Danwanichakul Panu, Glandt Eduardo D
Department of Chemical Engineering, Faculty of Engineering, Thammasat University, Rangsit Campus, Klong-Luang, Pathumthani 12120, Thailand.
J Colloid Interface Sci. 2005 Mar 1;283(1):41-8. doi: 10.1016/j.jcis.2004.08.163.
The strength of attractive interaction among particles on a surface, which was studied in our previous work, leads to different degrees of clustering and ordering. A growing structure percolates when all clusters connect and become one and finally the structure is jammed when there is no space large enough to accommodate one more particle. The lowest jamming limit reported is for structures from the random sequential adsorption. We studied here, by means of Monte Carlo simulation, structures built through sequential deposition of particles, into which surface diffusion and various degrees of attractive forces are incorporated and reported jamming limits along with the percolation thresholds. The higher the strength of attractive interactions, the larger the percolation densities and jamming limits are. These results were shown in a diagram as a function of temperature (or equivalently the strength of attractive interaction), ranging from very low temperature to very high temperature (RSA limit).
我们之前的工作研究了表面粒子间吸引相互作用的强度,这种强度会导致不同程度的聚集和有序化。当所有团簇连接成一个整体时,生长的结构会发生渗流,而当没有足够大的空间容纳更多粒子时,结构最终会堵塞。报道的最低堵塞极限是针对随机顺序吸附形成的结构。我们在此通过蒙特卡罗模拟研究了通过粒子顺序沉积构建的结构,其中纳入了表面扩散和不同程度的吸引力,并报告了堵塞极限以及渗流阈值。吸引相互作用的强度越高,渗流密度和堵塞极限就越大。这些结果在一个图表中显示为温度(或等效地为吸引相互作用的强度)的函数,范围从非常低的温度到非常高的温度(随机顺序吸附极限)。