Results 31 to 40 of about 242,895 (228)

Transparent thermal insulation silica aerogels

open access: yesNanoscale Advances, 2020
This review explores the synthesis and properties of transparent thermal insulation silica aerogels.
Jieyu Wang, Donald Petit, Shenqiang Ren
openaire   +3 more sources

Hypervelocity impacts on thin brittle targets: experimental data and SPH simulations [PDF]

open access: yes, 2005
The meteoroids and debris environment play an important role in the reduction of spacecraft life time. Ejecta or secondary debris, are produced when a debris or a meteoroid impact a spacecraft surface.
Chevalier, Jean-Marc   +4 more
core   +2 more sources

Recent Advances in Research on the Synthetic Fiber Based Silica Aerogel Nanocomposites

open access: yesNanomaterials, 2017
The presented paper contains a brief review on the synthesis and characterization of silica aerogels and its nanocomposites with nanofibers and fibers based on a literature study over the past twenty years and my own research.
Agnieszka Ślosarczyk
doaj   +1 more source

Nitrogen sorption as a tool for the characterisation of polysaccharide aerogels [PDF]

open access: yes, 2011
Supercritically dried aerogels of several polysaccharides (chitin, chitosan, alginate, alginic acid, k- carrageenan, and agar) have been characterised by physisorption ofN2. Surface areas as high as 570m2 g−1 have been measured.
Boissière, M.   +7 more
core   +3 more sources

Preparation of Silica Aerogel and Its Adsorption Performance to Organic Molecule

open access: yesAdvances in Materials Science and Engineering, 2014
Hydrophobic and lipophilic silica aerogel was prepared from water-glass by gelling, aging, silylation, and drying under atmospheric pressure and characterized by FT-IR and SEM.
Hong-xin Shi   +3 more
doaj   +1 more source

Eco-friendly approach for preparation of water-based superhydrophobic silica aerogels via ambient pressure drying

open access: yesMaterials Research Express, 2021
In this work, superhydrophobic methyltrimethoxysilane (MTMS)-based silica aerogels were fabricated via water-based sol–gel reaction by ambient pressure drying (APD) method in the presence of surfactant.
Xiaoling Yuan   +5 more
doaj   +1 more source

Universal Behaviour of the Superfluid Fraction and Tc of He-3 in 99.5% Open Aerogel

open access: yes, 1999
We have investigated the superfluid transition of He-3 in a 99.5% porosity silica aerogel. This very dilute sample shows behaviour intermediary between bulk He-3 and He-3 confined to the denser aerogels previously studied.
A. A. Abrikosov   +24 more
core   +1 more source

Reinforced silica-carbon nanotube monolithic aerogels synthesised by rapid controlled gelation [PDF]

open access: yes, 2018
This work introduces a new synthesis procedure for obtaining homogeneous silica hybrid aerogels with carbon nanotube contents up to 2.50 wt.%. The inclusion of nanotubes in the highly porous silica matrix was performed by a two-step sol–gel process ...
Díaz-Fraile, José A.   +8 more
core   +2 more sources

Deformation of Silica Aerogel During Fluid Adsorption

open access: yes, 2005
Aerogels are very compliant materials - even small stresses can lead to large deformations. In this paper we present measurements of the linear deformation of high porosity aerogels during adsorption of low surface tension fluids, performed using a ...
D. R. Daughton   +7 more
core   +1 more source

Predicted and in situ performance of a solar air collector incorporating a translucent granular aerogel cover [PDF]

open access: yes, 2012
This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2012 ElsevierThere is an opportunity to improve the efficiency of flat plate solar air collectors by replacing their ...
Athienitis   +44 more
core   +1 more source

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