Effect of Magnetic Field and Aggregation on Electrical Characteristics of Magnetically Responsive Suspensions for Novel Hybrid Liquid Capacitor

• Main Author: Kunio Shimada
• Format: Article
• Language: English
• Published: MDPI AG 2019-06-01
• Series: Magnetochemistry
• Subjects: magnetic compound fluid (MCF); magnetic fluid; intelligent fluid; smart material; natural rubber; polymer; liquid; aggregation; particle; magnetic field; electrical characteristics; electric charge; capacitor; sensor; resistivity; electric conductivity; tunnel theory
• Online Access: https://www.mdpi.com/2312-7481/5/2/38

Magnetically responsive fluid based on polymers of natural rubber (NR-latex) involves a magnetic compound fluid (MCF) rubber liquid. For a wide range of engineering applications of suspensions or liquids with particles, their electrical characteristics of fluidic suspensions are investigated to obtain useful results that might be important in the study of devices, such as fluidic sensors and capacitors. The author of the present paper proposes that MCF rubber liquid can be produced by combining MCF and rubber latex. The influence of the aggregation of magnetic particles and rubber molecules on electrical characteristics under a magnetic field was investigated by measuring electrical properties under an applied voltage. The electrical characteristics change with a linear or a nonlinear response, based on conditions of particle aggregation. The capacity of the electric charge also changes with the conditions of particle aggregation. These results show that MCF rubber liquid is a novel hybrid capacitor.