A Bi-Directional Acoustic Micropump Driven by Oscillating Sharp-Edge Structures
This paper proposes a bi-directional acoustic micropump driven by two groups of oscillating sharp-edge structures: one group of sharp-edge structures with inclined angles of 60° and a width of 40 μm, and another group with inclined angles of 45° and a width of 25 μm. One of the groups of sharp-edge...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/14/4/860 |
| _version_ | 1797604256694403072 |
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| author | Bendong Liu Meimei Qiao Shaohua Zhang Jiahui Yang |
| author_facet | Bendong Liu Meimei Qiao Shaohua Zhang Jiahui Yang |
| author_sort | Bendong Liu |
| collection | DOAJ |
| description | This paper proposes a bi-directional acoustic micropump driven by two groups of oscillating sharp-edge structures: one group of sharp-edge structures with inclined angles of 60° and a width of 40 μm, and another group with inclined angles of 45° and a width of 25 μm. One of the groups of sharp-edge structures will vibrate under the excitation of the acoustic wave generated with a piezoelectric transducer at its corresponding resonant frequency. When one group of sharp-edge structures vibrates, the microfluid flows from left to right. When the other group of sharp-edge structures vibrates, the microfluid flows in the opposite direction. Some gaps are designed between the sharp-edge structures and the upper surface and the bottom surface of the microchannels, which can reduce the damping between the sharp-edge structures and the microchannels. Actuated with an acoustic wave of a different frequency, the microfluid in the microchannel can be driven bidirectionally by the inclined sharp-edge structures. The experiments show that the acoustic micropump, driven by oscillating sharp-edge structures, can produce a stable flow rate of up to 125 μm/s from left to right, when the transducer was activated at 20.0 kHz. When the transducer was activated at 12.8 kHz, the acoustic micropump can produce a stable flow rate of up to 85 μm/s from right to left. This bi-directional acoustic micropump, driven by oscillating sharp-edge structures, is easy to operate and shows great potential in various applications. |
| first_indexed | 2024-03-11T04:43:45Z |
| format | Article |
| id | doaj.art-9e580215cfab4a44aa5822d4eca1eee5 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-11T04:43:45Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-9e580215cfab4a44aa5822d4eca1eee52023-11-17T20:30:25ZengMDPI AGMicromachines2072-666X2023-04-0114486010.3390/mi14040860A Bi-Directional Acoustic Micropump Driven by Oscillating Sharp-Edge StructuresBendong Liu0Meimei Qiao1Shaohua Zhang2Jiahui Yang3Faculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaFaculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaFaculty of Materials and Manufacturing, Beijing University of Technology, Beijing 100124, ChinaBeijing Vocational College of Agriculture, Beijing 102208, ChinaThis paper proposes a bi-directional acoustic micropump driven by two groups of oscillating sharp-edge structures: one group of sharp-edge structures with inclined angles of 60° and a width of 40 μm, and another group with inclined angles of 45° and a width of 25 μm. One of the groups of sharp-edge structures will vibrate under the excitation of the acoustic wave generated with a piezoelectric transducer at its corresponding resonant frequency. When one group of sharp-edge structures vibrates, the microfluid flows from left to right. When the other group of sharp-edge structures vibrates, the microfluid flows in the opposite direction. Some gaps are designed between the sharp-edge structures and the upper surface and the bottom surface of the microchannels, which can reduce the damping between the sharp-edge structures and the microchannels. Actuated with an acoustic wave of a different frequency, the microfluid in the microchannel can be driven bidirectionally by the inclined sharp-edge structures. The experiments show that the acoustic micropump, driven by oscillating sharp-edge structures, can produce a stable flow rate of up to 125 μm/s from left to right, when the transducer was activated at 20.0 kHz. When the transducer was activated at 12.8 kHz, the acoustic micropump can produce a stable flow rate of up to 85 μm/s from right to left. This bi-directional acoustic micropump, driven by oscillating sharp-edge structures, is easy to operate and shows great potential in various applications.https://www.mdpi.com/2072-666X/14/4/860acoustic wavesharp-edge structurebi-directional pumpmicropump |
| spellingShingle | Bendong Liu Meimei Qiao Shaohua Zhang Jiahui Yang A Bi-Directional Acoustic Micropump Driven by Oscillating Sharp-Edge Structures Micromachines acoustic wave sharp-edge structure bi-directional pump micropump |
| title | A Bi-Directional Acoustic Micropump Driven by Oscillating Sharp-Edge Structures |
| title_full | A Bi-Directional Acoustic Micropump Driven by Oscillating Sharp-Edge Structures |
| title_fullStr | A Bi-Directional Acoustic Micropump Driven by Oscillating Sharp-Edge Structures |
| title_full_unstemmed | A Bi-Directional Acoustic Micropump Driven by Oscillating Sharp-Edge Structures |
| title_short | A Bi-Directional Acoustic Micropump Driven by Oscillating Sharp-Edge Structures |
| title_sort | bi directional acoustic micropump driven by oscillating sharp edge structures |
| topic | acoustic wave sharp-edge structure bi-directional pump micropump |
| url | https://www.mdpi.com/2072-666X/14/4/860 |
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