Volume 36, Number 6, November III 1996
|Page(s)||413 - 418|
|Section||Atomic, molecular and optical physics|
|Published online||01 September 2002|
Evidence for the universal scaling behaviour of a freely relaxing DNA molecule
Laboratoire PCC (UMR CNRS 168), Institut Curie, Section de
Recherche, 11 rue P. et M. Curie, 75231 Paris, France
2 LUDFC, Institut de Physique - 3, rue de l'Université, 67084 Strasbourg, France
3 Ecole Normale Supérieure, Laboratoire de Genetique Moleculaire, 46, rue d'Ulm, 75230 Paris, France
Accepted: 10 October 1996
Relaxation measurements on a fluorescently labelled free DNA molecule after stretching by a Poiseuille flow in a capillary vessel reveal universal scaling features: at intermediate times the scaling exponent of the decay law for the molecule length as a function of time is found to be . This law is in agreement with the prediction of the Brochard-Wyart “stem and flower” model for the relaxation of a stretched polymer chain.
PACS: 36.20.-r – Macromolecules and polymer molecules / 87.15.-v – Molecular biophysics
© EDP Sciences, 1996
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