Acoustics of Nanodispersed Magnetic Fluids: 1st Edition (Hardback) book cover

Acoustics of Nanodispersed Magnetic Fluids

1st Edition

By V. Polunin

CRC Press

472 pages | 169 B/W Illus.

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Description

Acoustics of Nanodispersed Magnetic Fluids presentskey information on the acoustic properties of magnetic fluids. The book is based on research carried out by the author as well as on many publications in both the Russian and foreign scientific literature from 1969 onwards.

It describes a wide variety of topics, which together lay the foundation of a new scientific research area: the acoustics of nanodispersed media. The book examines the nanoscale structure of matter in specific areas and discusses the following:

  • Model theory and known features of the propagation of sound waves in magnetised fluids
  • Acoustomagnetic and magnetoacoustic effects in magnetic fluids
  • Acoustomagnetic spectroscopy of vibrational modes in the liquid-shell system
  • Vibration and rheological effects of magnetised magnetic fluids
  • Acoustometry of the shape of magnetic nanoaggregates and non-magnetic microaggregates
  • Acoustogranulometry, a new method for studying the physical properties of magnetic nanoparticles dispersed in a carrier fluid

The book is a valuable resource for engineers and researchers in the fields of acoustics, physical acoustics, magnetic hydrodynamics, and rheology physics. The experimental methods, which are described in this book, are based on incompatible features of magnetic fluids, i.e. strong magnetism, fluidity and compressibility. As a result, this can find industrial application in advanced technology. It is also useful for both advanced undergraduate and graduate students studying nanotechnology, materials science, physical and applied acoustics.

Reviews

"Acoustics affects the interests of science, engineering, medicine, health and safety, where unique acoustic properties of magnetic fluids will be useful, so the appearance of book by Vyacheslav Mikhailovich Polunin Acoustics of Nanodispersed Magnetic Fluids in public media is well-timed and currently important."

—Professor V. G. Bashtovoi, heads the Department UNESCO of the Belarusian National Technical University, Minsk

Table of Contents

Equilibrium Magnetisation of Magnetic Fluids

General Information on Magnetic Fluids

The Equation of the Magnetic State

The Method of Measurement of the Magnetic Parameters of Magnetic Fluids and Ferrosuspensions

Comparison of Equilibrium Magnetisation of Magnetic Fluid and Ferrosuspension

Magnetisation of the Specimen in Quasi Static Deformation

Dynamic Deformation of the Magnetised Specimen

Perturbation of Magnetic Induction By Sound

Perturbation of Magnetisation of the Magnetic Fluid By Sound

Elastic Oscillations of the Magnetic Fluid Cylinder at the Basic Frequency

Acoustomagnetic Effect

Method for the Experimental Investigation of the Acoustomagnetic Effect

Experimental Results and Analysis

Dependence of the Amplitude of the Acoustomagnetic Effect on Frequency Along the Length of the Magnetic Fluid Cylinder

Identification of Oscillation Modes

Speed of Sound

The Additive Model of Elasticity

Method for Measuring the Speed of Sound

Results of Measurement of the Speed of Sound in Non-Magnetised Magnetic Fluids

Temperature Dependence of the Speed of Sound

Temperature Dependence of Adiabatic Compressibility

The Non-Linearity Parameter

Dispersion of the Speed of Sound in an Unlimited Magnetic Fluid

Effect of the Magnetic Field on the Speed of Sound

Mechanisms of the Field Dependence of the Speed of Sound

Absorption and Scattering of Sound

The Mechanisms of Adsorption of Sound Waves

Acoustic Scattering

The Method For Measuring the Absorption Coefficient

Discussion of the Experimental Results. Non-Magnetised Fluid

Discussion of the Experimental Results. The Magnetised Fluid

Some Special Features of the Passage of Ultrasound Through a Ferrosuspension

Optimisation of the Acoustic Parameters of Magnetic Fluids and Ferrosuspensions

Ponderomotive Mechanism of Electromagnetic Excitation of Sound

Magnetoacoustic Effect in the Kilohertz Frequency Range

Cylindrical Magnetic Fluid Resonator

The Flat Magnetic Fluid Source of Sound Oscillations

Resonance Excitation of Sound in an Unlimited Magnetic Fluid

Oscillations of the Form of the Magnetic Fluid Droplet

Oscillations of the Magnetic Fluid Chain

Magnetic Fluid Chain With the Elasticity of the Ponderomotive Type

The Mechanism of Formation of Sound Oscillations in an Air Resonator

Magnetoacoustic Effect in the Megahertz Frequency Range

Experimental Equipment for Investigating the Magnetoelastic Effect

in the Megahertz Frequency Range

The Method of Absolute Measurements of the Oscillation Amplitude

Measurement Results

Failure of the Ponderomotive Mechanism

The Mechanism of Linear Magnetostriction

The Mechanism of Bulk Magnetostriction

Magnetocalorific Effect As A Possible Mechanism of Excitation Of

Elastic Oscillations

Other Possible Mechanisms

Magnetic Fluid Compacting As An Oscillatory System

The Magnetic Fluid Membrane

Elastic and Electrodynamic Properties of the Magnetic Fluid Membrane

Non-Linear Oscillations of A Thin Magnetic Fluid Bridge

The Kinetic Properties of the Magnetic Fluid Membrane

Comparison of Two Methods of Measuring the Critical Pressure Drop

Investigation of the Kinetic–Strength Properties of the Magnetic Fluid Membrane by the Optical Method

Acoustomagnetic Spectroscopy

Dispersion of the Speed of Sound in the Fluid – Cylindrical Shell System

Description of the Problem

The Experimental Technique Based on the AME

Some of Special Features of the Study of Oscillation Modes

On the Influence of Inhomogeneity of the Magnetic Field

Experimental Results and Analysis

Acoustic Granulometry

Prologue

Mechanism of Perturbation of Magnetisation in the Magnetic Field Transverse to the Soundwave

Calculation of the Dynamic Demagnetising Factor

Magnetic Granulometry

Acoustic Granulometry of Magnetic Nanoparticles

The Size Distribution of Magnetic Nanoparticles

Motivation of Studies of the ‘Solid-State’ Mechanism of Magnetisation of the Magnetic Fluid

Calculated Value of the Magnetic Moment of the Nanoparticles and the Dynamic Demagnetising

Factor From the Data For Highly Concentrated Magnetic Fluids

Mechanism of Thermal Relaxation of Magnetisation of Magnetic Fluid

Acoustometry of the Shape of Magnetic Nanoaggregates and Non-Magnetic Microaggregates

Column of the Magnetic Fluid in the Tube As the Inertial–Viscous Element of the Oscillatory System

Vibration–Rheological Effect

On A ‘Non-Magnetic’ Dissipation Mechanism of the Energy of the Oscillatory System

Comparing the Findings of the Model Theory With Experiment

Rheology of Magnetic Fluid With Anisotropic Properties

Measurement Procedure

Results and Analysis

The Expansion of the Experimental Base Vibrorheology of MF on the Basis of the Magnetic Levitation Effect

Conclusions

Appendix

References

Index

About the Author

Vyacheslav Mikhailovich Polunin has been working in the Physics Department of Southwest State University in Kursk (Russia) for 40 years: as a senior lecturer, reader, and currently heads the department. He earned his PhD in physics from the Leningrad State University in Saint Petersburg, Russia. Dr. Polunin’s research interests include molecular physics, physical acoustics, and magnetohydrodynamics. He is also the author or co-author of nearly 350 scientific publications in Russian national science journals and many European countries. Dr. Polunin holds 15 author’s certificates and patents.

Subject Categories

BISAC Subject Codes/Headings:
SCI013050
SCIENCE / Chemistry / Physical & Theoretical
SCI055000
SCIENCE / Physics
TEC021000
TECHNOLOGY & ENGINEERING / Material Science