Results 341 to 350 of about 670,872 (365)

Crystallization of Soft Crystals

Langmuir, 2008
The crystallization of micelles formed by surfactant F127 solvated by 20% in water was investigated in the vicinity of a hydrophilic interface. Upon entering the crystalline phase from low temperature, a large correlation length develops without preferential texture.
Max Wolff, Hartmut Zabel, Andreas Magerl
openaire   +3 more sources

Crystallization mechanisms of acicular crystals

Journal of Crystal Growth, 2008
Abstract In this contribution, we present an experimental investigation of the growth of four different organic molecules produced at industrial scale with a view to understand the crystallization mechanism of acicular or needle-like crystals. For all organic crystals studied in this article, layer-by-layer growth of the lateral faces is very slow ...
Puel, F., Verdurand, E., Taulelle, P., Bebon, C., Colson, D., Klein, J.P., Veesler, S.   +6 more
openaire   +4 more sources

Crystallization of Pharmaceutical Crystals

2015
The aim of this chapter is to provide students as well as industrial and academic research scientists who intend to tackle crystallization of pharmaceutical crystals with theory and practical examples. Crystallization involves two separate processes, nucleation and growth, which are rarely completely unconnected.
Veesler, S., Puel, François
openaire   +3 more sources

Is there a crystal clear definition of a crystal?

Zeitschrift für Kristallographie, 2007
To clearly define the objects one is working with is a prerequisite for sound scientific work. In particular, a comparison of results is impossible without. In this view, one needs a clear-cut definition of what a crystal is supposed to be. Moreover, in view of the large community of people working with them, it is desirable to even have a well ...
Baake, Michael, Frettlöh, Dirk
openaire   +2 more sources

Crystallized vortex crystals

The European Physical Journal D - Atomic, Molecular and Optical Physics, 1998
Numerical simulations of the equations of motion of 300 charged particles confined to a plane with an additional magnetic field orthogonal to the plane reproduce recently observed self-organization of non-neutral plasmas into a small number of interacting vortices. In the presence of damping we observe crystallized vortices, i.e.
Reinhold Blümel, B. Reusch
openaire   +2 more sources

Crystal-to-Crystal Photodimerizattons

Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, 1994
Abstract Most [2+2 photodimerizations proceed heterogeneously, i.e. at a certain conversion phase separation occurs which leads to the destruction of the parent crystal. The crystal fragmentation can be avoided by irradiation in the long wavelength tail of the absorption.
Kathleen Novak, Volker Enkelmann, Kenneth B. Wagener, Gerhard Wegner   +3 more
openaire   +2 more sources

Crystal Design and Crystal Engineering

Angewandte Chemie International Edition, 2003
No abstract.
openaire   +3 more sources

Models of secondary nucleation attributable to crystal‐crystallizer and crystal‐crystal collisions

AIChE Journal, 1974
AbstractThe rate of secondary nucleation of ice, assumed to be proportional to the product of collision frequency and impact energy, has been quantitatively modeled using idealized representations of collisions between crystals and either other crystals or surfaces in the crystallizer.
G. Margolis, T. W. Evans, Adel F. Sarofim   +2 more
openaire   +2 more sources

Crystallization

2014
crystallization
openaire   +3 more sources

Motion of Crystal/Crystal and Crystal/Amorphous Interfaces

MRS Proceedings, 1990
AbstractMotion of ordered twin/matrix interfaces in films of silicon on sapphire occurs during high temperature annealing. This process is shown to be thermally activated and is analogous to grain boundary motion. Motion of amorphous/crystalline interfaces occurs during recrystallization of CoSi2 and NiSi2 from the amorphous phase. In-situ transmission
openaire   +2 more sources