2006/10/31 by Jacques Leng, Leng, Jacques, Mathieu Joanicot +3
Engineering · #Innovative Microfluidic and Catalytic Techniques Innovation #Microfluidic and Capillary Electrophoresis Applications #Electrowetting and Microfluidic Technologies
paper · doi:10.48550/arxiv.cond-mat/0610876
We investigate the behaviour of a binary surfactant solution (AOT/water) as it is progressively concentrated in microfluidic evaporators. We observe in time a succession of phase transitions from a dilute solution up to a dense state, which eventually grows and invades the microchannels. Analyzing these observations, we show that, with a few experiments and a limited amount of material, our microdevices permit a semi-quantitative screening of the equilibrium phase diagram as well as a few kinetic observations.