title: Sound velocity and attenuation coefficient of hard and hollow microparticle suspensions observed by ultrasound spectroscopy.
abstract: Size and elastic properties of micro-particles suspended in liquid can be acoustically determined by ultrasound attenuation and velocity measurements with the aid of elastic scattering theories and a dispersion relation. While quantitative evaluation for hard micron-sized spheres using the theories is available in literature, that for hollow particles is not yet achieved. In this study, we show that the shell thickness and the elastic modulus of hollow particles can be quantitatively evaluated by ultrasound spectroscopy. Several kinds of microparticles including polystyrene rigid particles, polydivinylbenzene rigid particles, borosilicate hollow particles, and phenolic-resin hollow particles were examined as a function of the particle concentration.
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: Kohjiro
authors.initials: K
authors.lastname: Kubo
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: Thao Nguyen
authors.initials: TN
authors.lastname: Tran
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: Daisuke
authors.initials: D
authors.lastname: Shibata
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; Hollow particle; Scattering; Sound velocity