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| Presentation | 2011-09-27 09:00 Ultrasonic atomization using a vibrating small gap Ryoichi Isago, Kenta Tokumitsu, Daisuke Koyama, Kentaro Nakamura (Tokyo Tech.)  US2011-53 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Ultrasonic atomization has been utilized as an inhaler and a humidifier since it can generate mist with particle size of several $\muup$m or around 10~$\muup$m without elevating temperature. However, it is difficult to produce a large amount of fine mist, because there is an inverse proportionality between the driving frequency and the particle size. High frequency transducer of MHz region can produce fine mist, but its radiation surface is too small to process a large volume. Until now, various studies have been performed for increasing the volume with keeping the samll particle size. In this report, we investigated an ultrasonic atomization principle using a small gap between a vibrating surface and a rigid wall. The particle size in the method is determined mainly by the gap and is smaller than that in the conventional dependence on the driving frequency. A relationship between the gap and the particle size is experimentally studied in the prototype. A large volume of small particles of around 10~$\muup$m of diameter can be produced by the vibrating gap even at lower frequencies in several 10~kHz. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Ultrasonic atomization / Small gap / Squeeze film / Ring vibrator / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 111, no. 215, US2011-53, pp. 37-42, Sept. 2011. | |
| Paper # | US2011-53 | |
| Date of Issue | 2011-09-19 (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 | US2011-53 |
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| Conference Information | |
| Committee | US |
| Conference Date | 2011-09-26 - 2011-09-27 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tohoku Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | General |
| Paper Information | |
| Registration To | US |
| Conference Code | 2011-09-US |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Ultrasonic atomization using a vibrating small gap |
| Sub Title (in English) | |
| Keyword(1) | Ultrasonic atomization |
| Keyword(2) | Small gap |
| Keyword(3) | Squeeze film |
| Keyword(4) | Ring vibrator |
| Keyword(5) | |
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| 1st Author's Name | Ryoichi Isago |
| 1st Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech.) |
| 2nd Author's Name | Kenta Tokumitsu |
| 2nd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech.) |
| 3rd Author's Name | Daisuke Koyama |
| 3rd Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech.) |
| 4th Author's Name | Kentaro Nakamura |
| 4th Author's Affiliation | Tokyo Institute of Technology (Tokyo Tech.) |
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| Speaker | Author-1 |
| Date Time | 2011-09-27 09:00:00 |
| Presentation Time | 25 minutes |
| Registration for | US |
| Paper # | US2011-53 |
| Volume (vol) | vol.111 |
| Number (no) | no.215 |
| Page | pp.37-42 |
| #Pages | 6 |
| Date of Issue | 2011-09-19 (US) |
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