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Impedance spectroscopy is a very powerful tool to characterize and separate physical processes that can occur simultaneously in any material. For parallel plate capacitors, consideration of the modulus has proven to be very effective to study materials that exhibit a spatial variation in conductivity in the direction of the electric field. This was demonstrated with in-situ impedance measurements...
This paper presents a technique for the characterization of single-cell electrical properties (specific membrane capacitance and cytoplasm conductivity) at a speed of 5–10 cells per second (vs. minutes per cell using existing techniques). When a cell flows through a microfluidic constriction channel, electrical impedance at multiple frequencies is measured. Electrical and geometrical models were developed...
Investigation of electrical properties along with molecular expressions of the keratinocyte and fibroblast under different physiological conditions can provide insight into their functioning which can contribute significantly towards skin tissue engineering application. For electrical characterization, cell based biosensors are usually designed with photolithographically patterned electrodes which...
This paper describes the high-frequency characteristics of a multilayered planar transformer consisting of two planar coils and Co-Fe amorphous magnetic films. The parameters of transformer operation obtained by finite element method (FEM) calculations are compared with measured values. The analysis shows that characteristic evaluation is useful for a simple understanding of the operation of a transformer...
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