نتایج جستجو برای: spherulite
تعداد نتایج: 167 فیلتر نتایج به سال:
The structure and biological function of the DNA double helix are based on interactions recognizing sequence complementarity between two single strands of DNA. A single DNA strand can also recognize the double helix sequence by binding in its groove and forming a triplex. We now find that sequence recognition occurs between intact DNA duplexes without any single-stranded elements as well. We ha...
Surface morphology and chemistry of polymers used as biomaterials, such as tissue engineering scaffolds, have a strong influence on the adhesion and behavior of human mesenchymal stem cells. Here we studied semicrystalline poly(ε-caprolactone) (PCL) substrate scaffolds, which exhibited a variation of surface morphologies and roughness originating from different spherulitic superstructures. Subs...
Spherulitic growth produces radial arrays of polycrystalline aggregates in a wide variety of materials, ranging from pure elements to macromolecules. Despite more than a century of study, a generally accepted theory of spherulitic growth is lacking; indeed, the existence of a common mechanism is debated. One commonly seen subset of this growth morphology| banded spherulites | exhibits bands con...
Isothermal-crystallization kinetics and spherulite growth of aliphatic polyketone/polyamide-6 blends
Structural aspects of crystal nucleation in undercooled liquids are explored using a nonlinear hydrodynamic theory of crystallization proposed recently [G. I. Tóth et al., J. Phys.: Condens. Matter 26, 055001 (2014)JCOMEL0953-898410.1088/0953-8984/26/5/055001], which is based on combining fluctuating hydrodynamics with the phase-field crystal theory. We show that in this hydrodynamic approach n...
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