| 磁性纳米颗粒对微槽道液体流动的混合增强作用 |
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| 引用本文： | 王化峰,程万,李战华.磁性纳米颗粒对微槽道液体流动的混合增强作用[J].实验流体力学,2007,21(1):54-58. |
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| 作者姓名： | 王化峰 程万 李战华 |
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| 作者单位： | 1. 中国科学院力学研究所LNM实验室,北京,100080
2. 中国科学技术大学力学和机械工程系,合肥,230026 |
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| 基金项目： | 国家自然科学基金，中国科学院知识创新工程项目 |
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| 摘 要： | 为了改进微流控芯片中液体混合效率,尝试在一种液体中加入磁性纳米颗粒,增强与另外一种液体混合.在外加磁场作用下,对Y型微槽道中磁性与非磁性液体流动混合进行了实验观测,所需混合长度较无磁场时缩短了约2个数量级.利用CFD软件进行数值模拟,验证了外磁场作用下纳米磁性液体对流动混合有着明显的强化作用.
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| 关 键 词： | 微流体 微芯片 混合增强 纳米颗粒 磁驱动 |
| 文章编号： | 1672-9897（2007）01-0054-05 |
| 收稿时间： | 2005-09-19 |
| 修稿时间： | 2006-10-09 |
The enhancing effect of magnetic nano-particles on the liquid's mixing in microchannels |
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| WANG Hua-feng,CHENG Wan,LI Zhan-hua.The enhancing effect of magnetic nano-particles on the liquid''''s mixing in microchannels[J].Experiments and Measur in Fluid Mechanics,2007,21(1):54-58. |
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| Authors: | WANG Hua-feng CHENG Wan LI Zhan-hua |
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| Institution: | 1. State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, GAS, Beijing 100080, China; 2. Department of Modem Mechanics, University of Science and Technology of China, Hefei 230027, China |
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| Abstract: | On behalf of the improvement of the liquids mixing in microchips,a new method for enhancing the mixing between two liquids was tested by using magnetic particles into one kind of liquid.The mixing process of two liquids in Y-type microchannel was observed,the mixing length under the stationary magnetic field could be decreased to 2 orders of magnitude comparing with the case of no magnetic field.The results of the numerical simulation indicate also that the mixing is enhanced obviously. |
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| Keywords: | microfluidic microchip enhancing mixing nano-particles magneto-driven |
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