Schaeffel David, Yordanov Stoyan, Schmelzeisen Marcus, Yamamoto Tetsuya, Kappl Michael, Schmitz Roman, Dünweg Burkhard, Butt Hans-Jürgen, Koynov Kaloian
Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany.
Phys Rev E Stat Nonlin Soft Matter Phys. 2013 May;87(5):051001. doi: 10.1103/PhysRevE.87.051001. Epub 2013 May 10.
By combining total internal reflection fluorescence cross-correlation spectroscopy with Brownian dynamics simulations, we were able to measure the hydrodynamic boundary condition of water flowing over a smooth solid surface with exceptional accuracy. We analyzed the flow of aqueous electrolytes over glass coated with a layer of poly(dimethylsiloxane) (advancing contact angle Θ = 108°) or perfluorosilane (Θ = 113°). Within an error of better than 10 nm the slip length was indistinguishable from zero on all surfaces.
通过将全内反射荧光互相关光谱与布朗动力学模拟相结合，我们能够以极高的精度测量水流过光滑固体表面时的流体动力学边界条件。我们分析了涂有聚二甲基硅氧烷层（前进接触角Θ = 108°）或全氟硅烷（Θ = 113°）的玻璃上的水性电解质流动情况。在误差优于10纳米的范围内，所有表面上的滑移长度与零无法区分。
