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Electrothermal flow in dielectrophoresis of single-walled carbon nanotubes

机译:单壁碳纳米管介电电泳中的电热流

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摘要

We theoretically investigate the impact of the electrothermal flow on the dielectrophoretic separation of single-walled carbon nanotubes (SWNTs). The electrothermal flow is observed to control the motions of semiconducting SWNTs in a sizable domain near the electrodes under typical experimental conditions, therefore helping the dielectrophoretic force to attract semiconducting SWNTs in a broader range. Moreover, with the increase of the surfactant concentration, the electrothermal flow effect is enhanced, and with the change of frequency, the pattern of the electrothermal flow changes. It is shown that under some typical experimental conditions of dielectrophoretic separation of SWNTs, the electrothermal flow is a dominating factor in determining the motion of SWNTs.
机译:我们从理论上研究电热流对单壁碳纳米管(SWNTs)的介电泳分离的影响。在典型的实验条件下,观察到电热流可控制电极附近较大域中的半导电单壁碳纳米管的运动,因此有助于介电泳力在更宽的范围内吸引半导电的单壁碳纳米管。而且,随着表面活性剂浓度的增加,电热流动效果增强,并且随着频率的变化,电热流动的模式改变。结果表明,在单壁碳纳米管介电电泳分离的一些典型实验条件下,电热流是决定单壁碳纳米管运动的主要因素。

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