Influence of thermal history on the structure and properties of silicate glasses [PDF]
, 2006 We studied a set of float glass samples prepared with different fictive temperature by previous annealing around the glass transition temperature. We compared the results to previous measurements on a series of amorphous silica samples, also prepared ...
A. Faivre +24 more
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Nanoporous silica-based protocells at multiple scales for designs of life and nanomedicine. [PDF]
, 2015 Various protocell models have been constructed de novo with the bottom-up approach. Here we describe a silica-based protocell composed of a nanoporous amorphous silica core encapsulated within a lipid bilayer built by self-assembly that provides for ...
Brinker, C Jeffrey +3 more
core +2 more sources
Scientific Reports, 2023 Silica cycling in the world’s oceans is not straightforward to evaluate on a geological time scale. With the rise of radiolarians and sponges from the early Cambrian onward, silica can have two depositional origins, continental weathering, and biogenic ...
H. Corlett +3 more
doaj +1 more source
From Crystalline to Amorphous Germania Bilayer Films at the Atomic Scale: Preparation and Characterization [PDF]
, 2019 A new two-dimensional (2D) germanium dioxide film has been prepared. The film consists of interconnected germania tetrahedral units forming a bilayer structure, weakly coupled to the supporting Pt(111) metal-substrate.
Freund, H. +8 more
core +3 more sources
Ultrathin Amorphous Silica Membrane Enhances Proton Transfer across Solid-to-Solid Interfaces of Stacked Metal Oxide Nanolayers while Blocking Oxygen [PDF]
, 2020 A large jump of proton transfer rates across solid-to-solid interfaces by inserting an ultrathin amorphous silica layer into stacked metal oxide nanolayers is discovered using electrochemical impedance spectroscopy and Fourier-transform infrared ...
Frei, H, Jo, WJ, Katsoukis, G
core +2 more sources
Comment on “First-Order Amorphous-Amorphous Transformation in Silica” [PDF]
Physical Review Letters, 2001 Physical Review ...
openaire +3 more sources
Silica in Protoplanetary Disks
, 2008 Mid-infrared spectra of a few T Tauri stars (TTS) taken with the Infrared Spectrograph (IRS) on board the Spitzer Space Telescope show prominent narrow emission features indicating silica (crystalline silicon dioxide).
A. Li +82 more
core +1 more source
Layer Structured Manganese Oxide Hydroxides
CHIMIA, 1980 Crystallinity and morphology of synthetic 10 Å-manganate (buserite) depend a) on the presence or absence of amorphous colloidal silica and co-precipitating amorphous ferric hydroxide, and b) on the ageing under pressure or normal conditions. Experiments
Rudolf Giovanoli
doaj +1 more source
Effect of silica particle size on macrophage inflammatory responses.
PLoS ONE, 2014 Amorphous silica particles, such as nanoparticles (
Toshimasa Kusaka +5 more
doaj +1 more source
Density hardening plasticity and mechanical aging of silica glass under pressure: A Raman spectroscopic study [PDF]
, 2008 In addition of a flow, plastic deformation of structural glasses (in particular amorphous silica) is characterized by a permanent densification. Raman spectroscopic estimators are shown to give a full account of the plastic behavior of silica under ...
Antoine Perriot +11 more
core +4 more sources