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Thermocapillary actuation of binary drops on solid surfaces

Publication ,  Journal Article
Zhao, Y; Liu, F; Chen, CH
Published in: Applied Physics Letters
September 5, 2011

On hydrophobic solid surfaces, aqueous drops are typically not conducive to thermocapillary actuation. This letter reports thermal mobilization of water drops by encapsulating them with a long-chain alcohol. On a parylene-coated silicon substrate, a water-heptanol binary drop can assume a unique shape: the dome-shaped water drop is capped by a layer of heptanol, and the heptanol cap protrudes through a "foot" to a precursor film. For intermediate drop diameters, the speed of the binary drop is linearly proportional to its diameter and the imposed temperature gradient, with an offset accounting for the hysteresis force. © 2011 American Institute of Physics.

Duke Scholars

Published In

Applied Physics Letters

DOI

ISSN

0003-6951

Publication Date

September 5, 2011

Volume

99

Issue

10

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 02 Physical Sciences
 

Citation

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MLA
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Zhao, Y., Liu, F., & Chen, C. H. (2011). Thermocapillary actuation of binary drops on solid surfaces. Applied Physics Letters, 99(10). https://doi.org/10.1063/1.3632041
Zhao, Y., F. Liu, and C. H. Chen. “Thermocapillary actuation of binary drops on solid surfaces.” Applied Physics Letters 99, no. 10 (September 5, 2011). https://doi.org/10.1063/1.3632041.
Zhao Y, Liu F, Chen CH. Thermocapillary actuation of binary drops on solid surfaces. Applied Physics Letters. 2011 Sep 5;99(10).
Zhao, Y., et al. “Thermocapillary actuation of binary drops on solid surfaces.” Applied Physics Letters, vol. 99, no. 10, Sept. 2011. Scopus, doi:10.1063/1.3632041.
Zhao Y, Liu F, Chen CH. Thermocapillary actuation of binary drops on solid surfaces. Applied Physics Letters. 2011 Sep 5;99(10).

Published In

Applied Physics Letters

DOI

ISSN

0003-6951

Publication Date

September 5, 2011

Volume

99

Issue

10

Related Subject Headings

  • Applied Physics
  • 51 Physical sciences
  • 40 Engineering
  • 10 Technology
  • 09 Engineering
  • 02 Physical Sciences