In the process of design inductors with ferrite cores, one of important steps is the selection of proper core material. This work presents first steps in the process of development innovative multi-phase coupled inductor. Component will be used in MHz frequency region and it is intended to be used in the compact DC/DC converters. In first iteration, three types of NiZn materials have been selected as core materials for multiphase coupled inductors. Results and analysis of ferrite core contribution to inductance frequency characteristic and Q-factor have been analyzed. SEM structural analysis and stress performance of ferrites are presented and analyzed in this work as additional parameter in process of selection. As result of this research, two ferrite materials are selected to be used as inductor cores in further development of component.
This study aims to discuss the synthesis and fabrication of SnO2-In2O3-based thick-films and their biosensing applications. The structural characterization of SnO2-In2O3 nanocomposites was performed using X-ray diffraction, Raman spectroscopy and transmission electron microscopy. Furthermore, the screen-printing technology was used in the fabrication of conductive electrodes to form an interdigitated capacitive structure, and the sensor layer based on the mixture of SnO2 and In2O3. Moreover, the sensing performance of the developed structure was tested using Pseudomonas aeruginosa (P. aeruginosa) and Staphylococcus aureus (S. aureus) bacteria. In addition, the validation of sensing characteristics was performed by electrochemical impedance spectroscopic and self-resonant frequency analysis. Finally, the sensing properties were analyzed for two consecutive days, and changes in both P. aeruginosa and S. aureus pathogens growing media were also studied.
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