摘要
指出并论证了文献[7]得出的"线张力通过液滴在三相接触线处的形状变化对接触角发生作用,是造成接触角测量值不确定性的一个重要原因"的结论是错误的.对于文献[7]所选取的两组典型参数下液滴与固体表面的平衡接触状态(即接触角θ和三相接触线曲率半径ρ)及其稳定性问题纠正推导错误后,得出系统各有3个平衡态,其中,2个稳定,1个不稳定,系统究竟处于哪一个稳定平衡态,由系统的初始条件决定,从而进一步验证了线张力并不导致接触角测量值的不确定性.
It is proved wrong that the deformation of droplet near three-phase contact line caused by the line tension may affect the accuracy of measuring contact angle, proposed in Ref. [ 7 ]. For the equilibrium contact states （ i. e. contaet angle θ and curvature radius ρ of three-phase contact line ） and their stability with two typical parameters taken by Ref. [ 7 ]. correct treatment gives three equilibrium contact states, two stable and the other unstable. Which stable equilibrium state the system will stay in depends upon the initial conditions. Thus the line tension con not induce any uncertainty of contact angle.
出处
《应用基础与工程科学学报》
EI
CSCD
2009年第4期622-627,共6页
Journal of Basic Science and Engineering
基金
国家自然科学基金(1047212810772189)
中国科学院知识创新工程领域前沿项目资助
关键词
接触角
线张力
表面张力
广义杨氏方程
contact angle
line tension
surface tension
generalized Young equation
