Fluctuations in Symmetric Diblock Copolymers: Testing A Recent Theory
Soft Condensed Matter
2011-06-09 v1
Abstract
Composition fluctuations in disordered melts of symmetric diblock copolymers are studied by Monte Carlo simulation over a range of chain lengths and interaction strengths. Results are used to test three theories: (1) the random phase approximation (RPA), (2) the Fredrickson-Helfand (FH) theory, which was designed to describe large fluctuations near an order-disorder transition (ODT), and (3) a more recent renormalized one-loop (ROL) theory, which reduces to FH theory near the ODT, but which is found to be accurate over a much wider range of parameters.
Cite
@article{arxiv.1106.1610,
title = {Fluctuations in Symmetric Diblock Copolymers: Testing A Recent Theory},
author = {Jian Qin and David C. Morse},
journal= {arXiv preprint arXiv:1106.1610},
year = {2011}
}
Comments
10 pages, 4 figures