Conformation and dynamics of a self‐avoiding sheet: Bond‐fluctuation computer simulation

The conformation and dynamics of a self‐avoiding sheet are analyzed by the bond‐fluctuating Monte Carlo method. The mean‐square displacement of the center of mass of the sheet and that of its center node (R ) show asymptotic diffusive behavior. The segmental dynamics in short and long time regimes can be deduced from the motion of the center node described by the power lawRₙ² C₁ t2μ + C₂ t2ν with μ ≃ 0.13 and ν ≃ ½, whereC1andC2are fitting constants andtis the time. The radius of gyration,Rg, scales with the linear size,Ls, of the sheet asRg≃Nγwith γ ≃ ½ andN=L , and this is consistent with the conformational analysis of open tethered membranes with excluded‐volume constraints.