Liu Xinyuan, Jia Li, Ding Yi, Dang Chao, Yin Liaofei, Xu Jinzhu, Zhang Ruiqi
Beijing Key Laboratory of Flow and Heat Transfer of Phase Changing in Micro and Small Scale, School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044, China.
ACS Appl Mater Interfaces. 2024 Oct 3. doi: 10.1021/acsami.4c10469.
Technologies for manipulating droplets have applications in various fields, such as biomedical devices, chemical engineering, water collection, and thermal management. The morphology of magnetically responsive surfaces are modified using magnetic fields for inducing droplet directional rolling and bouncing. Herein, a study on the directional transport of droplets on magnetically responsive surfaces is reported, identifying three movement modes and analyzing the mechanisms influencing the transport behavior. The study explored working fluids with surface tension lower than that of water, achieving the directional transport of 30% ethanol droplets with a maximum transport velocity of 130 mm s. The practical applications of the droplets on a modified surface were analyzed, and methods were developed to accelerate droplet mixing. This study explored efficient operations and automation of complex chemical processes.
操纵液滴的技术在生物医学设备、化学工程、集水和热管理等各个领域都有应用。利用磁场改变磁响应表面的形态，以诱导液滴定向滚动和弹跳。本文报道了一项关于液滴在磁响应表面上定向传输的研究，确定了三种运动模式，并分析了影响传输行为的机制。该研究探索了表面张力低于水的工作流体，实现了30%乙醇液滴的定向传输，最大传输速度为130毫米/秒。分析了液滴在改性表面上的实际应用，并开发了加速液滴混合的方法。本研究探索了复杂化学过程的高效操作和自动化。
