Results 21 to 30 of about 549,979 (269)

Analysis of factors affecting temperature uniformity of high-temperature electrostatic chucks in CVD equipment

open access: yesXibei Gongye Daxue Xuebao
The electrostatic chuck is a semiconductor process equipment that uses electrostatic adsorption force to attach a wafer to a surface and controls the surface temperature of the wafer through thermal conduction as the main temperature control method.
DING Yankai   +3 more
doaj   +1 more source

High Hermeticity and Long Lifetime MEMS Alkali Vapor Cells for Atomic Sensors

open access: yesInventions
Most chip-scale atomic sensors in quantum precision measurement fields require MEMS alkali vapor cells with long lifetime operation, which is mainly restricted by the significant reduction in alkali metal in the vapor cells.
Xinghui Li   +5 more
doaj   +1 more source

Optimized design of the ion optics based on the over-perveance characteristics of the beam current

open access: yesAIP Advances, 2023
To illustrate the erosion mechanism of the edge aperture by high-energy ions, a three-dimension simulation model was established, and a particle-in-cell method was applied in tracking the hitting processes as well as a Monte Carlo collision method was ...
Juanjuan Chen   +5 more
doaj   +1 more source

Anharmonic behavior and structural phase transition in Yb2O3

open access: yesAIP Advances, 2013
The investigation of structural phase transition and anharmonic behavior of Yb2O3 has been carried out by high-pressure and temperature dependent Raman scattering studies respectively.
Sugandha Dogra Pandey   +4 more
doaj   +1 more source

Analysis of the behavior of magnesium and CO vapor in the carbothermic reduction of magnesia in a vacuum

open access: yesJournal of Magnesium and Alloys, 2014
The aim of this paper is to experimentally investigate the behavior of magnesium and carbon monoxide vapor in the carbothermic reduction of magnesia at condensing zone temperatures ranging from 923 K to 1223 K.
Cheng-bo Yang   +5 more
doaj   +1 more source

Experience With Performing Rheocarna Therapy via the Single‐Needle Method for Treatment of Chronic Limb‐Threatening Ischemia

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction This study investigated the safety and efficacy of single‐needle Rheocarna therapy for chronic limb‐threatening ischemia (CLTI) with wounds. Methods Six patients with CLTI involving ulcers unresponsive to revascularization underwent single‐needle Rheocarna treatment.
Yasutaka Yamauchi   +9 more
wiley   +1 more source

Design and experimental study of a high-efficiency high-voltage power supply for travelling wave tube

open access: yesDianzi Jishu Yingyong
This paper presents a half-bridge LLC resonant multistage high voltage converter circuit for 6~18 GHz 50 W ultra-small microwave power module. Through the design of half-bridge LLC resonant converter and the research of improved feedback loop based on ...
Liu Qihui   +4 more
doaj   +1 more source

Vacuum waves [PDF]

open access: yesPhysics Letters B, 2013
As an example of the unification of gravitation and particle physics, an exact solution of the five-dimensional field equations is studied which describes waves in the classical Einstein vacuum. While the solution is essentially 5D in nature, the waves exist in ordinary 3D space, and may provide a way to test for an extra dimension.
openaire   +3 more sources

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

Polymers in a Vacuum

open access: yesPhysical Review Letters, 2007
4 pages, 3 figures, two column ...
openaire   +3 more sources

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