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The actual problem of microrobotic is creating of low cost energy-efficient actuator for mobile microsystems, which are able to simulate the movement of biological objects. In this article, designed and fabricated experimental samples of ionic polymer-metal composite (IPMC) actuators are presented. Highresolution SEM was used to control the electrode thickness and structure. Method of focused ion...
A novel and highly sensitive sensor based on poly[2, 5-di(2-thiophenyl)-1-p-(tolyl)pyrrole] was developed and successfully applied for the electrochemical determination of acetaminophen (AC) in pharmaceutical samples. The voltammetric behaviors of AC on modified pencil graphite electrode were investigated by cyclic voltammetry and differential pulse voltammetry in phosphate buffer solution. The voltammetric...
This paper is devoted to the influence of the direction of the applied electric field (namely perpendicular and parallel to the insulator surface) and the type of insulator materials on the propagation of creeping discharges (pattern and stopping length) in presence of air under standard lightning impulse voltage. The investigated materials belong to two distinguished families among the mostly used...
Migration effects occurring at conductor/XLPE interface are presented in the paper. The phenomenon was studied under various electrical stresses: direct current (DC), pulse-width modulated (PWM) and sinusoidal (SIN). The comparison of aging effects on specimens subjected to the stimuli was presented. The electrical stress results in partial discharges, both around the electrode in the form of surface...
The electric stress created on an insulation system depends on the type of applied voltage stimulus. Real insulating systems often contain defects of different types e.g. cavities, voids within dielectric materials or at boundaries between the dielectric and the conductor which are sources of PD at large enough electric field. These defects can arise in the technological manufacturing processes or...
In this paper a novel investigation into the behavior of the interface between an insulating material and a conductor subjected to various stimuli is presented. Both copper and aluminum wires are used in the windings of electrical machines and also as power cable conductors. During in-service operation, partial discharges (PD) may be initiated in the insulation systems. The paper presents experimental...
Electrospinning is an easy and inexpensive process that produces continuous nanofibres through an electrically charged jet of polymer solution consisting of sufficiently long chain molecules. As reported in the literature, the entire electrospinning process is governed by the external electric field caused by the applied voltage between the electrodes and the induced electric field caused by free...
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