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Molecular Transport Directed via Patterned Functionalized Surfaces

Authors

  • Nihan Yonet-Tanyeri,

    1. Beckman Institute, Materials Research Laboratory and Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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  • Rachel C. Evans,

    1. Beckman Institute, Materials Research Laboratory and Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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  • Huilin Tu,

    1. Beckman Institute, Materials Research Laboratory and Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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  • Paul V. Braun

    Corresponding author
    1. Beckman Institute, Materials Research Laboratory and Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
    • Beckman Institute, Materials Research Laboratory and Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.
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Abstract

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Patterned polymer brushes are shown to direct the solid-state diffusion of dye molecules on solid surfaces. The dye molecules diffuse rapidly across the patterned regions, but not on the bare substrate. A poly(dimethyl siloxane) device containing a singular fluidic channel covers the patterns and bare regions and serves to introduce the diffusive species into the polymer brush. Transportation of dye to desired locations on the substrate is demonstrated.

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