Krassimir H. Denishev

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Piezoelectric films of poly(vinylidene fluoride) (PVDF) were prepared by casting and spin coating on silicon and glass substrates. The effect of the drying temperature and the post-annealing temperature on the film morphology was studied with optical microscopy. It was chosen the optimal combination of deposition conditions, regarding the wetting of the(More)
Thin polyvinylidene fluoride (PVDF) layers were received by spray deposition technique on polyethylene terephthalate substrate and then were polarized with voltages in range of -40V to +40V. The influence of the polarization on the dielectric parameters of PVDF layer was defined by the capacitance voltage characteristics, which were measured at 1kHz and(More)
The electromagnetic force that is most commonly used in microactuators is not the only driving force. A MEMS variable capacitor could be driven by vertical thermal actuators. Thermal actuators can generate relatively large force and displacement at low actuating voltage. The MEMS capacitor is created by using surface micromachining. The power consumption(More)
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