| Presentation | 2016-01-28 Investigation of the ultrasonic irradiation for microcapsules to understand the disruption mechanism of algae Masaki Kurokawa, Yoshinori Ike, Takashi ikeno, Ken Yamamoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Algae can be disrupted by ultrasonication; however, the mechanism of disruption is still unclear. Previously, the frequency dependence of disruption has been investigated using suspensions of the algae Chaetoceros gracilis, C. calcitrans, and Nannochloropsis sp. at 20 kHz, 400 kHz, 1.0 MHz, 2.2 MHz, 3.3 MHz, and 4.3 MHz, and the frequency depended on the species of algae. Because the disruption depends on the physical properties of the algae, we focused on the mechanical resonance of the algae. In this study, we performed the same disruption experiment on microcapsules, which have a simpler structure than algae and have physical properties, such as elastic modulus and size, that can be altered. The resonance frequency of the microcapsules was simultaneously estimated and compared with the results. The microcapsule disruption was frequency dependent and followed the same trend as the estimated resonance frequency. Therefore, the ultrasonic disruption of microcapsules and algae is caused by their mechanical resonance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Ultrasonic cavitation / Algae / Microcapsule / Mechanical resonance |
| Paper # | US2015-86 |
| Date of Issue | 2016-01-21 (US) |
| Conference Information | |
| Committee | US / EA |
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| Conference Date | 2016/1/28(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kansai University, Centenary Memorial Hall |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | [Joint Meeting on Acoustics and Ultrasonics Subsociety] Engineering/Electro Acoustics, Ultrasonic and Underwater Acoustics, and Related Topics |
| Chair | Youichi Ito(Nihon Univ.) / Yoichi Haneda(Univ. of Electro-Comm.) |
| Vice Chair | Mami Matsukawa(Doshisha Univ.) / Nobuyuki Endoh(Kanagawa Univ.) / Yukio Iwaya(Tohoku Gakuin Univ.) / Mitsunori Mizumachi(Kyushu Inst. of Tech.) |
| Secretary | Mami Matsukawa(Univ. of Electro-Comm.) / Nobuyuki Endoh(Univ. of Electro-Comm.) / Yukio Iwaya(NTT) / Mitsunori Mizumachi(KDDI R&D Labs.) |
| Assistant | Hideyuki Hasegawa(Univ. of Toyama) / Shoichi Koyama(Univ. of Tokyo) |
| Paper Information | |
| Registration To | Technical Committee on Ultrasonics / Technical Committee on Engineering Acoustics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Investigation of the ultrasonic irradiation for microcapsules to understand the disruption mechanism of algae |
| Sub Title (in English) | |
| Keyword(1) | Ultrasonic cavitation |
| Keyword(2) | Algae |
| Keyword(3) | Microcapsule |
| Keyword(4) | Mechanical resonance |
| 1st Author's Name | Masaki Kurokawa |
| 1st Author's Affiliation | Kansai University(Kansai Univ.) |
| 2nd Author's Name | Yoshinori Ike |
| 2nd Author's Affiliation | Kansai University(Kansai Univ.) |
| 3rd Author's Name | Takashi ikeno |
| 3rd Author's Affiliation | Kansai University(Kansai Univ.) |
| 4th Author's Name | Ken Yamamoto |
| 4th Author's Affiliation | Kansai University(Kansai Univ.) |
| Date | 2016-01-28 |
| Paper # | US2015-86 |
| Volume (vol) | vol.115 |
| Number (no) | US-423 |
| Page | pp.pp.17-20(US), |
| #Pages | 4 |
| Date of Issue | 2016-01-21 (US) |