Thermally mediated droplet formation in microchannels

Nam Trung Nguyen, Teck Hui Ting, Yit Fatt Yap, Teck Neng Wong, John Chee Kiong Chai, Wee Liat Ong, Junlong Zhou, Say Hwa Tan, Levent Yobas

Research output: Contribution to journalArticle

78 Citations (Scopus)

Abstract

Precise dispensing of microdroplets is an important process for droplet-based microfluidics. The droplet formation by shear force between two immiscible fluids depends on their flow rates, the viscosities, and the interfacial tension. In this letter, the authors report the use of integrated microheater and temperature sensor for controlling the droplet formation process. The technique exploits the dependency on temperature of viscosities and interfacial tension. Using a relatively low heating temperature ranging from 25 to 70 °C, the droplet diameter can be adjusted to over two times of its original value. The relatively low temperature range makes sure that this concept is applicable for droplets containing biological samples.

Original languageEnglish
Article number084102
JournalApplied Physics Letters
Volume91
Issue number8
DOIs
Publication statusPublished - 20 Aug 2007
Externally publishedYes

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microchannels
interfacial tension
viscosity
temperature sensors
flow velocity
shear
heating
temperature
fluids
sensors

Cite this

Nguyen, N. T., Ting, T. H., Yap, Y. F., Wong, T. N., Chai, J. C. K., Ong, W. L., ... Yobas, L. (2007). Thermally mediated droplet formation in microchannels. Applied Physics Letters, 91(8), [084102]. https://doi.org/10.1063/1.2773948
Nguyen, Nam Trung ; Ting, Teck Hui ; Yap, Yit Fatt ; Wong, Teck Neng ; Chai, John Chee Kiong ; Ong, Wee Liat ; Zhou, Junlong ; Tan, Say Hwa ; Yobas, Levent. / Thermally mediated droplet formation in microchannels. In: Applied Physics Letters. 2007 ; Vol. 91, No. 8.
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Nguyen, NT, Ting, TH, Yap, YF, Wong, TN, Chai, JCK, Ong, WL, Zhou, J, Tan, SH & Yobas, L 2007, 'Thermally mediated droplet formation in microchannels', Applied Physics Letters, vol. 91, no. 8, 084102. https://doi.org/10.1063/1.2773948

Thermally mediated droplet formation in microchannels. / Nguyen, Nam Trung; Ting, Teck Hui; Yap, Yit Fatt; Wong, Teck Neng; Chai, John Chee Kiong; Ong, Wee Liat; Zhou, Junlong; Tan, Say Hwa; Yobas, Levent.

In: Applied Physics Letters, Vol. 91, No. 8, 084102, 20.08.2007.

Research output: Contribution to journalArticle

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AU - Ong, Wee Liat

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Nguyen NT, Ting TH, Yap YF, Wong TN, Chai JCK, Ong WL et al. Thermally mediated droplet formation in microchannels. Applied Physics Letters. 2007 Aug 20;91(8). 084102. https://doi.org/10.1063/1.2773948