| Presentation | 2020-08-26 Behavior of powder levitated in ultrasonic waveguide Hiroyuki Komatsu, Daisuke Koyama, Mami Matsukawa, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this report, the behavior of powder trapped in an acoustic standing wave generated in an ultrasonic waveguide was investigated. A bolt-clamped Langevin transducers (BLT) with a step horn for vibration amplitude expansion was attached to the bottom of an aluminum hemispherical vibrator and driven by a continuous sinusoidal signal with a resonance frequency of 27 kHz and 180 Vpp to radiate high-intensity ultrasound in air. The same ultrasound vibrator was prepared and they were faced each other so that a high-intensity ultrasound standing wave can be generated between them. The powder was successfully trapped around the nodal position of the standing wave. The behavior of the powder levitated in the standing wave was observed and the volume and mass of the powder were estimated from captured images. The mass of the powder levitated by the acoustic radiation force was approximately 4.0 mg in the case of potato starch. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Ultrasonic levitation / acoustic standing wave / powder |
| Paper # | US2020-26 |
| Date of Issue | 2020-08-19 (US) |
| Conference Information | |
| Committee | US |
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| Conference Date | 2020/8/26(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Underwater acoustics, etc. |
| Chair | Hikaru Miura(Nihon Univ.) |
| Vice Chair | Jun Kondo(Shizuoka Univ.) / Yoshikazu Koike(Shibaura Inst. of Tech.) |
| Secretary | Jun Kondo(Doshisha Univ.) / Yoshikazu Koike(Tohoku Univ.) |
| Assistant | Shinnosuke Hirata(Tokyo Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Ultrasonics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Behavior of powder levitated in ultrasonic waveguide |
| Sub Title (in English) | |
| Keyword(1) | Ultrasonic levitation |
| Keyword(2) | acoustic standing wave |
| Keyword(3) | powder |
| 1st Author's Name | Hiroyuki Komatsu |
| 1st Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 2nd Author's Name | Daisuke Koyama |
| 2nd Author's Affiliation | Doshisha University(Doshisha Univ.) |
| 3rd Author's Name | Mami Matsukawa |
| 3rd Author's Affiliation | Doshisha University(Doshisha Univ.) |
| Date | 2020-08-26 |
| Paper # | US2020-26 |
| Volume (vol) | vol.120 |
| Number (no) | US-139 |
| Page | pp.pp.33-36(US), |
| #Pages | 4 |
| Date of Issue | 2020-08-19 (US) |