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arXiv · 1106.1610

Fluctuations in Symmetric Diblock Copolymers: Testing A Recent Theory

Jian Qin·David C. Morse
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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.

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Jian Qin, David C. Morse. 2011-06-08. Fluctuations in Symmetric Diblock Copolymers: Testing A Recent Theory. https://arxiv.org/abs/1106.1610

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