| Issue |
Europhys. Lett.
Volume 36, Number 6, November III 1996
|
|
|---|---|---|
| Page(s) | 413 - 418 | |
| Section | Atomic, molecular and optical physics | |
| DOI | https://doi.org/10.1209/epl/i1996-00244-6 | |
| Published online | 01 September 2002 | |
Evidence for the universal scaling behaviour of a freely relaxing DNA molecule
1
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
Received:
5
February
1996
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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