Relaxation Modes and Rates of a Single Polymer Chain in a Periodic Array of Obstacles
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概要
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The relaxation modes and rates of a single polymer chain in the two-dimensional space with periodically placed obstacles are studied by Monte Carlo simulations. The bond fluctuation model is used as a model of a polymer chain. The excluded volume interactions between segments are taken into account. Each segment of the polymer chain occupies a square of width 2a, where a is the lattice constant of the square lattice used in the bond fluctuation model. The obstacles are squares of width 8a and form a square lattice with the lattice constant 16a. From the lattice model of reptation, it is expected that a polymer chain in the periodic array of obstacles shows the reptation behavior. The behavior of the pth slowest relaxation rate of a polymer chain of N segments is found to agree with the prediction λ_p ∝ P^2/N^3. The behaviors of the diffusion constant of the center of mass and the radius of gyration are also consistent with the relation D_G/λ_<p=1> ∝ R^2_g, which is expected from the reptation theory.
- 理論物理学刊行会の論文
- 2000-04-28
著者
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Hagita K
Keio Univ. Yokohama
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Hagita Katsumi
Department Of Physics Faculty Of Science And Technology Keio University
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Hagita Katsumi
Department Of Physics Faculty Of Science And Technology Keio University:(present Address)mitsubishi
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Takano Hiroshi
Department Of Cardiovascular Surgery Osaka Police Hospital
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Takano Hiroshi
Department Of Applied Physics Osaka University
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TAKANO Hiroshi
Department of Physics, Faculty of Science and Technology, Keio University
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TAKANO Hiroshi
Department of Physics, Osaka Unviersity
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TAKANO Hiroshi
Department of Physics, Kyusu University
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