Temperature controlled tensiometry using droplet microfluidics

Doojin Lee, Cifeng Fang, Aniket S. Ravan, Gerald G. Fuller, Amy Q. Shen

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


We develop a temperature controllable microfluidic device for the accurate measurement of temperature dependent interfacial tensions between two immiscible liquids. A localized temperature control system is integrated with the microfluidic platform to maintain an accurate temperature inside the device. The temperature uniformity and sensitivity are verified by both simulation and experimental results. Temperature dependent interfacial tensions are measured dynamically and rapidly, relying on quantitative analysis of the deformation and retraction dynamics of droplets under extensional flow. Our microfluidic tensiometry offers the capability of measuring temperature dependent interfacial tensions with precise and systematic temperature control in the range of room temperature to 70 °C, which is valuable for studying transient interfacial dynamics, interfacial reactions, and the surfactant adsorption process.

Original languageEnglish (US)
Pages (from-to)717-726
Number of pages10
JournalLab on a Chip
Issue number4
StatePublished - Feb 21 2017

ASJC Scopus subject areas

  • Bioengineering
  • Biochemistry
  • Chemistry(all)
  • Biomedical Engineering


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