Asymmetrical Induced Charge Electroosmotic Flow on a Herringbone Floating Electrode and Its Application in a Micromixer
Enhancing mixing is of significant importance in microfluidic devices characterized by laminar flows and low Reynolds numbers. An asymmetrical induced charge electroosmotic (ICEO) vortex pair generated on the herringbone floating electrode can disturb the interface of two-phase fluids and deliver th...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-08-01
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| Series: | Micromachines |
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| Online Access: | http://www.mdpi.com/2072-666X/9/8/391 |
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| author | Qingming Hu Jianhua Guo Zhongliang Cao Hongyuan Jiang |
| author_facet | Qingming Hu Jianhua Guo Zhongliang Cao Hongyuan Jiang |
| author_sort | Qingming Hu |
| collection | DOAJ |
| description | Enhancing mixing is of significant importance in microfluidic devices characterized by laminar flows and low Reynolds numbers. An asymmetrical induced charge electroosmotic (ICEO) vortex pair generated on the herringbone floating electrode can disturb the interface of two-phase fluids and deliver the fluid transversely, which could be exploited to accomplish fluid mixing between two neighbouring fluids in a microscale system. Herein we present a micromixer based on an asymmetrical ICEO flow induced above the herringbone floating electrode array surface. We investigate the average transverse ICEO slip velocity on the Ridge/Vee/herringbone floating electrode and find that the microvortex generated on the herringbone electrode surface has good potential for mixing the miscible liquids in microfluidic systems. In addition, we explore the effect of applied frequencies and bulk conductivity on the slip velocity above the herringbone floating electrode surface. The high dependence of mixing performance on the floating electrode pair numbers is analysed simultaneously. Finally, we investigate systematically voltage intensity, applied frequencies, inlet fluid velocity and liquid conductivity on the mixing performance of the proposed device. The microfluidic micromixer put forward herein offers great opportunity for fluid mixing in the field of micro total analysis systems. |
| first_indexed | 2024-12-14T18:39:35Z |
| format | Article |
| id | doaj.art-63cf8c844fcc4ce4a0497fedceb31a4f |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-12-14T18:39:35Z |
| publishDate | 2018-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-63cf8c844fcc4ce4a0497fedceb31a4f2022-12-21T22:51:31ZengMDPI AGMicromachines2072-666X2018-08-019839110.3390/mi9080391mi9080391Asymmetrical Induced Charge Electroosmotic Flow on a Herringbone Floating Electrode and Its Application in a MicromixerQingming Hu0Jianhua Guo1Zhongliang Cao2Hongyuan Jiang3School of Mechatronics Engineering, Qiqihar University, Wenhua Street 42, Qiqihar 161006, ChinaSchool of Mechatronics Engineering, Qiqihar University, Wenhua Street 42, Qiqihar 161006, ChinaSchool of Mechatronics Engineering, Qiqihar University, Wenhua Street 42, Qiqihar 161006, ChinaSchool of Mechatronics Engineering, Harbin Institute of Technology, West Da-zhi Street 92, Harbin 150001, ChinaEnhancing mixing is of significant importance in microfluidic devices characterized by laminar flows and low Reynolds numbers. An asymmetrical induced charge electroosmotic (ICEO) vortex pair generated on the herringbone floating electrode can disturb the interface of two-phase fluids and deliver the fluid transversely, which could be exploited to accomplish fluid mixing between two neighbouring fluids in a microscale system. Herein we present a micromixer based on an asymmetrical ICEO flow induced above the herringbone floating electrode array surface. We investigate the average transverse ICEO slip velocity on the Ridge/Vee/herringbone floating electrode and find that the microvortex generated on the herringbone electrode surface has good potential for mixing the miscible liquids in microfluidic systems. In addition, we explore the effect of applied frequencies and bulk conductivity on the slip velocity above the herringbone floating electrode surface. The high dependence of mixing performance on the floating electrode pair numbers is analysed simultaneously. Finally, we investigate systematically voltage intensity, applied frequencies, inlet fluid velocity and liquid conductivity on the mixing performance of the proposed device. The microfluidic micromixer put forward herein offers great opportunity for fluid mixing in the field of micro total analysis systems.http://www.mdpi.com/2072-666X/9/8/391asymmetrical induced charge electroosmoticslip velocitymicromixerherringbone floating electrode |
| spellingShingle | Qingming Hu Jianhua Guo Zhongliang Cao Hongyuan Jiang Asymmetrical Induced Charge Electroosmotic Flow on a Herringbone Floating Electrode and Its Application in a Micromixer Micromachines asymmetrical induced charge electroosmotic slip velocity micromixer herringbone floating electrode |
| title | Asymmetrical Induced Charge Electroosmotic Flow on a Herringbone Floating Electrode and Its Application in a Micromixer |
| title_full | Asymmetrical Induced Charge Electroosmotic Flow on a Herringbone Floating Electrode and Its Application in a Micromixer |
| title_fullStr | Asymmetrical Induced Charge Electroosmotic Flow on a Herringbone Floating Electrode and Its Application in a Micromixer |
| title_full_unstemmed | Asymmetrical Induced Charge Electroosmotic Flow on a Herringbone Floating Electrode and Its Application in a Micromixer |
| title_short | Asymmetrical Induced Charge Electroosmotic Flow on a Herringbone Floating Electrode and Its Application in a Micromixer |
| title_sort | asymmetrical induced charge electroosmotic flow on a herringbone floating electrode and its application in a micromixer |
| topic | asymmetrical induced charge electroosmotic slip velocity micromixer herringbone floating electrode |
| url | http://www.mdpi.com/2072-666X/9/8/391 |
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