Results 81 to 90 of about 13,503 (229)

Adsorption of a fluid in an aerogel: integral equation approach

open access: yes, 2001
We present a theoretical study of the phase diagram and the structure of a fluid adsorbed in high-porosity aerogels by means of an integral-equation approach combined with the replica formalism.
Kierlik, E.   +3 more
core   +1 more source

Safety of Sodium‐Ion Batteries: Evaluation and Perspective from Component Materials to Cells, Modules, and Packs

open access: yesAdvanced Energy Materials, EarlyView.
This review provides a bottom‐up evaluation of sodium‐ion battery safety, linking material degradation mechanisms, cell engineering parameters, and module/pack assembly. It emphasizes that understanding intrinsic material stability and establishing coordinated engineering control across hierarchical levels are vital for preventing degradation coupling ...
Won‐Gwang Lim   +5 more
wiley   +1 more source

A temperature-controlled device for volumetric measurements of Helium adsorption in porous media

open access: yes, 2007
We describe a set-up for studying adsorption of helium in silica aerogels, where the adsorbed amount is easily and precisely controlled by varying the temperature of a gas reservoir between 80 K and 180 K.
A.P.Y. Wong   +14 more
core   +3 more sources

SANS study of hybrid silica aerogels under "in situ" uniaxial compression [PDF]

open access: yes, 2008
We have modified the inorganic silica network of aerogels with polydimethylsiloxane (PDMS), a hydroxyl-terminated polymer, to obtain an organic modified silicate (ORMOSIL). Reactions were assisted by high-power ultrasounds.
Esquivias Fedriani, Luis María   +5 more
core   +1 more source

A Leaf‐Inspired Janus‐Structured Triboelectric‐Moisture Hybrid Energy Harvester

open access: yesAdvanced Energy Materials, EarlyView.
This study proposes a bioinspired Janus structured energy‐leaf with hybrid triboelectric‐moisture hybrid energy harvesters. This hybrid energy harvester is demonstrated in an intelligent emergency system for effective distress signaling and evacuation guiding during potential crises.
Liang Wei   +10 more
wiley   +1 more source

THE PERMEABILITY OF SILICA AEROGELS

open access: yes, 2023
Silica aerogels have many potential applications, including as host matrices for chemical species or nuclear waste storage. For these applications, the permeability is a key parameter and data show that the silica aerogels have poor permeability (~10-60 nm 2).
Woignier, Thierry   +5 more
openaire   +1 more source

Aerogels: Tailor-made Carriers for Immediate and Prolonged Drug Release

open access: yesKONA Powder and Particle Journal, 2014
The potential of inorganic polymeric materials – silica aerogels – as tailor-made drug carriers is discussed. It is shown that the dissolution rate of poorly soluble drugs can be significantly changed through
Irina Smirnova   +2 more
doaj   +1 more source

Gas Transport in Porous Media: Simulations and Experiments on Partially Densified Aerogels

open access: yes, 1995
The experimental density dependence of gas (argon and nitrogen) permeability of partially densified silica aerogels in the Knudsen regime is quantitatively accounted for by a computer model. The model simulates both the structure of the sintered material
A Hasmy   +7 more
core   +1 more source

Marine silicon for biomedical sustainability

open access: yesBMEMat, EarlyView.
Schematic illustrating marine silicon for biomedical engineering. Abstract Despite momentous divergence from oceanic origin, human beings and marine organisms exhibit elemental homology through silicon utilization. Notably, silicon serves as a critical constituent in multiple biomedical processes.
Yahui Han   +3 more
wiley   +1 more source

Band Formation during Gaseous Diffusion in Aerogels

open access: yes, 1997
We study experimentally how gaseous HCl and NH_3 diffuse from opposite sides of and react in silica aerogel rods with porosity of 92 % and average pore size of about 50 nm.
Alex Hansen   +19 more
core   +1 more source

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