a method and apparatus for the spatial distribution of a filler component within the matrix of a composite material . an electric field is applied to a mixture consisting of two or more components that have different dielectric permittivities , at least one of which is initially in the form of a liquid polymer or pre - polymer . an alternating electric field is established between a pair of electrical conductors or electrodes that are moved relative to each other , so as to alter the spatial intensity of the electric field in a controlled manner . polarized particles or elements of the filler component that are coupled to a moving electrode by a dielectrophoretic force can consequently be dragged into a predetermined spatial configuration . as the size of the inter - electrode gap is changed , the applied voltage can be adjusted in order to maintain electrically induced polarization of the filler component .