Results 271 to 280 of about 2,239,452 (379)

Making social sciences foundational to academic medicine. [PDF]

open access: yesPLoS Med
Sadjadi S   +3 more
europepmc   +1 more source

Extreme Terahertz Nonlinearity of AlGaN/GaN‐Based Grating‐Gate Plasmonic Crystals

open access: yesAdvanced Optical Materials, EarlyView.
Plasmonic crystals based on grating‐gated 2D electron gas in AlGaN/GaN heterostructures provide a platform for strong light‐matter interaction. Pump‐probe experiments revealed strong terahertz nonlinearity leading to 45% increase in transmission at a fluence below 350 nJ cm−2.
Pavlo Sai   +14 more
wiley   +1 more source

Spherical and Aspherical Lenses for Boosting the Performance of Terahertz Imaging Systems

open access: yesAdvanced Photonics Research, EarlyView.
This study investigates the enhancement of terahertz (THz) detection through the terajet effect using mesoscale dielectric lenses of various geometries. Spherical, aspherical, and cubic polytetrafluoroethylene lenses are evaluated at 0.15 and 0.3 THz, demonstrating significant improvements in responsivity and noise reduction.
El Hadj Abidi   +7 more
wiley   +1 more source

Reducing Personalization Time and Energy Cost While Walking Outdoors with a Portable Exosuit

open access: yesAdvanced Robotics Research, EarlyView.
Rapid Real‐World Optimization! An AF‐based human‐in‐the‐loop optimization strategy rapidly personalizes a portable hip extension exosuit for incline walking. Real‐time Bayesian optimization of assistive force significantly reduces metabolic energy—up to 16.2%—while converging in just 3 min 24 s.
Kimoon Nam   +7 more
wiley   +1 more source

Deazaflavin‐Catalyzed Arylation of White Phosphorus with Aryl Bromides and Chlorides

open access: yesAdvanced Synthesis &Catalysis, EarlyView.
The 5‐aryldeazaflavin photocatalyst o‐Me‐dFl catalyzes the arylation of white phosphorus with aryl chlorides and bromides under near UV‐LED irradiation, affording triarylphosphines and tetraarylphosphonium salts. Nuclear magnetic resonance studies and density functional theory calculations offer insights into the reaction pathway.
Jannes Rückel   +4 more
wiley   +1 more source

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