Noncontact measurement of liquid-surface properties with knife-edge electric field tweezers technique
Noncontact measurement of liquid-surface properties with knife-edge electric field tweezers technique
复制标题
刀口电场镊技术非接触测量液体表面特性
DOI：
10.1103/physreve.87.063009
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发表时间：
2013
影响因子：
2.4
通讯作者：
下河 有司 酒井 啓司
中科院分区：
文献类型：
--
作者：
Takahiro Omi;Yosihiko Ogata;Yoshito Hirata;& Kazuyuki Aihara;下河 有司 酒井 啓司
我们开发了一种以非接触方式同时测量液体表面张力和粘度的技术。在该方法中，刀口电极产生的局部介电力引起液体表面的小线性变形。表面张力和粘度分别从诱导弯月面的形状和表面的动态响应获得。将获得的表面张力与通过Wilhelmy平板法测量的值进行比较来检查。我们还测量了各种标准粘度样品的表面变形时间常数，并获得了时间常数与粘度之间的关系。该系统所展示的优势是能够唯一确定表面张力和粘度。
We have developed a technique for the simultaneous measurement of the surface tension and the viscosity of a liquid in a noncontact manner. In this method, a small linear deformation of the liquid surface is induced by a local dielectric force that is brought about by a knife-edge electrode. The surface tension and the viscosity are obtained from the shape of the induced meniscus and from the dynamic response of the surface, respectively. The surface tension obtained was examined in comparison with the values measured by the Wilhelmy plate method. We also measured time constants of the surface deformation for a variety of standard viscosity samples and obtained the relation between the time constant and the viscosity. The demonstrated advantage of the system is the ability to uniquely determine the surface tension and the viscosity.