analytes can be simultaneously determined, providing a rapid route ...
Ruixiang Zhu   +6 more
wiley   +1 more source

Ultrafast Dynamics of Spin Current and Electron Temperature in Spintronic Terahertz Emitters

open access: yesAdvanced Science, Volume 13, Issue 45, 13 August 2026.
This work quantifies optical‐pump‐induced THz transmission variations to reveal electron and lattice temperature dynamics and presents time‐resolved THz spectral maps for sub‐picosecond analysis. A 63 ± 8 fs time lag between THz emission and laser excitation is identified, serving as an intrinsic parameter limiting the upper frequency of spintronic THz
Yifan Wang   +10 more
wiley   +1 more source

Measurement of Water Uptake and States in Nafion Membranes Using Humidity-Controlled Terahertz Time-Domain Spectroscopy. [PDF]

open access: yesACS Sustain Chem Eng
Ludlam GAH   +5 more
europepmc   +1 more source

Hexagonal Hollow‐Core Photonic Crystal Fiber for High‐Sensitivity Terahertz Glucose Detection

open access: yesJournal of Biophotonics, Volume 19, Issue 8, August 2026.
A novel hexagonal hollow‐core photonic crystal fiber (HPhCF) operating at 2.2 THz is proposed for rapid, non‐invasive detection of urinary glucose. The Zeonex‐based hollow‐core architecture enhances light‐analyte interaction, enabling 96.90% relative sensitivity while maintaining ultra‐low confinement loss and low effective material loss.
Mohammad Abdullah‐Al‐Shafi   +3 more
wiley   +1 more source

Frontiers of Bright CEP‐Stable Broadband Infrared Sources

open access: yesLaser &Photonics Reviews, Volume 20, Issue 16, 21 August 2026.
Bright CEP‐stable broadband infrared sources push the limits of ultrafast science by delivering exceptional brightness alongside few‐cycle durations and multi‐octave spectral coverage. This review highlights emerging architectures and nonlinear conversion strategies that scale power while preserving phase stability.
Ugaitz Elu, Jens Biegert
wiley   +1 more source

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