Issue 6, 2005

Flow-based and sieving matrix-free DNA differentiation by a miniaturized field flow fractionation device

Abstract

DNA separation is typically done by gel electrophoresis based on its charge property. In our previous work, we reported that dielectrophoresis could be used to manipulate polystyrene nanoparticles' motion by using a miniaturized electrical field flow fractionation device (μ-EFFF) with a segmented electrode operated under a pulsed voltage (PV). In this work, we report the manipulation and separation of DNA molecules using the μ-EFFF. DNA motion was in situ visualized inside the device. Results revealed that dielectrophoresis governed DNA motion, which was strongly correlated with the pulse frequency but not the duty cycle of a PV. A longer retention time of DNA molecules was measured under a PV. The retention time increased with the length of DNA molecules. As the μ-EFFF is flow-based and sieving-matrix-free, it has a potential to be applied to sample preparation in a micrototal analysis system or when fractionated molecules are needed for downstream analysis.

Graphical abstract: Flow-based and sieving matrix-free DNA differentiation by a miniaturized field flow fractionation device

Supplementary files

Article information

Article type
Technical Note
Submitted
14 Mar 2005
Accepted
24 Mar 2005
First published
15 Apr 2005

Lab Chip, 2005,5, 687-690

Flow-based and sieving matrix-free DNA differentiation by a miniaturized field flow fractionation device

A. Ieng Kin Lao and I. Hsing, Lab Chip, 2005, 5, 687 DOI: 10.1039/B503729H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements