HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >

Modeling photoacoustic pressure generation in colloidal suspensions at different volume fractions based on a multi-scale approach

This item is licensed under:Creative Commons Attribution 4.0 International

Files in This Item:
1-s2.0-S2213597922000349-main.pdf1.31 MBPDFView/Open
Please use this identifier to cite or link to this item:

Title: Modeling photoacoustic pressure generation in colloidal suspensions at different volume fractions based on a multi-scale approach
Authors: Fujii, Hiroyuki Browse this author →KAKEN DB
Terabayashi, Iori Browse this author
Kobayashi, Kazumichi Browse this author →KAKEN DB
Watanabe, Masao Browse this author →KAKEN DB
Keywords: Modeling photoacoustic pressure generation
Grüneisen parameter
Light scattering properties
Hard-sphere interaction between colloidal particles
Multi-scale approach
Issue Date: 21-May-2022
Publisher: Elsevier
Journal Title: Photoacoustics
Volume: 27
Start Page: 100368
Publisher DOI: 10.1016/j.pacs.2022.100368
Abstract: Further development of quantitative photoacoustic tomography requires understanding the photoacoustic pressure generation by modeling the generation process. This study modeled the initial photoacoustic pressure in colloidal suspensions, used as tissue phantoms, at different volume fractions on a multi-scale approach. We modeled the thermodynamic and light scattering properties on a microscopic scale with/without treating the hard-sphere interaction between colloidal particles. Meanwhile, we did the light energy density on a macroscopic scale. We showed that the hard-sphere interaction significantly influences the initial pressure and related quantities at a high volume fraction except for the thermodynamic properties. We also showed the initial pressure at the absorber inside the medium logarithmically decreases with increasing the volume fractions. This result is mainly due to the decay of the light energy density with light scattering. Our numerical results suggest that modeling light scattering and propagation is crucial over modeling thermal expansion.
Rights: ©2022 The Author(s). Published by Elsevier GmbH. This is an open access article under the CC BY license(
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 藤井 宏之

Export metadata:

OAI-PMH ( junii2 , jpcoar_1.0 )

MathJax is now OFF:


 - Hokkaido University