Effect of nanoparticle surfactants on droplet formation in a flow-focusing microchannel

2021 ◽  
Vol 33 (11) ◽  
pp. 112008
Author(s):  
Jie Qi ◽  
Zheng Liang Yu ◽  
Guo Peng Liao ◽  
Zheng Yuan Luo ◽  
Bo Feng Bai
Keyword(s):  
Droplet Formation ◽  
Flow Focusing

Modeling of Newtonian droplet formation in power-law non-Newtonian fluids in a flow-focusing device

2020 ◽  
Vol 56 (9) ◽  
pp. 2711-2723
Author(s):  
Qi Chen ◽  
Jingkun Li ◽  
Yu Song ◽  
David M Christopher ◽  
Xuefang Li
Keyword(s):  
Power Law ◽  
Droplet Formation ◽  
Newtonian Fluids ◽  
Flow Focusing

Modeling droplet formation in microfluidic flow-focusing devices using the two-phases level set method

2020 ◽  
Author(s):  
D. Hernández-Cid ◽  
V.H. Pérez-González ◽  
R.C. Gallo-Villanueva ◽  
J. González-Valdez ◽  
M.A. Mata-Gómez
Keyword(s):  
Level Set Method ◽  
Level Set ◽  
Droplet Formation ◽  
Flow Focusing ◽  
Microfluidic Flow ◽  
Two Phases

Understanding Fundamental Physics of Aqueous Droplet Generation Mechanisms in the Aqueous Environment

2017 ◽  
Author(s):  
Mohammad Mastiani ◽  
Seokju Seo ◽  
Sofia Melgar Jimenez ◽  
Nick Petrozzi ◽  
Myeongsub (Mike) Kim
Keyword(s):  
Droplet Formation ◽  
Phase System ◽  
Aqueous Environment ◽  
Flow Focusing ◽  
Two Phase ◽  
Droplet Sizes ◽  
Generation Mechanisms ◽  
Hydrodynamic Behaviors ◽  
Aqueous Droplet ◽  
Droplet Generators

Recent advent of Aqueous-Two-Phase-System (ATPS), more biologically friendly compared to conventional oil-water systems, has shown great potential to rapidly generate aqueous droplets without tedious post-processing. However, understanding of underlying physics of droplet formation in ATPS is still in its infancy. In this paper, we investigate hydrodynamic behaviors and mechanisms of all-aqueous droplet formation in two flow-focusing droplet generators. Two incompatible polymers namely polyethylene glycol (PEG) and dextran (DEX) are mixed in water to make ATPS. The influence of inlet pressures and flow-focusing configurations on droplet sizes, and thread breakup length is studied. Flow regime mapping for two different configurations of droplet generators possessing junction angles of 30° and 90° is also obtained. The results show that droplet size is very susceptible to the junction angle while inlet pressures of the PEG and DEX flows readily control four main flow regimes including back flow, dripping, jetting and stratified.

scholarly journals Mode Transition of Droplet Formation in a Semi-3D Flow-Focusing Microfluidic Droplet System

Micromachines ◽  
2018 ◽  
Vol 9 (4) ◽  
pp. 139 ◽  
Author(s):  
Yan Wu ◽  
Xiang Qian ◽  
Min Zhang ◽  
Ying Dong ◽  
Shuqing Sun ◽  
...  
Keyword(s):  
Droplet Formation ◽  
Mode Transition ◽  
Flow Focusing ◽  
3D Flow

Breakup dynamics for droplet formation in a flow-focusing device: Rupture position of viscoelastic thread from matrix

2016 ◽  
Vol 153 ◽  
pp. 255-269 ◽  
Author(s):  
Wei Du ◽  
Taotao Fu ◽  
Qindan Zhang ◽  
Chunying Zhu ◽  
Youguang Ma ◽  
...  
Keyword(s):  
Droplet Formation ◽  
Flow Focusing

scholarly journals Thermally controlled droplet formation in flow focusing geometry: formation regimes and effect of nanoparticle suspension

2008 ◽  
Vol 41 (16) ◽  
pp. 165501 ◽  
Author(s):  
Say-Hwa Tan ◽  
S M Sohel Murshed ◽  
Nam-Trung Nguyen ◽  
Teck Neng Wong ◽  
Levent Yobas
Keyword(s):  
Droplet Formation ◽  
Flow Focusing ◽  
Nanoparticle Suspension

Ferrofluid droplet formation and breakup dynamics in a microfluidic flow-focusing device

Soft Matter ◽  
2013 ◽  
Vol 9 (41) ◽  
pp. 9792 ◽  
Author(s):  
Yining Wu ◽  
Taotao Fu ◽  
Youguang Ma ◽  
Huai Z. Li
Keyword(s):  
Droplet Formation ◽  
Flow Focusing ◽  
Microfluidic Flow
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