王小冲,安立宝,徐玉坤,龚亮

• 1:华北理工大学机械工程学院

摘要(Abstract)：

介电泳微流控分离碳纳米管是利用在外加特定频率非均匀交变电场的流动介电液中,金属型和半导体型碳纳米管由于自身电学性能不同受到不同介电泳力,进而向不同方向运动实现分离。建立了分离碳纳米管的介电泳数学模型和微流控分离通道及电极几何模型,并对分离过程进行了仿真研究。依据碳纳米管及介电液的电导率和介电常数,确定分离所用的电场频率为1010Hz,由此获得了分离通道内的电场、流场分布和碳纳米管分离运动轨迹。通过研究入口流速和电压变化对分离结果的影响,得出了使碳纳米管成功分离的入口流速和电压的合理参数组合,可指导碳纳米管实际分离过程以缩短分离时间,有利于推进基于单一电学特性碳纳米管在微纳器件中的应用进程。

关键词(KeyWords)： 介电泳;微流控;碳纳米管;分离;仿真

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51172062;51472074);; 河北省引进海外高层次人才“百人计划”资助(E2012100005)

作者(Author): 王小冲,安立宝,徐玉坤,龚亮

DOI: 10.13289/j.issn.1009-6264.2015.s2.038

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