Chen Jeff Z Y
Department of Physics and Astronomy, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1.
Phys Rev Lett. 2007 Feb 23;98(8):088302. doi: 10.1103/PhysRevLett.98.088302. Epub 2007 Feb 22.
Monte Carlo simulations are presented for the structural transition of a self-avoiding polymer confined in an elastic soft tube, within the Helfrich energy model for the description of a fluctuating surface. Based on the simulation data of the maximum extension of the confined polymer in the tube and of the tube radius, a swollen-to-globular transition is identified where the confined polymer undergoes an abrupt transition from a shape elongated along the tube axis to a globule that is of much smaller dimensions than that of an unperturbed polymer. An extended regime in the parameter space has been explored where various scaling properties can be viewed.
本文基于描述波动表面的赫尔弗里希能量模型，给出了关于限制在弹性软管中的自回避聚合物结构转变的蒙特卡罗模拟。基于管中受限聚合物的最大伸长量和管半径的模拟数据，确定了从肿胀到球状的转变，在此转变过程中，受限聚合物经历了从沿管轴伸长的形状突然转变为尺寸比未受扰聚合物小得多的小球状的过程。研究了参数空间中的一个扩展区域，在该区域中可以观察到各种标度性质。
