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Electrostatic Force Microscope (EFM) is applied to study of the properties of surface charge of polyimide films in micro-nanometer scale. The charge was injected by different kind of coating tips to the surface of polyimide films. After that the surface charge was characterized by EFM, the result indicated that it was difficult to inject charge with Pt/Ir coating tip for larger work function than...
LDPE/Fe3O4 composite films with Fe3O4 nanoparticle being modified by a surfactant have been successfully prepared using conventional melt-blending technique in a sigma internal mixer. The LDPE/Fe3O4 composite films were characterized with SEM, FTIR.And the dielectrical property of the LDPE/Fe3O4 composite films were measured. FTIR and SEM results showed that the composite films were mainly composed...
The multiferroic materials BiFeO3 nanoparticles of dispersion uniformity were synthesized by the citric acid sol-gel method, using the iron(III) nitrate and bismuth nitrate as the reactants and dilute nitric acid as the catalyst. The physical and chemical characteristics, such as structure, morphology and purity of BiFeO3 nanoparticles were investigated by thermogravimetry- differential scanning calorimetry...
A new kind of one dimensional (1-D) nano - material was successfully prepared by introducing poly (methyl methacrylate) (PMMA) into a kind of track etch nano-hole polymer films via polymerization. The dielectric characteristics of these nano-materials were investigated by high-voltage device and precision impedance analyzer etc. This kind of 1-D nano - material exhibits a better dielectric strength...
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