Method for making materials having uniform limited coalescence domains

摘要

A light-modulating, electrically responsive sheet including a substrate and an electrically conductive layer formed over the substrate. The sheet further includes, in an aqueous bath, an immiscible, field responsive light-modulating material along with a quantity of colloidal particles wherein the colloidal particles limit coalesced domain size and a binder; blending the constituents of the aqueous bath to form a dispersion of said field-responsive, light-modulating material below a coalescence size which sets to form limited coalescence domains having a uniform size; coating said material over the substrate; and drying said coated material to form a set of uniform domains so that such dispersion coalesces to form a set of uniform limited coalescence domains having a plurality of electrically responsive optical states. <IMAGE>