Presentation 2014-07-11
Studies on Dynamics of Submicron Particles in Suspensions Probed by High Frequency Dynamic Ultrasound Scattering Techniques
Tomohisa NORISUYE, Kenta IGARASHI, Keisuke KOBAYASHI, Hideyuki NAKANISHI, Qui TRAN-CONG MIYATA,
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Abstract(in English) Particle sizing in range 200 nm - 2μm performed by dynamics ultrasound scattering (DSS) technique using a high frequency (30MHz) transducer. Although the DSS results were in good agreement with these obtained by a scanning electron microscope for the particle size below 300 nm, serious underestimation was found as the particle size increased. Since the main cause of the difference was considered to be the coupling of different dynamics, e.g., thermal diffusion and sedimentation of microparticles, a novel frequency-domain analysis utilizing the advantages of ultrasound pulses was carried out. By the technique, we succeeded in discrimination of Brownian motion and sedimentation, and found both dynamics played an important role in the particle motion for the particle size around 2μm.
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Keyword(in English) Ultrasound / Scattering / Microparticles
Paper # US2014-29
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Committee US
Conference Date 2014/7/4(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
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Title (in English) Studies on Dynamics of Submicron Particles in Suspensions Probed by High Frequency Dynamic Ultrasound Scattering Techniques
Sub Title (in English)
Keyword(1) Ultrasound
Keyword(2) Scattering
Keyword(3) Microparticles
1st Author's Name Tomohisa NORISUYE
1st Author's Affiliation Graduate School of Science & Technology, Kyoto Institute of Technology()
2nd Author's Name Kenta IGARASHI
2nd Author's Affiliation Graduate School of Science & Technology, Kyoto Institute of Technology
3rd Author's Name Keisuke KOBAYASHI
3rd Author's Affiliation Graduate School of Science & Technology, Kyoto Institute of Technology
4th Author's Name Hideyuki NAKANISHI
4th Author's Affiliation Graduate School of Science & Technology, Kyoto Institute of Technology
5th Author's Name Qui TRAN-CONG MIYATA
5th Author's Affiliation Graduate School of Science & Technology, Kyoto Institute of Technology
Date 2014-07-11
Paper # US2014-29
Volume (vol) vol.114
Number (no) 137
Page pp.pp.-
#Pages 4
Date of Issue