Study of the Acoustic Characteristics of Suspensions Based on Glycerol and Synthetic Diamond Microparticles Using a Resonator with a Longitudinal Electric Field

• Published in: Acoustical physics Vol. 69; no. 6; pp. 788 - 797
• Main Authors: Semyonov, A. P., Zaitsev, B. D., Teplykh, A. A., Borodina, I. A.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-12-2023; Springer Nature B.V
• Subjects: Acoustic properties; Acoustic waves; Acoustics; Diamonds; Electric fields; Glycerol; Microparticles; Modulus of elasticity; Physical Acoustics; Physics; Physics and Astronomy; Resonators; Viscosity; Wave velocity; piezoelectric resonator with a longitudinal electric field; electric impedance and admittance; resonance frequency; longitudinal acoustic wave velocity; elastic modulus; suspensions; viscosity coefficient
• ISSN: 1063-7710; 1562-6865
• DOI: 10.1134/S106377102360050X

The acoustic properties of suspensions based on pure glycerol and diamond powder with a particle size of 1–2 μm and different concentrations were studied using a resonator with a longitudinal electric field. A disk resonator made of langasite with round electrodes on both sides of the plate with a frequency of 4.1 MHz, operating on a longitudinal acoustic wave, was completely immersed in a liquid container with the studied suspension. Based on the measured frequency dependences of the real and imaginary parts of the electric impedance of the resonator using an equivalent electromechanical circuit, the longitudinal elastic modulus and longitudinal viscosity coefficient of the samples were determined. Comparison of the experimental dependences of the longitudinal elastic modulus, viscosity coefficient, and longitudinal acoustic wave velocity on the volume concentration of diamond particles in the suspension with the calculated dependences demonstrated good agreement.