Abstract
Selected Papers: Introduction Historical overview Advantages of ultrasound over traditional characterization techniques. Fundamentals of Interface and Colloid Science: Real and model dispersions Parameters of the model dispersion medium Parameters of the model dispersed phase Parameters of the model interfacial layer Interactions in colloid and interface science Traditional particle sizing. Fundamentals of Acoustics in Liquids: Longitudinal waves and the wave equation Acoustics and its relation to rheology Acoustic impedance Propagation through phase boundaries - reflection Propagation in porous media Chemical composition influence. Acoustic Theory for Particulates: Extinction=absorption + scattering Superposition approach Acoustic theory for a dilute system Ultrasound absorption in concentrates Ultrasound scattering Input parameters. Electroacoustic Theory: The theory of Ion Vibration Potential (IVP) The low frequency electroacoustic limit - Smoluchowski limit (SDEL) The O'Brien theory The colloid vibration current in concentrated systems Qualitative analysis. Experimental Verification of the Acoustic and Electroacoustic Theories: Viscous losses Thermal losses Structural losses Scattering losses Electroacoustic phenomena Acoustic and Electroacoustic Measurement Techniques Historical perspective Difference between measurement and analysis Measurement of attenuation and sound speed using interferometry Measurement of attenuation and sound speed using the transmission technique Precision, accuracy, and dynamic range for transmission measurements Analysis of attenuation and sound speed to yield desired outputs Measurement of electroacoustic properties Zeta potential calculation from the analysis of CVI Measurement of acoustic impedance. Applications of Acoustics for Characterizing Particulate Systems: Characterization of aggregation and flocculation Stability of emulsions and microemulsions Particle sizing in mixed colloids with several dispersed phases Chemical-mechanical polishing Large particle resolution Titration using electroacoustics Colloids with high ionic strength - electroacoustic background Effect of air bubbles Table of applications.
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