Internal dynamics of DNA probed by transient electric birefringence

Mi K. Hong, Onuttom Narayan, Raymond E. Goldstein, E. Shyamsunder, Robert H. Austin, Daniel S. Fisher, Mike Hogan

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


Experiments on the field-free transient electric birefrigence decay of dilute solutions of monodisperse DNA fragments whose length L is much larger than the persistence length Lp are reported. They reveal that the highly nonexponential decay is independent of L. We present a simple theoretical model which includes the internal rigidity of the polymer, explains the qualitative results of the measurements, and describes quantitatively the dynamics of long semiflexible polymers such as DNA, providing an accurate determination of the persistence length.

Original languageEnglish (US)
Pages (from-to)1430-1433
Number of pages4
JournalPhysical review letters
Issue number9
StatePublished - 1992

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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