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SUMMARY:Contr. Talk 3 - Flow-assisted droplet assembly in a 3D microfluidi
 c channel
DTSTART;VALUE=DATE-TIME:20181210T154000Z
DTEND;VALUE=DATE-TIME:20181210T160000Z
DTSTAMP;VALUE=DATE-TIME:20260523T113353Z
UID:indico-contribution-501@lindico453.srv.lu.se
DESCRIPTION:Speakers: Zhouyang Ge ()\nSelf-assembly of soft matter\, such 
 as droplets or colloids\, has become a promising scheme to engineer novel 
 materials\, model living matter\, and explore non-equilibrium statistical 
 mechanics. In this talk\, we present detailed numerical simulations of few
  non-Brownian droplets in various flow conditions\, specifically\, focusin
 g on their self-assembly within a short distance in a three-dimensional (3
 D) microfluidic channel\, cf. [Shen et al.\, Adv. Sci.\, 2016\, 3(6):16000
 12]. Contrary to quasi two-dimensional (q2D) systems\, where dipolar inter
 action is the key mechanism for droplet rearrangement\, droplets in 3D con
 finement produce much less disturbance to the underlying flow\, thus exper
 iencing weaker dipolar interactions. Using confined simple shear and Poise
 uille flows as reference flows\, we show that the droplet dynamics is most
 ly affected by the shear-induced cross-stream migration\, which favors cha
 in structures if the droplets are under an attractive depletion force. For
  more compact clusters\, such as three droplets in a triangular shape\, ou
 r results suggest that a non-uniform cross-sectional inflow profile is fur
 ther required. Overall\, the accelerated self-assembly of a small-size dro
 plet cluster results from the combined effects of strong depletion forces\
 , shear alignments\, and fine-tuned inflow conditions. The deterministic n
 ature of the flow-assisted self-assembly implies large throughputs\, thoug
 h calibration of all effects is likely difficult at the same time.\n\nhttp
 s://lindico453.srv.lu.se/event/67/contributions/501/
LOCATION:Elite Hotel Ideon Tera
URL:https://lindico453.srv.lu.se/event/67/contributions/501/
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