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DY: Dynamik und Statistische Physik

DY 46: Poster

DY 46.83: Poster

Donnerstag, 30. März 2006, 16:00–18:00, P1

ON NUCLEATION-AND-GROWTH STRATEGIES IN MODEL BIOPOLYMER SYSTEMS — •NATALIA KRUSZEWSKA and ADAM GADOMSKI — U.T.A. BYDGOSZCZ, INST. MATHS & PHYS., AL. KALISKIEGO 7, PL-85796 BYDGOSZCZ

We are dealing with nucleation-and-growth strategies based on the self-avoiding random walk (SARW). We investigate some below mentioned dynamic effects by means of a Monte Carlo simulation in a discrete two-dimensional space, using periodic boundary conditions. The dynamics is set up by the well-known HP model.
The effects of interest are the following:
(i) estimation of the optimal number of SARW monomers forming a stable nucleus; (ii) influence of inter- vs intra-chain effects on the formation of the stable nucleus; (iii) role of (optimal) temperature in the formations of nuclei; (iv) observation on how does the excluded-volume effect propagate through both nucleation and growth stages of the process

[1] J. Łuczka et al.: Phys. Rev. E 51, 5762 (1995). The growth stages will be examined while the optimal nuclei formed are at some fixed as well as variable positions. As a consequence, either a network of SARWs or a cluster-cluster assemblage will be formed.
The strategies revealed by realization of points (i)-(iv) above, can lead to better understanding of soft-matter aggregations such as biopolymer or colloid

[2] A. Gadomski et al.: Chem. Phys. 310, 153 (2005).