Results 11 to 20 of about 2,805,233 (318)

High-Efficiency High-NA Metalens Designed by Maximizing the Efficiency Limit

open access: yesCLEO 2024, 2023
We identify optimal system parameters that maximize the upper limit of transmission efficiency and then perform inverse design to find high-NA wide-field-of-view metalenses with a record-high efficiency (98% transmission, 92% Strehl ratio, NA = 0.9).
Li, Shiyu, Lin, Ho-Chun, Hsu, Chia Wei
openaire   +3 more sources

Surface Hardening of Machine Parts Using Nitriding and TiN Coating Deposition in Glow Discharge

open access: yesMachines, 2020
Surface hardening of machine parts substantially improves their performance. The best results are obtained when combined hardening consists of surface nitriding and subsequent deposition of hard coatings.
Alexander Metel   +4 more
doaj   +1 more source

Burn threshold prediction for high efficiency deep grinding [PDF]

open access: yes, 2006
Burn threshold diagrams are useful for the prediction of thermally induced grinding damage and were originally developed to describe the conventional shallow cut grinding regime.
A. Bell   +5 more
core   +1 more source

An approach to harmonic load- and source-pull measurements for high-efficiency PA design [PDF]

open access: yes, 2004
High-efficiency power-amplifier design requires numerous efforts to investigate both input and output harmonic terminations effects. A simplified theoretical approach to clarify the relevance of such terminations is presented here, and design criteria to
Ernesto Limiti   +18 more
core   +1 more source

Effects of melanin from Sepiella Maindroni ink (MSMI) on the intestinal Microbiome of mice

open access: yesBMC Microbiology, 2017
Background By the search for new natural compounds with beneficial health effects, cephalopod ink has been considered as an attempt to develop new drugs and functional foods, which is an especially active field in Asia, where cephalopods are a major ...
Hui Dong   +4 more
doaj   +1 more source

Multi-Thoracolumbar Variations and NR6A1 Gene Polymorphisms Potentially Associated with Body Size and Carcass Traits of Dezhou Donkey

open access: yesAnimals, 2022
The number of thoracolumbar vertebrae is a quantitative trait positively correlated with the economic traits of livestock. More thoracolumbar vertebrae individuals could genetically be used to improve the livestock population, as more thoracolumbar ...
Ziwen Liu   +9 more
doaj   +1 more source

High-efficiency dielectrophoretic ratchet

open access: yesPhysical Review E, 2012
Brownian ratchets enable the use of thermal motion in performing useful work. They typically employ spatial asymmetry to rectify nondirected external forces that drive the system out of equilibrium (cf. running marbles on a shaking washboard). The major application foreseen for Brownian ratchets is high-selectivity fractionation of particle or molecule
Germs, W.C.   +7 more
openaire   +3 more sources

Electrical Discharge Machining of Al2O3 Using Copper Tape and TiO2 Powder-Mixed Water Medium

open access: yesTechnologies, 2022
Aluminum-based ceramics are used in industry to produce cutting tools that resist extreme mechanical and thermal load conditions during the machining of Ni-based and high-entropy alloys.
Sergey N. Grigoriev   +4 more
doaj   +1 more source

Design and performance of high-efficiency flexible thermoelectric Mmaterials and devices [PDF]

open access: yes, 2023
Thermoelectric (TE) materials, realizing the conversions between heat and electrics, have grasped intensive interest in temperature control, power generation, wearable electronics, and low-grade (< 400 K) waste heat recycling. Particularly, flexible TEs (
Sun, Shuai
core   +1 more source

Micro/nano manufacturing aircraft surface with anti-icing and deicing performances: An overview

open access: yesNanotechnology Reviews, 2023
The aircraft surface is prone to icing when flying under windward conditions. It is required to protect the aircraft surface from icing for flight safety. The anti-/deicing performance of aircraft surface is affected by the surface morphology and surface
Long Chen   +9 more
doaj   +1 more source

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