the present invention relates to a systematic process for the creation of functionally organized , spatially patterned assemblies polymer - microparticle composites including the ac electric field - mediated assembly of patterned , self supporting organic films and organic - microparticle composite films of tailored composition and morphology ; the present invention further relates to the incorporation of said assemblies into other structures . the present invention . also relates to the application of such functional assemblies in materials science and biology . additional areas of application include sensors , catalysts , membranes , micro - reactors , smart materials . miniaturized format for generation of multifunctional thin films . provides a simple set - up to synthesize thin films of tailored composition and morphology .