基于[bmim]NTF_2离子液体的MHD驱动

MHD Drive Based on the Ionic Liquid [bmim]NTF_2

针对离子液体在化学、物理领域较少现象,提出了离子液体可作为一种新型的流体材料应用于微流控芯片。离子液体驱动方法是基于磁流体力学(MHD)原理,采用电磁场相互作用所产生的洛伦兹力,直接作用于流体以驱动流体前进的驱动方式。为了能对离子液体的驱动现象进行直观的观测和验证,设计了电磁驱动下离子液体的流速测量实验。实验结果显示,离子液体在0.4 T稳恒磁场中,8 V直流电压下流量为7.8μL/s。对比实验与理论结果,可知电磁场驱动下离子液体的运动规律,以此可促进离子液体在微流控技术和光电子器件等领域的应用。

Ionic liquids are mainly applied in the field of chemistry and rarely applied as physical material. In this paper, ionic liquids are used as a new type of fluid material for microfluidic. We propose a novel method for driving an i- onic liquid based on the principle of magnetic hydrodynamics. In order to visually observe and study the flow phenomenon of ionic liquids, we designed two experiments： the driving force measurement and the ionic liquid flow velocity measurement. Experimental results show that the flow rates are 7.8μl/s at applied direct-current potentials of 8V in a 0.4T magnetic field. The experimental results are compared with theoretical results to show the motion law of ionic liquids in driven magnetic field. Our research promotes the application of ionic liquids in microflnidics and optoelectronics.