We proposed an innovative method to achieve dynamic control of particle separation by employing viscoelastic fluids in deterministic lateral displacement (DLD) arrays. The effects of shear-thinning and elasticity of working fluids on the critical separation size in DLD arrays are investigated. It is observed that each effect can lead to the variation of the critical separation size by approximately 40%. Since the elasticity strength of the fluid is related to the shear rate, the dynamic control can for the first time be easily realized through tuning the flow rate in microchannels.
Original Publication Citation
Li, Y., Zhang, H., Li, Y., Li, X., Wu, J., Qian, S., & Li, F. (2018). Dynamic control of particle separation in deterministic lateral displacement separator with viscoelastic fluids. Scientific Reports, 8(3618), 1-9. doi:10.1038/s41598-018-21827-7
Li, Yuke; Zhang, Hongna; Li, Yongyao; Li, Xiaobin; Wu, Jian; Qian, Shizhi; and Li, Fengchen, "Dynamic Control of Particle Separation in Deterministic Lateral Displacement Separator with Viscoelastic Fluids" (2018). Mechanical & Aerospace Engineering Faculty Publications. 55.