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Updated: Jan 31, 2026

High-speed Continuous-wave Stimulated Brillouin Scattering Spectrometer for Material Analysis
Published on: September 22, 2017
Wave velocities in articular cartilage measured by micro-Brillouin scattering technique
Mami Kawase1, Hirokazu Yasui1, Yoshiaki Shibagaki1
1Laboratory of Ultrasonic Electronics, Applied Ultrasonic Research Center, Doshisha University, Kyotanabe, 610-0321 Kyoto, Japan dmq1018@gmail.com, ctwc0377@gmail.com, yoshiakiduq0358@gmail.com, masahiko.kawa@gmail.com, mmatsuka@mail.doshisha.ac.jp.
Abstract:
Micro-Brillouin scattering was used to measure gigahertz ultrasonic wave velocities in the articular cartilage of a bovine femur. Velocities propagating parallel to the surface of the subchondral bone were 3.36-3.83 × 103 m/s in a dry cartilage sample. Anisotropy measurements were also performed in a 10-μm-diameter local area of the cartilage matrix. A weak velocity anisotropy reflected characteristics of the layers. The velocity also depended on the water content. In the middle layer, the velocity in the dry sample was 3.58 × 103 m/s, whereas that for a fully wet sample was 2.04 × 103 m/s.
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