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  • Enhanced electrophoretic DNA separation in photonic crystal fiber

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    Author(s)
    Sun, Yi
    Nguyen, Nam-Trung
    Kwok, Yien Chian
    Griffith University Author(s)
    Nguyen, Nam-Trung
    Year published
    2009
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    Abstract
    Joule heating generated by the electrical current in capillary electrophoresis leads to a temperature gradient along the separation channel and consequently affects the separation quality. We describe a method of reducing the Joule heating effect by incorporating photonic crystal fiber into a micro capillary electrophoresis chip. The photonic crystal fiber consists of a bundle of extremely narrow hollow channels, which ideally work as separation columns. Electrophoretic separation of DNA fragments was simultaneously but independently carried out in 54 narrow capillaries with a diameter of 3.7?孠each. The capillary bundle ...
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    Joule heating generated by the electrical current in capillary electrophoresis leads to a temperature gradient along the separation channel and consequently affects the separation quality. We describe a method of reducing the Joule heating effect by incorporating photonic crystal fiber into a micro capillary electrophoresis chip. The photonic crystal fiber consists of a bundle of extremely narrow hollow channels, which ideally work as separation columns. Electrophoretic separation of DNA fragments was simultaneously but independently carried out in 54 narrow capillaries with a diameter of 3.7?孠each. The capillary bundle offers more efficient heat dissipation owing to the high surface-to-volume ratio. Under the same electrical field strength, notable improvement in resolution was obtained in the capillary bundle chip.
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    Journal Title
    Analytical and Bioanalytical Chemistry
    Volume
    394
    Issue
    6
    DOI
    https://doi.org/10.1007/s00216-009-2833-6
    Copyright Statement
    © 2009 Springer Berlin / Heidelberg. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. The original publication is available at www.springerlink.com
    Subject
    Chemical sciences
    Biological sciences
    Other biological sciences not elsewhere classified
    Engineering
    Publication URI
    http://hdl.handle.net/10072/62113
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    • Journal articles

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