Results 241 to 250 of about 2,171,604 (298)
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Morphological equilibration of a facetted crystal
Physical Review B, 1992We study the morphological equilibration of a finite, facetted crystal by use of phenomenological equations of motion. The relevant atomistic kinetic processes (edge transfer, kink attachment and/or detachment, terrace hopping, and surface diffusion) are introduced progressively with special attention given to a proper treatment of the latter.
, Ozdemir, , Zangwill
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Morphological instabilities of polymer crystals
The European Physical Journal E, 2008We present experimental observations at comparatively low supercooling of morphology transitions from dendritic to faceted structures in polymer crystals growing in thin films of a poly-2-vinylpyridine-block-polyethyleneoxid copolymer. Our results are compared with theoretical concepts describing morphological instabilities of single crystals. Although
Grozev, Nikolay +2 more
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Crystallization and Morphology
1989The crystalline high polymers represent a class of materials which, in the solid state, exhibit a complex hierarchical morphology in which structural ordering occurs over a wide range of dimensional levels. These range from spacings of the order of angstroms between neighbouring chains within a crystal lattice through the tens of nanometres to microns ...
Alun S. Vaughan, David C. Bassett
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Nucleation and Morphology of Chymotrypsinogen Crystals
Nature, 1964IT has been suggested recently1 that the morphology of enzyme crystals grown from solutions at various super-saturations2 may be interpreted in terms of the basic mechanisms of nucleation. Little is known of either the nucleation mechanism or the solid-state properties of enzymes, since most are notoriously unstable even under mild conditions. The work
J A, HAMILTON, J A, KOUTSKY, A G, WALTON
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2000
This chapter focuses on crystal morphology. The overall shape of a crystal—often called its habit, form, or morphology—is a vital parameter in determining the viability of both processes and products. It is usual to distinguish between ‘equilibrium’ and ‘growth’ morphologies. Morphology is determined by two factors: the symmetry of the internal crystal
Roger J. Davey, John Garside
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This chapter focuses on crystal morphology. The overall shape of a crystal—often called its habit, form, or morphology—is a vital parameter in determining the viability of both processes and products. It is usual to distinguish between ‘equilibrium’ and ‘growth’ morphologies. Morphology is determined by two factors: the symmetry of the internal crystal
Roger J. Davey, John Garside
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Morphology of modulated crystals
Physica Status Solidi (a), 1994Continuing three recent papers the basic principles of a theory to explain the occurrence of faces to be indexed with four integers (hklm) occurring on modulated crystals are explained. The theory is rooted in the higher than three-dimensional crystallography of Janner, Janssen, and de Wolff.
P. Bennema +3 more
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On the morphology of polymer crystals
Polymer, 1964Abstract Crystals of isotactic poly-4-methylpentene-1 and of polyoxymethylene have been grown from dilute solution. The X-ray long period has been measured as a function of crystallization temperature for poly-4-methylpentene-1 in xylene and for polyoxymethylene in furfuryl alcohol.
D.C. Bassett, F.R. Dammont, R. Salovey
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