Thorsen T, Roberts R W, Arnold F H, Quake S R
Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA.
Phys Rev Lett. 2001 Apr 30;86(18):4163-6. doi: 10.1103/PhysRevLett.86.4163.
Spatiotemporal pattern formation occurs in a variety of nonequilibrium physical and chemical systems. Here we show that a microfluidic device designed to produce reverse micelles can generate complex, ordered patterns as it is continuously operated far from thermodynamic equilibrium. Flow in a microfluidic system is usually simple-viscous effects dominate and the low Reynolds number leads to laminar flow. Self-assembly of the vesicles into patterns depends on channel geometry and relative fluid pressures, enabling the production of motifs ranging from monodisperse droplets to helices and ribbons.
时空图案形成发生在各种非平衡物理和化学系统中。在这里我们表明，一个设计用于产生反胶束的微流控装置在远离热力学平衡的连续运行过程中能够产生复杂、有序的图案。微流控系统中的流动通常很简单——粘性效应占主导，低雷诺数导致层流。囊泡自组装成图案取决于通道几何形状和相对流体压力，从而能够产生从单分散液滴到螺旋和带状等各种图案。
