Dynamic Pattern Formation in a Vesicle-Generating Microfluidic Device
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.
Additional Information© 2001 The American Physical Society Received 9 January 2001 We thank R. Goldstein for helpful discussions. This work was partially supported by Research Corporation and the NSF.
Published - THOprl01.pdf