Results 21 to 30 of about 497,744 (196)

Activation volumes in CoPtCr-SiO2 perpendicular recording media [PDF]

open access: yes, 2005
CoPtCr-SiO2 perpendicular recording media with varying levels of SiO2 were examined by two different methods to determine the activation volume. The first is based on the sweep-rate dependence of the remanence coercivity using Sharrock's equation.
Dutson, J D   +4 more
core   +1 more source

Photoconverter with luminescent concentrator. Matrix material

open access: yesSemiconductor Physics, Quantum Electronics & Optoelectronics, 2019
Materials, promising for production of luminescent solar energy concentrators were considered. It is known that the silicon oxide matrix is transparent within the spectral range where Sun emits light.
M.R. Kulish
doaj   +1 more source

Glass in the submarine section of the HSDP2 drill core, Hilo, Hawaii [PDF]

open access: yes, 2004
The Hawaii Scientific Drilling Project recovered ~3 km of basalt by coring into the flank of Mauna Kea volcano at Hilo, Hawaii. Rocks recovered from deeper than ~1 km were deposited below sea level and contain considerable fresh glass. We report electron
Baker, Michael   +4 more
core   +1 more source

Fabrication SiO2 -NiO foam via replication technique for steam methane reforming catalyst at low temperatures [PDF]

open access: yes, 2021
Porous ceramic is a type of material that has highly open and partially interconnected pores. It has a wide range of applications, which include catalyst support, filtration, adsorption and separation.The aim of this study is to fabricate Silica-Nickel
Muda, Rizamarhaiza
core  

Influence of Scattering Enhancement Particles CaCO3, CaF2, SiO2 and TiO2 on Color Uniformity of White LEDs

open access: yesAdvances in Electrical and Electronic Engineering, 2016
In this paper, the influence of scattering enhancement particles CaCO3, CaF2, SiO2 and TiO2, adding to YAG:Ce phosphor compounding, on color uniformity of white LEDs (W-LEDs) was presented.
Nguyen Huu Khanh Nhan   +2 more
doaj   +1 more source

Hydrophilicity of Silica Nano-Porous Thin Films: Calcination Temperature Effects [PDF]

open access: yesJournal of Nanostructures, 2017
In this research work, silica nano-porous thin films were deposited on glass substrates by layer by layer method. The thin films were calcinated at various calcination temperatures (200, 300, 400, and 500 °C).
Akbar Eshaghi, Mohammadreza Mojab
doaj   +1 more source

Microstructural properties of non-supported microporous ceramic membrane top-layers obtained by the sol-gel process [PDF]

open access: yes, 1996
Dried and calcined non-supported membrane top-layers of SiO2, SiO2/TiO2, SiO2/ZrO2 (10, 20 and 30 mol% TiO2 and ZrO2, respectively) and SiO2/Al2O3 (10 mol% AlO1.5) were prepared using acid catalyzed hydrolysis and condensation of alkoxides in ethanol ...
Burggraaf, A.J.   +3 more
core   +2 more sources

Overview of the sensitivity of Ge- and Al-doped silicon dioxide optical fibres to ionizing radiation [PDF]

open access: yes, 2012
This paper reviews the thermoluminescence sensitivity of Ge- and Al- doped SiO2 optical fibre subjected to various ionizing radiations. It is found that the Ge- doped SiO2 optical fiber has the thermoluminescence response superior to Al-doped SiO2 ...
Hashim, Suhairul   +3 more
core   +1 more source

Defects in SiO2 as the possible origin of near interface traps in the SiC∕SiO2 system: A systematic theoretical study [PDF]

open access: yes, 2005
A systematic study of the level positions of intrinsic and carbon defects in SiO2 is presented, based on density functional calculations with a hybrid functional in an alpha-quartz supercell.
A. Gali   +18 more
core   +1 more source

Surface modification of an Al2O3/SiO2 based ceramic treated with CO2, Nd:YAG, excimer and high power diode lasers for altered wettability characteristics [PDF]

open access: yes, 1998
Interaction of CO2, Nd:YAG, excimer and high power diode laser (HPDL) radiation with the surface of an Al2O3/SiO2 based ceramic was found to affect significant changes in the wettability characteristics of the material.
Lawrence, Jonathan   +2 more
core   +1 more source

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