Results 181 to 190 of about 3,858 (229)

Giant Phonon‐Enhanced Terahertz Electro‐Optic Response in Ferroelectric van der Waals NbOX2 (X = Br, I)

open access: yesLaser &Photonics Reviews, Volume 20, Issue 16, 21 August 2026.
Van der Waals ferroelectric NbOX2 thin films exhibit phonon‐resonance enhanced electro‐optic responses, 332 pm/V at 3.1 THz (NbOI2) and 192 pm/V at 3.7 THz (NbOBr2), the highest among vdW materials, and show 4% non‐resonant SHG modulation together with resonant phonon‐enhancement under a 150 kV/cm THz pump.
Baolong Zhang   +3 more
wiley   +1 more source

First Principles Insights Into Emerging Perovskite Hydrides for Hydrogen Storage Applications: A Review

open access: yesphysica status solidi (RRL) – Rapid Research Letters, Volume 20, Issue 8, August 2026.
Perovskite hydrides are emerging as promising solid‐state hydrogen storage materials with tunable composition, structural versatility, and reversible hydrogen uptake. First‐principles DFT calculations offer important insights into their stability, electronic structure, thermodynamics, and storage performance.
Fikadu Takele Geldasa   +1 more
wiley   +1 more source

High‐Efficiency Generation of Vectorial Terahertz Beams via Surface‐Wave‐Excited Dielectric Metasurfaces

open access: yesSmall, Volume 22, Issue 46, 18 August 2026.
ABSTRACT Generating pre‐designed vectorial beams via on‐chip devices can yield many fascinating applications, but traditional diffraction‐based devices are bulky and inefficient. While plasmonic metasurfaces exhibit ultra‐compact sizes and deep‐subwavelength resolutions, their working efficiencies are limited by metallic losses.
Yu He   +8 more
wiley   +1 more source

Corneal hydration assessment indicator based on terahertz time domain spectroscopy. [PDF]

open access: yesBiomed Opt Express, 2020
Yao J   +9 more
europepmc   +1 more source

Optical Phased Arrays on Photonic Integrated Circuit Platforms: Challenges, Opportunities, and Future Applications

open access: yesNanophotonics, Volume 15, Issue 14, 27 July 2026.
Integrated optical phased arrays are emerging as scalable engines for solid‐state beam steering and programmable wavefront control. This Review maps the field from beam‐steering principles and core building blocks to material platforms, system‐level bottlenecks, and application frontiers, highlighting how heterogeneous integration, aperiodic ...
Jingwei Li   +7 more
wiley   +1 more source

Robust Bound States in the Continuum in Mirror‐Symmetric Terahertz Metasurfaces

open access: yesNanophotonics, Volume 15, Issue 14, 27 July 2026.
An ideal BIC, supported by local inversion symmetry in a mirror‐symmetric metasurface, transforms into a QBIC by introducing an asymmetry parameter α. This transition yields a finite Q‐factor following Q ∝ α−1.95, whereas the singular polarization state splits into two distinct circularly polarized points. This framework ensures robust BIC formation at
Die Zou   +9 more
wiley   +1 more source

Microscopic ion migration in solid electrolytes revealed by terahertz time-domain spectroscopy. [PDF]

open access: yesNat Commun, 2019
Morimoto T   +6 more
europepmc   +1 more source

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