| Autor: |
Müller M; Institute for Theoretical Physics, Georg-August University, 37077 Göttingen, Germany., Tang J; State Key Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China. |
| Jazyk: |
angličtina |
| Zdroj: |
Physical review letters [Phys Rev Lett] 2015 Nov 27; Vol. 115 (22), pp. 228301. Date of Electronic Publication: 2015 Nov 23. |
| DOI: |
10.1103/PhysRevLett.115.228301 |
| Abstrakt: |
Using simulation and numerical self-consistent field theory of an unentangled diblock copolymer melt, we study the interplay between relaxation of molecular conformations from a highly stretched, nonequilibrium state and structure formation of the local, conserved density during self-assembly from a disordered state. We observe that the planar elongation of molecular conformations in the initial, disordered state results in an alignment of lamella normals perpendicular to the stretch direction during the subsequent self-assembly. Although thermodynamically the parallel orientation is favored, the alignment of the lamella normal perpendicular to the stretch direction is characterized by the larger growth rate of composition fluctuations during the spinodal ordering process. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
|
