Gau H, Herminghaus S, Lenz P, Lipowsky R
H. Gau and S. Herminghaus, Max-Planck-Institute (MPI) of Colloids and Interfaces, Rudower Chaussee 5, D-12489, Berlin-Adlershof, Germany. P. Lenz and R. Lipowsky, MPI of Colloids and Interfaces, Kantstrasse 55, D-14513 Teltow-Seehof, Germany.
Science. 1999 Jan 1;283(5398):46-9. doi: 10.1126/science.283.5398.46.
Liquid microchannels on structured surfaces are built up using a wettability pattern consisting of hydrophilic stripes on a hydrophobic substrate. These channels undergo a shape instability at a certain amount of adsorbed volume, from a homogeneous state with a spatially constant cross section to a state with a single bulge. This instability is quite different from the classical Rayleigh Plateau instability and represents a bifurcation between two different morphologies of constant mean curvature. The bulge state can be used to construct channel networks that could be used as fluid microchips or microreactors.
结构化表面上的液体微通道是利用由疏水性基底上的亲水性条纹组成的润湿性图案构建而成的。这些通道在一定吸附体积下会经历形状不稳定性，从具有空间恒定横截面的均匀状态转变为具有单个凸起的状态。这种不稳定性与经典的瑞利 - 普拉托不稳定性有很大不同，代表了两种具有恒定平均曲率的不同形态之间的分岔。凸起状态可用于构建可作为流体微芯片或微反应器的通道网络。
