Dielectrophoretic mobility determination in DC insulator-based dielectrophoresis.

Dielectrophoretic mobility determination in DC insulator-based dielectrophoresis.
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基于直流绝缘体的介电体现型的介电性迁移率。

DOI:
10.1002/elps.201100034
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发表时间:
2011-09
期刊:
影响因子:
2.9
通讯作者:
Hayes, Mark A.
Hayes, Mark A.
中科院分区:
生物学3区
文献类型:
--
作者:
Weiss, Noah G.;Jones, Paul V.;Mahanti, Prasun;Chen, Kang P.;Taylor, Thomas J.;Hayes, Mark A.

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基于绝缘体的介电电泳是分离和表征颗粒的有力工具,但它受到缺乏定量表征的限制。这里,通过采用能够量化颗粒的介电泳迁移率的方法来解决该限制。利用基于条纹的测速技术,从粒子在具有恒定电场梯度的微流体通道中的运动推导出粒子的特性。从这种方法中,1 μm聚苯乙烯颗粒的介电电泳迁移率被发现是−2 ± 0.4 × 10−8 cm 4/(V2·s)。在未来,这种定量治疗将允许阐明独特的见解和合理的设计设备。
Insulator based dielectrophoresis is powerful tool for separating and charactering particles, yet it is limited by a lack of quantitative characterizations. Here this limitation is addressed by employing a method capable of quantifying the dielectrophoretic mobility of particles. Using streak-based velocimetry the particle properties are deduced from their motion in a microfluidic channel with a constant electric field gradient. From this approach the dielectrophoretic mobility of 1 μm polystyrene particles was found to be −2 ± 0.4 × 10−8 cm4/(V2·s). In the future, such quantitative treatment will allow for the elucidation of unique insights and rational design of devices.
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