Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
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Multiple-Layered Colloidal Assemblies via Dipping Method with an External Electric Field

  • Im, Sang-Hyuk (Department of Chemical & Biomolecular Engineering Korea Advanced Institute of Science and Technology) ;
  • Park, O-Ok (Department of Chemical & Biomolecular Engineering Korea Advanced Institute of Science and Technology) ;
  • Kwon, Moo-Hyun (Department of Chemical Engineering, Woosuk University)
  • Published : 2003.04.01
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Abstract

When using the dipping method for crystal formation, mono-layered colloidal crystal structures depend upon the lift-up rate of a glass substrate. The mono-layered colloidal crystals showed the highest quality when the glass substrate was raised at a rate of 3 mm/min at 25 $^{\circ}C$ in a 1 wt% polystyrene colloidal suspension (ethanol medium). In addition, in order to obtain multiple-layered colloidal crystals, an external electric Held was introduced. Multiple-layered colloidal crystals were successfully obtained via this method. The colloidal particles were well ordered over large areas and assembled into a homogeneous structure.

Keywords

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