Results 151 to 160 of about 430,280 (280)

Mechanics of knee meniscus results from precise balance between material microstructure and synovial fluid viscosity. [PDF]

open access: yesPLoS One
Afanador CAS   +7 more
europepmc   +1 more source

Dark‐State Guided‐Mode Resonance Sensors: Engineering Miniature Sensing Platforms

open access: yesAdvanced Optical Materials, EarlyView.
This research introduces compact guided‐mode resonance sensing using Gaussian‐beam‐induced symmetry breaking to excite dark states. The method generates high‐quality resonance signals in a small area, demonstrating a sensor with 128 micro‐cells and 200 nm RIU−1 sensitivity, showing potential for lab‐on‐chip and biosensing applications.
Yeong Hwan Ko   +2 more
wiley   +1 more source

Submicrosecond Electric Switching of Large Birefringence in the Isotropic Phase of Ferroelectric Nematics

open access: yesAdvanced Optical Materials, EarlyView.
We demonstrate ultra‐fast and efficient electro‐optical switching using the isotropic phase of ferroelectric nematic liquid crystals. A moderate electric field induces a transition to polar ferroelectric nematic order, producing large field‐induced birefringence with sub‐microsecond switch‐on and switch‐off times. This advance enables new opportunities
Kamal Thapa   +2 more
wiley   +1 more source

Nanoimprinting of Mesoporous Titania: Direct Patterning and Refractive Index Control in the Visible

open access: yesAdvanced Optical Materials, EarlyView.
Nanoimprinted mesoporous TiO₂ (pTiO₂) films are demonstrated as high‐resolution optical materials with tunable porosity, refractive index, and mechanical response. Sub‐micron patterning of planar optics is shown alongside a refractive index contrast Δn ≈0.7.
Matthew Panipinto   +4 more
wiley   +1 more source

Rigidity of Stratospheric Travelling Waves. [PDF]

open access: yesCommun Math Phys
Constantin A, Shao H, Zhu H.
europepmc   +1 more source

Advanced Emissivity Tuning Via Femtosecond Laser Surface Engineering

open access: yesAdvanced Optical Materials, EarlyView.
Femtosecond laser surface processing (FLSP) is employed to fabricate titanium‐based metamaterials with engineered micro/nano‐scale features that exhibit spectrally selective and omnidirectional thermal emissivity. By integrating advanced ellipsometry, electromagnetic modeling, and compositional analysis, the work reveals resonance‐driven emissivity ...
Zahra Kamali Khanghah   +8 more
wiley   +1 more source

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