Cheong Haena, Oh Hyunju, Kim Yongjun, Kim Yunpyo, Soum Veasna, Choi Jae-Hak, Kwon Oh-Sun, Shin Kwanwoo
J Nanosci Nanotechnol. 2018 Oct 1;18(10):7147-7150. doi: 10.1166/jnn.2018.15500.
The effects of an immiscible, lubricating polydimethylsiloxane fluid, referred to as silicone oil, on the static deformation and on the dynamic motion of a water drop on paper induced by electrowetting were investigated. The deformation of a drop on a hydrophobic film of amorphous fluoropolymers top-coated with less hydrophobic silicone oil was much more predictable, reversible and reproducible than on the uncoated surface. In the dynamic tribological experiment for a sliding drop along an inclined surface, a significant decrease in the friction coefficient, with an unexpected dependency of the contact area, was observed. Based on the curve fitting analysis, the shear stress and the net friction force were estimated quantitatively. Because of the tribological effect and the reduced shear friction force of the oil film, the static and the dynamic electrowetting states of the water drop were enhanced.
研究了一种不混溶的润滑聚二甲基硅氧烷流体（称为硅油）对电润湿诱导的水滴在纸张上的静态变形和动态运动的影响。在顶部涂覆疏水性较低的硅油的无定形含氟聚合物疏水膜上，液滴的变形比在未涂覆表面上更具可预测性、可逆性和可重复性。在沿倾斜表面滑动液滴的动态摩擦学实验中，观察到摩擦系数显著降低，且与接触面积存在意外的相关性。基于曲线拟合分析，定量估算了剪切应力和净摩擦力。由于油膜的摩擦学效应和降低的剪切摩擦力，水滴的静态和动态电润湿状态得到了增强。
