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Extracting bulk properties of self-assembling systems from small simulationsThomas E. Ouldridge, Ard A. Louis and Jonathan P. K. DoyeJ. Phys.: Condens. Mattter 22, 104102 (2010)AbstractFor systems that self assemble into finite-sized objects, it is sometimes convenient to compute the thermodynamics for a small system where a single assembly can form. However, we show that in the canonical ensemble the use of small systems can lead to significant finite-size effects due to the suppression of concentration fluctuations. We introduce methods to estimate the bulk-yields from simulations of small systems and to follow the convergence of yields with system size, under the assumptions that the various species behave ideally. We also propose an extension to the umbrella sampling technique that allows the formation of multiple finite-sized objects.The full paper is available from IOP and arXiv.org. |