A microfluidic device for investigating crystal nucleation kinetics

Details A microfluidic device for investigating crystal nucleation kinetics A microfluidic device for investigating crystal nucleation kinetics

2006-12-20

arxiv.org/abs/cond-mat/0612526v1

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1016/j.jcrysgro.2006.12.044

We have developed an original setup using microfluidic tools allowing one to produce continuously monodisperse microreactors ($\approx 100$ nL), and to control their temperatures as they flow in the microdevice. With a specific microchannels geometry, we are able to apply large temperature quenches to droplets containing a KNO$_3$ solution (up to 50$^{\circ}$C in 10 s), and then to follow nucleation kinetics at high supersaturations. By measuring the probability of crystal presence in the droplets as a function of time, we estimate the nucleation rate for different supersaturations, and confront our results to the classical nucleation theory.

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