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Issue 18, 2016
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Connecting and disconnecting nematic disclination lines in microfluidic channels

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Abstract

Disclination lines in nematic liquid crystals can be used as “soft rails” for the transport of colloids or droplets through microfluidic channels [A. Sengupta, C. Bahr and S. Herminghaus, Soft Matter, 2013, 9, 7251]. In the present study we report on a method to connect and disconnect disclination lines in microfluidic channels using the interplay between anchoring, flow, and electric field. We show that the application of an electric field establishes a continuous disclination that spans across a channel region in which a disclination usually would not exist (because of different anchoring conditions), demonstrating an interruptible and reconnectable soft rail for colloidal transport.

Graphical abstract: Connecting and disconnecting nematic disclination lines in microfluidic channels

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Publication details

The article was received on 22 Dec 2015, accepted on 08 Apr 2016 and first published on 11 Apr 2016


Article type: Paper
DOI: 10.1039/C5SM03092G
Citation: Soft Matter, 2016,12, 4266-4273

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    Connecting and disconnecting nematic disclination lines in microfluidic channels

    H. Agha and C. Bahr, Soft Matter, 2016, 12, 4266
    DOI: 10.1039/C5SM03092G

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