Электронный каталог

Статья

Bica, I.
Passive Electrical Components Based on Cotton Fabric Decorated with Iron Oxides Microfibers: The Influence of Static and Pulsed Magnetic Fields on the Equivalent Electrical Properties / I.Bica, E.M.Anitas, H.-J.Choi, S.Wang // Micromachines [Electronic resource]. – 2023. – Vol.14, No.11. – P.2061. – URL: https://doi.org/10.3390/mi14112061. – Bibliogr.:41.

In this work, environmentally friendly and low-cost passive electrical components (PECs) are manufactured based on composites consisting of cotton fabrics soaked with solutions of silicone oil and different amounts of iron oxides microfibers (𝜇Fe). The 𝜇Fe consists of a mixture of three phases: hematite (𝛼-Fe2O3), maghemite (𝛾-Fe2O3), and magnetite (Fe3O4). The equivalent electrical capacitance (𝐶p) and resistance (𝑅p) of PECs are measured as a function of magnetic flux density B in a static and pulsed magnetic field superimposed on an alternating electric field of frequency 1 kHz. The relative variation in the hysteresis curves for both 𝐶p and 𝑅p are obtained by measuring them in the ascending and then the descending mode of B. We show that all these three quantities are sensibly influenced by the volume fractions of 𝜇Fe and by the values of B. The main influence on this behavior is attributed to the semiconductor properties of the 𝛼-Fe2O3 and 𝛾-Fe2O3 components of the oxide microfibers. In addition, it is found that at 𝐵≃ 175 mT, the maximum relative variance of the hysteresis curve is about 3.35% for 𝐶p and 3.18 % for 𝑅p. When a pulsed magnetic field is used, it is shown that 𝐶p and 𝑅p closely follow the variation in the magnetic field. Thus, the resulting electrical properties of PECs, together with the fast response to the application of pulsed magnetic fields, make them useful in the fabrication of various devices, such as electric, magnetic, and deformation fields, or mechanical stress sensors with applications in protection against electromagnetic smog, healthcare monitoring, or for human–machine interfacing.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 33 а - Нанофизика. Нанотехнология$
Спец.(статьи,препринты) = С 332 - Электромагнитные взаимодействия
Бюллетени = 6/024