DNA electrophoresis on a flat surface.

DNA electrophoresis on a flat surface.
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在平坦表面上进行 DNA 电泳。

DOI:
10.1103/physrevlett.85.5651
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发表时间:
2000
期刊:
Physical review letters.
影响因子:
--
通讯作者:
Chu,B
Chu,B
中科院分区:
--
文献类型:
--
作者:
Pernodet,N;Samuilov,V;Shin,K;Sokolov,J;Rafailovich,MH;Gersappe,D;Chu,B

文献摘要

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相似文献

我们报告了一种新的方法进行DNA电泳。使用实验研究和分子动力学模拟,我们表明,一个完美的平面硅晶片,没有任何表面特征,可以用来在自由溶液中fractionate DNA。我们确定,一个平面的能力,以分离DNA分子的结果从表面和吸附的DNA片段之间的局部摩擦。我们通过用硅烷单层膜涂覆Si表面来控制这种摩擦,并表明有可能系统地改变可以分离的DNA的尺寸范围。
We report a new approach for performing DNA electrophoresis. Using experimental studies and molecular dynamics simulations, we show that a perfectly flat silicon wafer, without any surface features, can be used to fractionate DNA in free solution. We determine that the ability of a flat surface to separate DNA molecules results from the local friction between the surface and the adsorbed DNA segments. We control this friction by coating the Si surface with silane monolayer films and show that it is possible to systematically change the size range of DNA that can be separated.