Department of Chemical and Biomolecular Engineering, University of Illinois, Urbana, Illinois 61801, USA.
J Chem Phys. 2012 Feb 7;136(5):054901. doi: 10.1063/1.3679169.
Experimental and theoretical results have established that the range of the attraction plays a critical role in determining whether a particle system exhibits a stable liquid phase. Changes to the range of the repulsions can similarly affect the existence of a stable liquid phase; however, these effects have not been clearly elucidated. We demonstrate that an increase in the range of repulsions can either enhance or decrease the stability of the liquid phase, depending on the form of the interaction potential. For either case, the critical variable that controls the stability of the liquid phase is the ratio of the representative energies of the liquid and solid phases.
实验和理论结果已经证实，吸引力的范围在确定粒子系统是否表现出稳定的液相方面起着关键作用。斥力范围的变化同样会影响稳定液相的存在;然而，这些影响还没有被清楚地阐明。我们证明，斥力范围的增加可以增强或降低液相的稳定性，这取决于相互作用势能的形式。对于这两种情况，控制液相稳定性的关键变量是液相和固相的代表性能量的比值。
