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:
影响因子:
--
通讯作者:
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
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.