Deposition and drying dynamics of liquid crystal droplets

Zoey S. Davidson, Yongyang Huang, Adam Gross, Angel Martinez, Tim Still, Chao Zhou, Peter J. Collings, Randall D. Kamien and A. G. Yodh ()
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Zoey S. Davidson: University of Pennsylvania
Yongyang Huang: Lehigh University
Adam Gross: University of Pennsylvania
Angel Martinez: University of Pennsylvania
Tim Still: University of Pennsylvania
Chao Zhou: Lehigh University
Peter J. Collings: University of Pennsylvania
Randall D. Kamien: University of Pennsylvania
A. G. Yodh: University of Pennsylvania

Nature Communications, 2017, vol. 8, issue 1, 1-7

Abstract: Abstract Drop drying and deposition phenomena reveal a rich interplay of fundamental science and engineering, give rise to fascinating everyday effects (coffee rings), and influence technologies ranging from printing to genotyping. Here we investigate evaporation dynamics, morphology, and deposition patterns of drying lyotropic chromonic liquid crystal droplets. These drops differ from typical evaporating colloidal drops primarily due to their concentration-dependent isotropic, nematic, and columnar phases. Phase separation occurs during evaporation, and in the process creates surface tension gradients and significant density and viscosity variation within the droplet. As a result, the drying multiphase drops exhibit different convective currents, drop morphologies, and deposition patterns (coffee-rings).

Date: 2017
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms15642

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DOI: 10.1038/ncomms15642

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