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| Presentation | 2009-09-29 16:35 Study on disaggregation and surfece modification of nano-meter size diamond particles by ultrasound exposure -- Relationships between US exposure time and particle distributions, zeta potential and effect of avoidance from acoustic streaming -- Shinichi Takeuchi (Toin Univ. of Yokohama.), Takeyoshi Uchida (AIST), Takahiro Aoki, Norimichi Kawashima (Toin Univ. of Yokohama.)  US2009-46 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Nano-meter-sized diamond particle abrasive agents with tiny and uniform diameter are required for precise polishing of ultra-miniature hard disks with high recording density and their magnetic heads. Nano-meter-sized diamond particles are aggregated immediately after manufacturing. Aggregated diamond particles are disaggregated by using shock wave generated together with acoustic cavitation by ultrasound exposure. Furthermore, the surfaces of disaggregated diamond particles are modified for avoidance from reaggregation by using activated oxygen species like hydroxyl radicals generated together with acoustic cavitation We estimates the surface modification of diamond particles by measurement of zeta potential on their surfaces. We report the investigated results on the relationship between ultrasound exposure time and particle distributions, zeta potential and effect of avoidance from acoustic streaming generated in a water tank of our ultrasound exposure system. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Nano-meter-sized diamond particles / disaggregation / surface modification / size distribution / zeta potential / acoustic streaming / / | |
| Reference Info. | IEICE Tech. Rep., vol. 109, no. 213, US2009-46, pp. 47-52, Sept. 2009. | |
| Paper # | US2009-46 | |
| Date of Issue | 2009-09-22 (US) | |
| ISSN | Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | US2009-46 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2009-09-29 - 2009-09-30 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Noboribetsu Grand Hotel |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Paper Information | |
| Registration To | US |
| Conference Code | 2009-09-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Study on disaggregation and surfece modification of nano-meter size diamond particles by ultrasound exposure |
| Sub Title (in English) | Relationships between US exposure time and particle distributions, zeta potential and effect of avoidance from acoustic streaming |
| Keyword(1) | Nano-meter-sized diamond particles |
| Keyword(2) | disaggregation |
| Keyword(3) | surface modification |
| Keyword(4) | size distribution |
| Keyword(5) | zeta potential |
| Keyword(6) | acoustic streaming |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Shinichi Takeuchi |
| 1st Author's Affiliation | Toin University of Yokohama (Toin Univ. of Yokohama.) |
| 2nd Author's Name | Takeyoshi Uchida |
| 2nd Author's Affiliation | National Institute of Advanced Industrial Science and Technology (AIST) |
| 3rd Author's Name | Takahiro Aoki |
| 3rd Author's Affiliation | Toin University of Yokohama (Toin Univ. of Yokohama.) |
| 4th Author's Name | Norimichi Kawashima |
| 4th Author's Affiliation | Toin University of Yokohama (Toin Univ. of Yokohama.) |
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| Speaker | Author-1 |
| Date Time | 2009-09-29 16:35:00 |
| Presentation Time | 25 minutes |
| Registration for | US |
| Paper # | US2009-46 |
| Volume (vol) | vol.109 |
| Number (no) | no.213 |
| Page | pp.47-52 |
| #Pages | 6 |
| Date of Issue | 2009-09-22 (US) |
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