A microfluidic device for investigating crystal nucleation kinetics
A microfluidic device for investigating crystal nucleation kinetics
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DOI：
10.1016/j.jcrysgro.2006.12.044
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发表时间：
2007-05-15
影响因子：
1.8
通讯作者：
Joanicot, Mathieu
中科院分区：
文献类型：
--
作者：
Laval, Philippe;Salmon, Jean-Baptiste;Joanicot, Mathieu
我们开发了一种使用微流控工具的原始设置，使人们能够连续生产单分散微反应器(大约100 NL)，并在它们流入微设备时控制它们的温度。利用特定的微通道几何结构，我们能够对含有KNO_3溶液的液滴进行大温度淬火(10 S，温度高达50摄氏度)，然后在高过饱和度下跟踪成核动力学。通过测量液滴中晶体存在的概率作为时间的函数，我们估计了不同过饱和度下的成核率，并将我们的结果与经典成核理论进行了对比。(C)2007 Elsevier B.V.保留所有权利。
We have developed an original setup using microfluidic tools allowing one to produce continuously monodisperse microreactors (approximate to 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 KNO3 solution (up to 50 degrees 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. (C) 2007 Elsevier B.V. All rights reserved.