Experimental Study Of The Electromagnetic Drive Of The Ionic Liquids

Ionic liquid is one kind of burgeoning green material solely composed of ions. It is wellelectric and transparence, and have neglectable volatility, wide temperature range of liquid state,so it is a kind of good material in Microfluidics and Photoelectronics, and so on. In recent years,Room Temperature Ionic Liquids apply vigorously in the field of energy equipment,optoelectronics, microfluidic optical devices and so on. The driver of the ionic liquid is a newtechnology in the microfluidic optical applications. Here we use the ampere force to drive theionic liquid, there is not any mechanical moving device and its drive is bidirectional. The drivingspeed of the electromagnetic field on the ion liquid is measured by the designed experiment andcompared with the theoretical values.This paper starts with basic properties and applications of ionic liquids. Physicochemicalcharacteristics such as specific density, melting point, viscosity, conductivity, refractive index,andlight transmissivity are discussed. The known way to drive liquid are surface tension driven,the steam-driven, light pressure driven, magnetic field driven and so on. Here we propose amethod using electric and magnetic fields which are perpendicular to each other to drive ionicliquids. From the aspect of micro and macro, we calculated and analyzed the pressure differenceand flow rate of ionic liquids under different conditions. We analyzed the relationship betweenpressure difference and width of channel under different conditions, the relationship betweendriving rate and width and height of the channel. The results show that this kind of drivingmethod could generate high pressure difference and flow rate under a low voltage. Afteranalyzing the formula, we get the best aspect ratio of the flow channel to drive ionic liquidsfastest.On this basis, we designed a back-slot to measure the driving rate of ionic liquids driven bythe electromagnetic field and compared with the theoretical value. The results show that thisdriving method to drive the ionic liquid by the following features:(1) Have a low driving voltage;(2) Liquid flow rate is linear with the voltage;(3) Frictional resistance have a great influence onthe driving speed;(4) Redox reactions and thermal effects will make driving speed significantlyfaster. At last, we analyze the negative impact of the driving method, and give the potentialapplications of the driving method.