title: Ultrasound attenuation and phase velocity of micrometer-sized particle suspensions with viscous and thermal losses.
abstract: The attenuation coefficient and the phase velocity of micrometer-sized polydivinylbenzene particles in water were investigated by ultrasound spectroscopy equipped with 10-30MHz longitudinal wave transducers. While the surrounding liquid could be assumed to be inviscid for large particles with the size comparable to the wavelength of longitudinal ultrasound, the viscous and thermal waves were considered to have important roles with decreasing the particle size because the particle size becomes comparable with those wavelengths. In this study, these contributions were systematically investigated by changing the particle-size.
authors.affiliation: Department of Macromolecular Science and Engineering, Graduate School of Science & Technology, Kyoto Institute of Technology Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
authors.forename: Hayato
authors.initials: H
authors.lastname: Mori
authors.affiliation: Department of Macromolecular Science and Engineering, Graduate School of Science & Technology, Kyoto Institute of Technology Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan. Electronic address: nori@kit.jp.
authors.forename: Tomohisa
authors.initials: T
authors.lastname: Norisuye
authors.affiliation: Department of Macromolecular Science and Engineering, Graduate School of Science & Technology, Kyoto Institute of Technology Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
authors.forename: Hideyuki
authors.initials: H
authors.lastname: Nakanishi
authors.affiliation: Department of Macromolecular Science and Engineering, Graduate School of Science & Technology, Kyoto Institute of Technology Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
authors.forename: Qui
authors.initials: Q
authors.lastname: Tran-Cong-Miyata
keywords: Attenuation; Microparticle; Scattering; Sound velocity