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Self-Breakup of Microdroplets by Molecular Self-Assembly

[+] Author Affiliations
Gary C. H. Mo, Daniel Y. Kwok

University of Alberta, Edmonton, AB, Canada

Paper No. ICMM2005-75179, pp. 261-266; 6 pages
doi:10.1115/ICMM2005-75179
From:
  • ASME 3rd International Conference on Microchannels and Minichannels
  • ASME 3rd International Conference on Microchannels and Minichannels, Part B cont’d
  • Toronto, Ontario, Canada, June 13–15, 2005
  • Conference Sponsors: Nanotechnology Institute
  • ISBN: 0-7918-4185-5 | eISBN: 0-7918-3758-0
  • Copyright © 2005 by ASME

abstract

We report a method of producing minute micro-droplets through nanoscale molecular self-assembly from a given liquid volume without external input. By the branching of hydrophobic restrictions, the drop is forced to separate while translating on a flat surface. Symmetry in the drop front wetted perimeter conduces to equal division of the drop. We show that at least 3 divisions can be performed sequentially on a 1.5 microliter drop to give minute droplets of approximately equal volumes. A division of carrier liquid volume by 1/23 enables multiple analyses on many separate stations in one microfluidic application.

Copyright © 2005 by ASME
Topics: Self-assembly

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