Results 251 to 260 of about 309,856 (326)

Ultrasound‐Powered, Battery‐Free Implants via Triboelectric Energy Harvesting

open access: yesAdvanced Materials Technologies, EarlyView.
Ultrasound‐driven triboelectric nanogenerators (US‐TENGs) present a promising approach to battery‐free implants by combining body‐safe ultrasound with the material and structural versatility of TENGs. This review categorizes current US‐TENG research into long‐term and transient short‐term applications and discusses key challenges in materials, device ...
Youngwook Chung   +5 more
wiley   +1 more source

Priority-Aware Multi-Objective Task Scheduling in Fog Computing Using Simulated Annealing. [PDF]

open access: yesSensors (Basel)
Mangalampalli SS   +4 more
europepmc   +1 more source

High‐Transmission Mid‐Infrared Bandpass Filters using Hybrid Metal‐Dielectric Metasurfaces for CO2 Sensing

open access: yesAdvanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
This article presents a hybrid metal‐dielectric metasurface in transmission mode for mid‐infrared (MIR) spectroscopy. Composed of germanium on aluminium cylinders atop a calcium fluoride substrate, the metasurface achieves 80% transmission efficiency at λ = 2.6 µm with a narrow full‐width‐half‐maximum of 0.4 µm.
Amr Soliman   +5 more
wiley   +1 more source

Fiber Bragg Gratings with Micro‐Engineered Temperature Coefficients

open access: yesAdvanced Optical Materials, Volume 13, Issue 8, March 13, 2025.
Fiber Bragg gratings (FBGs) are intrinsically responsive to temperature and strain simultaneously. In this research, low‐loss FBGs with micro‐engineered temperature coefficients are fabricated, utilizing refractive index liquid‐filled microchannels in the cladding.
Zipei Song   +8 more
wiley   +1 more source

Step Function in Momentum Space by a Metagrating

open access: yesAdvanced Optical Materials, EarlyView.
This work demonstrates how the symmetry of the angular transmittance could be broken by a metagrating where the diffraction channels alleviate the requirement for enforcing absorbance. The metagrating retroreflects incident waves with positive incidence angles and transmits waves with negative incidence angles.
Mahmoud A. A. Abouelatta   +3 more
wiley   +1 more source

Development of High‐Performance Multilayer Monochromators

open access: yesAdvanced Optical Materials, EarlyView.
Detailed insights into the optical and multilayer design of Double Multilayer Monochromators (DMM) are presented and fully characterized, including key optimization strategies and solutions to fabrication challenges. By integrating in‐house Ion Beam Figuring and a high uniformity multilayer coating process, the developed DMMs achieve high reflectivity,
Wadwan Singhapong   +11 more
wiley   +1 more source

Home - About - Disclaimer - Privacy