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Influence of flow rate on the droplet generation process in a microfluidic chip

  • Florian Lapierre
  • , Nan Wu
  • , Yonggang Zhu*
  • *Corresponding author for this work
  • CSIRO

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Droplet generation in microfluidics has attracted a great deal of attention due to the potential applications in many areas of science and technology. The understanding of the generation mechanism is still unsatisfactory and proposed models lack generality for different microchips with flow conditions and channel geometries. In this paper, we present new results of droplet generation in a PMMA microchip using flow-focusing technique. The current data are compared with existing published data obtained with similar generation microchip method. The dependence of the droplet size/slug length on the capillary number and ratio of the continuous phase and dispersed phase flow rates is investigated. A model has been proposed which explains well the data from several similar studies.

Original languageEnglish
Title of host publicationSmart Nano-Micro Materials and Devices
DOIs
StatePublished - 2011
Externally publishedYes
EventSmart Nano-Micro Materials and Devices - Hawthorn, VIC, Australia
Duration: 5 Dec 20117 Dec 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8204
ISSN (Print)0277-786X

Conference

ConferenceSmart Nano-Micro Materials and Devices
Country/TerritoryAustralia
CityHawthorn, VIC
Period5/12/117/12/11

Keywords

  • Capillary number
  • Droplet generation
  • Flow focusing
  • Microfluidics
  • Water in oil emulsion

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