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3-dimensional(3-D)control of insulating boron nitride(BN)nanofillers in polymer-nanocomposite films were investigated.BN nanosheets,pretreated by exfoliation and functionalization of the surface were controlled under application of switching nanosec pulse electric field.A Si-micromold with micro-protrusions on the surface was used as an electrode in order to enhance the electric concentration and to control the localization of the BN assembly during the electric field application.The coordination effects of electric concentration,di-polarization,static energy,surface modification and Columbic attraction are considered as main factors that determine the controlled BN assembly.