A new micro pump for rapid and accurate microscale droplet manipulation using thermo-viscous actuation
نویسندگان
1 - Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran - Aerospace and Energy Conversion Research Center, Najafabad Branch, Islamic Azad University, Najafabad, Iran
2 Department of Mechanical Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran
doi
10.24200/sci.2022.57704.5375چکیده
Current study proposes a novel mechanism for micro scale droplet generation. To this end, a new micro pump consisting of an expansion chamber with two nozzles at its left and right sides, is introduced which is capable of creating a unidirectional flow. In the current study, for the first time, thermo-Viscose expansion method is used to actuate the flow by assuming that the fluid is heated by using a laser beam source leading to expansion and movement of the fluid. Two-phase flow analysis using the VOF method showed that the proposed micro pump can consistently generate droplets with uniform and micro-scale dimensions.
