Droplets and Bubbles in Microfluidic Devices
- 3 January 2016
- journal article
- Published by Annual Reviews in Annual Review of Fluid Mechanics
- Vol. 48 (1), 285-309
- https://doi.org/10.1146/annurev-fluid-122414-034425
Abstract
Precise, tunable emulsions and foams produced in microfluidic geometries have found wide application in biochemical analysis and materials synthesis and characterization. Superb control of the volume, uniformity, and generation rate of droplets and bubbles arises from unique features of the microscale behavior of fluid interfaces. Fluid interfaces confined within microfluidic channels behave quite differently than their counterparts in unbounded flows. Confinement inhibits capillary instabilities so that breakup occurs by largely quasi-static mechanisms. The three-dimensional flow near confined interfaces in rectangular geometries and feedback effects from resistance changes in the entire microfluidic network play important roles in regulating the interfacial deformation. Timescales for transport of surfactants and particles to interfaces compete with flow timescales at the microscale, providing further opportunity for tuning the interfacial coverage and properties of individual droplets and bubbles.Keywords
This publication has 101 references indexed in Scilit:
- Dynamics of droplet breakup in a T-junctionJournal of Fluid Mechanics, 2013
- Stabilising emulsion‐based colloidal structures with mixed food ingredientsJournal of the Science of Food and Agriculture, 2012
- Selective droplet coalescence using microfluidic systemsLab on a Chip, 2012
- Scale-up and control of droplet production in coupled microfluidic flow-focusing geometriesMicrofluidics and Nanofluidics, 2012
- Synthesis of novel fluorous surfactants for microdroplet stabilisation in fluorous oil streamsJournal of Fluorine Chemistry, 2010
- Capillary threads and viscous droplets in square microchannelsPhysics of Fluids, 2008
- Reactions in Droplets in Microfluidic ChannelsAngewandte Chemie-International Edition, 2006
- The effect of elasticity on drop creation in T-shaped microchannelsJournal of Non-Newtonian Fluid Mechanics, 2006
- Microfluidic bypass for efficient passive regulation of droplet traffic at a junctionApplied Physics Letters, 2006
- Adsorption dynamics of surfactants at the air/water interface: a critical review of mathematical models, data, and mechanismsColloids and Surfaces A: Physicochemical and Engineering Aspects, 1995