Results 111 to 120 of about 499,894 (252)

Aerogels in Aerospace: An Overview

Advances in Materials Science and Engineering, 2013
Aerogels are highly porous structures prepared via a sol-gel process and supercritical drying technology. Among the classes of aerogels, silica aerogel exhibits the most remarkable physical properties, possessing lower density, thermal conductivity ...
Nadiir Bheekhun, Abd. Rahim Abu Talib, Mohd Roshdi Hassan   +2 more
doaj   +1 more source

Helium condensation in aerogel: avalanches and disorder-induced phase transition

, 2005
We present a detailed numerical study of the elementary condensation events (avalanches) associated to the adsorption of $^4$He in silica aerogels. We use a coarse-grained lattice-gas description and determine the nonequilibrium behavior of the adsorbed ...
C. Gabay, E. Kierlik, F. Brochard, F. Detcheverry, G. Durin, G. Tarjus, J. Beamish, J. Cardy, M. L. Rosinberg, S. J. Gregg   +9 more
core   +1 more source

High temperature stability of transparent silica aerogels for solar thermal applications

APL Materials, 2019
Solar thermal energy systems combined with low-cost thermal storage provide a sustainable, dispatchable source of renewable energy. One approach to increase the attractiveness of these systems is to use high-performing solar transparent, thermally ...
Elise Strobach, B. Bhatia, Sungwoo Yang, Lin Zhao, E. Wang   +4 more
semanticscholar   +1 more source

Heterogeneous silica-polyimide aerogel-in-aerogel nanocomposites

Chemical Engineering Journal, 2022
Zuzanna Kantor, Tingting Wu, Zhihui Zeng, Sabyasachi Gaan, Sandro Lehner, Milijana Jovic, Anne Bonnin, Zhengyuan Pan, Zahra Mazrouei-Sebdani, Dorina M. Opris, Matthias M. Koebel, Wim J. Malfait, Shanyu Zhao   +12 more
openaire   +1 more source

Optical shock waves in silica aerogel

Optics Express, 2014
Silica aerogels are materials well suited for high power nonlinear optical applications. In such regime, the non-trivial thermal properties may give rise to the generation of optical shock waves, which are also affected by the structural disorder due to the porous solid-state gel.
S Gentilini, F Ghajeri, N Ghofraniha, A Di Falco, C Conti   +4 more
openaire   +5 more sources

Machine Learning Techniques to Analyze the Influence of Silica on the Physico-Chemical Properties of Aerogels

Gels
This study explores the application of machine learning techniques, specifically principal component analysis (PCA), to analyze the influence of silica content on the physical and chemical properties of aerogels.
Hamdi Chaouk, Emil Obeid, Jalal Halwani, Jack Arayro, Rabih Mezher, Omar Mouhtady, Eddie Gazo-Hanna, Semaan Amine, Khaled Younes   +8 more
doaj   +1 more source

Nanoindentation of Graphene-Reinforced Silica Aerogel: A Molecular Dynamics Study

Molecules, 2019
In the present work, we performed nanoindentation tests using molecular dynamics (MD) simulations on graphene, native silica aerogels, and single- and multi-layered graphene-reinforced silica aerogel nanocomposites.
Sandeep P. Patil
doaj   +1 more source

An Updated Overview of Silica Aerogel-Based Nanomaterials

Nanomaterials
Silica aerogels have gained much interest due to their unique properties, such as being the lightest solid material, having small pore sizes, high porosity, and ultralow thermal conductivity.
Adelina-Gabriela Niculescu, Dana-Ionela Tudorache, Maria Bocioagă, Dan Eduard Mihaiescu, Tony Hadibarata, Alexandru Mihai Grumezescu   +5 more
doaj   +1 more source

Adsorption of Fluconazole Drug on Silica Aerogel‌ by Immersion Method and Investigation of the Rate and Mechanism of Drug Release

Journal of Advanced Materials in Engineering, 2019
In this study, adsorption of fluconazole on silica aerogel was performed successfully by the immersion method in the 1% solution of fluconazole-ethanol at the ambient condition and without using the supercritical method.
M. Afrashi, D. Semnani, Z. Talebi
doaj  

Diatom-inspired silicification process for development of green flexible silica composite aerogels

Scientific Reports
In this study, we have developed novel biomimetic silica composite aerogels and cryogels for the first time, drawing inspiration from the natural diatom’s silicification process.
Valerie Tan, Florian Berg, Hajar Maleki
doaj   +1 more source