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To coat microsized poly(methyl methacrylate) (PMMA) particles of uniform size and density on poly(ethylene terephthalate) (PET) films, we introduce an electrospraying technique that uses a target electrode applied with an ac electric field. Using the apparatus and various material properties, we could achieve good collection and a uniform size distribution of hemispherical droplets on the PET film...
The frequency and temperature dependence of the complex dielectric constant of Bi4-xLaxTi3O12 (BLT, x=0.9) ferroelectric thin film was studied in the frequency range of 10-1∼106 Hz and the temperature range of 298∼673 K. A low frequency dielectric dispersion (LFDD) was found. A model was proposed to account for this observed phenomena. The complex dielectric constant data obtained in the measured...
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