Sun CQ, Sun Y, Ni YG, Zhang X, Pan JS, Wang XH, Zhou J, Li LT, Zheng WT, Yu SS, Pan LK, and Sun Z, Coulomb Repulsion at the Nanometer-Sized Contact: A Force Driving Superhydrophobicity, Superfluidity, Superlubricity, and Supersolidity. J Chem Phys C, 2009; 113: 20009-20019. http://bbs.sciencenet.cn/forum.php?mod=viewthread&tid=69517&fromuid=73032