期刊
PHYSICAL REVIEW LETTERS
卷 93, 期 5, 页码 -出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.93.058102
关键词
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We study the dynamics of single DNA molecules driven by an electric field into a stationary obstacle. These collisions are broadly classified as hook and roll-off events. We show that obstacle-induced electric field gradients stretch impacting DNA and thus greatly influence the hooking probability. Consequently, in addition to collision geometry, determination of the hooking probability depends on the Deborah number (De) for 0.5<40. Individual DNA impact dynamics are highly configuration sensitive, characteristic of polymers in elongational flows and fields.
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