Budinski-Petković Lj, Vrhovac S B, Loncarević I
Faculty of Engineering, Trg D. Obradovića 6, 21000 Novi Sad, Serbia.
Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Dec;78(6 Pt 1):061603. doi: 10.1103/PhysRevE.78.061603. Epub 2008 Dec 11.
We study random sequential adsorption of polydisperse mixtures of extended objects both on a triangular and on a square lattice. The depositing objects are formed by self-avoiding random walks on two-dimensional lattices. Numerical simulations were performed to determine the influence of the number of mixture components and length of the shapes making the mixture on the kinetics of the deposition process. We find that the late stage deposition kinetics follows an exponential law theta(t) approximately theta_{jam}-Aexp(-tsigma) not only for the whole mixture, but also for the individual components. We discuss in detail how the quantities such as jamming coverage theta_{jam} and the relaxation time sigma depend on the mixture composition. Our results suggest that the order of symmetry axis of the shape may exert a decisive influence on adsorption kinetics of each mixture component.
我们研究了在三角形和正方形晶格上延伸物体的多分散混合物的随机顺序吸附。沉积物体由二维晶格上的自回避随机游走形成。进行了数值模拟，以确定混合物组分数量和构成混合物的形状长度对沉积过程动力学的影响。我们发现，不仅对于整个混合物，而且对于各个组分，后期沉积动力学都遵循指数定律(\theta(t)\approx\theta_{jam}-A\exp(-t\sigma))。我们详细讨论了诸如堵塞覆盖率(\theta_{jam})和弛豫时间(\sigma)等量如何依赖于混合物组成。我们的结果表明，形状对称轴的顺序可能对每个混合物组分的吸附动力学产生决定性影响。
