摘要
基于点偶极子模型 ,用统计的方法计算电流变体系的自由能 ,考虑体系中粒子的渗透压 ,研究其液 -固相变 .理论研究结果表明 :当外加电场强度大于一临界值Ec 时 ,渗透压变为负值 ,体系发生由液相向固相的转化 .
Based on the point-dipole model,we have calculated the free energy of electrorheological fluid by using statitical method.The phase transition from liquid to solid is investigated by considering the osmotic pressure of particles in the suspension.Our results show that the osmotic pressure become negative when the applied field exceeds a critical value E c and then the liquid experiences a phase transition to a solid phase.
基金
国家自然科学基金资助项目!(198740 2 1)
湖南省教委科研基金资助项目!(98B0 87)
