Ultrasound attenuation and phase velocity of micrometer-sized particle suspensions with viscous and thermal losses

Hayato Mori; Tomohisa Norisuye; Hideyuki Nakanishi; Qui Tran-Cong-Miyata

doi:10.1016/j.ultras.2017.03.016

Ultrasound attenuation and phase velocity of micrometer-sized particle suspensions with viscous and thermal losses

Ultrasonics. 2018 Feb:83:171-178. doi: 10.1016/j.ultras.2017.03.016. Epub 2017 Mar 30.

Authors

Hayato Mori¹, Tomohisa Norisuye², Hideyuki Nakanishi¹, Qui Tran-Cong-Miyata¹

Affiliations

¹ Department of Macromolecular Science and Engineering, Graduate School of Science & Technology, Kyoto Institute of Technology Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan.
² 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.

PMID: 28389013
DOI: 10.1016/j.ultras.2017.03.016

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.

Keywords: Attenuation; Microparticle; Scattering; Sound velocity.