Department of Chemistry, Institute of Biological Interfaces, Sogang University, Seoul 121-742, Korea.
J Biomed Nanotechnol. 2013 Jul;9(7):1250-3. doi: 10.1166/jbn.2013.1544.
The electrowetting of water drops on a dielectric fluoropolymer film was studied experimentally. The dependence of the contact angles of the water drops on the applied voltage has been well explained in the low-voltage limit by using the classical Young-Lippmann theory. With this theory, the thicknesses of films coated on glass substrates by using a spin-coater were obtained indirectly by fitting the contact angle data and were confirmed by using X-ray reflectometry. The two sets of results showed a good agreement. In addition, we confirmed that the contact angle saturation at high voltage were consistent with Peykov's model.
我们对水滴滴在电介质氟聚合物薄膜上的电润湿现象进行了实验研究。在低电压极限下，通过使用经典的杨氏-利普森理论，很好地解释了水滴滴的接触角随所施加电压的变化关系。利用该理论，通过拟合接触角数据，间接得到了用旋涂法在玻璃基底上涂覆的薄膜的厚度，并通过 X 射线反射测量法对其进行了验证。两组结果吻合得很好。此外，我们还证实了在高电压下接触角的饱和与 Peykov 模型是一致的。
