Results 21 to 30 of about 756,449 (301)

Direct measurement of molecular mobility and crystallisation of amorphous pharmaceuticals using terahertz spectroscopy. [PDF]

open access: yes, 2016
Despite much effort in the area, no comprehensive understanding of the formation and behaviour of amorphous solids has yet been achieved. This severely limits the industrial application of such materials, including drug delivery where, in principle ...

core   +2 more sources

Influence of grinding and pressing of the powder 50.0 wt% Fe, 47.0 wt% BaTiO3 and 3.0 wt% TiO2 on morphology, microstructure and magnetic properties [PDF]

open access: yesScience of Sintering
Mixing the powders Fe (50.0 wt%), BaTiO3 (47.0 wt%) and TiO2 (3.0wt%) provides a mixture consisting of a matrix of smaller particles BaTiO3 in which larger particles Fe and TiO2 were embedded.
Kosić Olivera   +4 more
doaj   +1 more source

Processes at lithium-hydride/deuteride surfaces upon low energy impact of H/D

open access: yesFrontiers in Physics, 2023
Sputtering, reflection, and retention processes at amorphous and crystalline lithium hydride surfaces due to impact of low energy (1–100 eV) hydrogen and deuterium atoms over the range of 0o −85o angle of incidence at 300 K surface temperature were ...
P.S. Krstic   +7 more
doaj   +1 more source

Photocatalytic Crystalline and Amorphous TiO2 Nanotubes Prepared by Electrospinning and Atomic Layer Deposition

open access: yesMolecules, 2021
In this work core/shell composite polymer/TiO2 nanofibers and from those TiO2 nanotubes were prepared. First, poly(vinyl alcohol) (PVA) and poly(vinylpyrrolidone) (PVP) fibers were synthetized by electrospinning.
Orsolya Kéri   +8 more
doaj   +1 more source

Kinetically Controlled Two-Step Amorphization and Amorphous-Amorphous Transition in Ice

open access: yesPhysical Review Letters, 2017
We report the results of in situ structural characterization of the amorphization of crystalline ice Ih under compression and the relaxation of high-density amorphous (HDA) ice under decompression at temperatures between 96 and 160 K by synchrotron x-ray diffraction.
Lin C.   +6 more
openaire   +3 more sources

Direct observation of irradiation-induced nanocavity shrinkage in Si [PDF]

open access: yes, 2015
Nanocavities in Si substrates, formed by conventional H implantation and thermal annealing, are shown to evolve in size during subsequent Si irradiation.
Bernas, H.   +6 more
core   +1 more source

Theory of amorphous ices

open access: yes, 2014
We derive a phase diagram for amorphous solids and liquid supercooled water and explain why the amorphous solids of water exist in several different forms.
Chandler, David, Limmer, David T
core   +1 more source

Amorphous interface layer in thin graphite films grown on the carbon face of SiC [PDF]

open access: yes, 2011
Cross-sectional transmission electron microscopy (TEM) is used to characterize an amorphous layer observed at the interface in graphite and graphene films grown via thermal decomposition of C-face 4H-SiC.
Bolen, M. L.   +3 more
core   +3 more sources

Topological Amorphous Metals [PDF]

open access: yesPhysical Review Letters, 2019
We study amorphous systems with completely random sites and find that, through constructing and exploring a concrete model Hamiltonian, such a system can host an exotic phase of topological amorphous metal in three dimensions. In contrast to the traditional Weyl semimetals, topological amorphous metals break translational symmetry, and thus cannot be ...
Yang, Yan-Bin   +4 more
openaire   +3 more sources

Influence of grinding, pressing and sintering of the powder 50.0 wt% Fe, 47.0 wt% BaTiO3 and 3.0 wt% TiO2 on morphology, microstructure, magnetic and electric properties [PDF]

open access: yesScience of Sintering
A mixture of 50.0 wt% Fe, 47.0 wt% BaTiO3, and 3.0 wt% TiO2 powders is milled and then pressed and sintered. Samples sintered from ground powders have a structure consisting of plates.
Luković Milentije   +6 more
doaj   +1 more source

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