Macromolecular Research, Vol.11, No.2, 110-114, April, 2003
Multiple-Layered Colloidal Assemblies via Dipping Method with an External Electric Field
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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 ℃ in a 1 wt% polystyrene colloidal suspension (ethanol medium). In addition, in order to obtain multiple-layered colloidal crystals, an external electric field 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.
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