A selective dielectrophoretic particle separator using flat electrodes covered with vertically aligned carbon nanotubes

A selective dielectrophoretic particle separator using flat electrodes covered with vertically aligned carbon nanotubes
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使用覆盖有垂直排列的碳纳米管的扁平电极的选择性介电泳颗粒分离器

DOI:
10.1016/j.ces.2016.01.036
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发表时间:
2016
影响因子:
4.7
通讯作者:
Hajime
Hajime
中科院分区:
工程技术2区
文献类型:
--
作者:
Sano;Noriaki; Tanemori;Yuta; Tamon;Hajime

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在这篇简短的通讯中,提出了一种介电泳(DEP)颗粒分离器,其能够使用其上已经合成了碳纳米管(CNT)的平坦电极选择性地捕获极小的颗粒。CNT可以在它们的表面处诱导强DEP力,这允许直径与CNT的直径相当的极小颗粒优选地被这些电极捕获。本研究实验表明,直径约为10-20 nm的TiO 2颗粒被选择性地捕获的混合物与SiO2颗粒具有类似的直径的分离器使用碳纳米管生长在平面电极。相比之下,使用CNT生长的网状堆叠电极的常规隔膜不能表现出从相同的TiO 2-SiO2混合物的这种选择性捕获。
In this short communication, a dielectrophoretic (DEP) particle separator is proposed that is capable of selectively capturing extremely small particles, using flat electrodes onto which carbon nanotubes (CNTs) have been synthesized. CNTs can induce a strong DEP force at their surface, which allows extremely small particles, whose diameters are comparable to those of the CNTs, to be preferably captured by these electrodes. This study experimentally demonstrates that TiO2particles with diameters of approximately 10–20 nm are selectively captured from a mixture with SiO2particles with similar diameters by the separator using CNTs grown on the flat electrodes. For comparison, a conventional separator using CNT-grown mesh-stacked electrodes can not exhibit such selective capture from the same TiO2–SiO2mixture.
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