نتایج جستجو برای: microphase separation
تعداد نتایج: 123413 فیلتر نتایج به سال:
This modified (two-sided) Mullins-Sekerka model is a nonlocal evolution model for closed hypersurfaces, which appears as a singular limit of a modified Cahn-Hilliard equation describing microphase separation of diblock copolymer. Under this evolution the propagating interfaces maintain the enclosed volumes of the two phases. We will show by means of an example that this model does not preserve ...
In a recent experiment by Chung et al. [Nano Lett. 5, 1878 (2005)] and simulation by Stratford et al. [Science 309, 2198 (2005)] on immiscible blends containing nanoscale particles, it was shown that the phase separation of the two polymers can be prevented as a result of the aggregation of the nanoparticles at the interfaces between the two polymers. Motivated by these studies, we performed la...
A crowd of nonequilibrium entities can show phase transition behaviors that are prohibited in conventional equilibrium setups. An interesting question is whether similar activity-driven transitions also occur pure quantum systems. Here we investigate a classical anisotropic lattice gas model undergoes motility-induced separation and extend the to regime. The resulting many-body induced by non-H...
A facile means for obtaining submicrometer carbon fibers with a nanoporous structure is presented. A mixture of polyacrylonitrile (PAN) and a copolymer of acrylonitrile and methyl methacrylate (poly(AN-co-MMA)) in dimethylformamide was electrospun into submicrometer fibers with a microphase-separated structure. During the followed oxidation process, the copolymer domains were pyrolyzed, resulti...
The genome is packed into the cell nucleus in form of chromatin. Biochemical approaches have revealed that chromatin within domains, which group larger and so forth. Such hierarchical packing equally visible super-resolution microscopy images large-scale organization. While previous work has suggested partitioned distinct domains via microphase separation, it unclear how these organize this pac...
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