Characteristic periodic motion of polymers in shear flow

Characteristic periodic motion of polymers in shear flow

The motion of both free and tethered polymer molecules as well as rigid Brownian rods in unbound shear flow is found to be characterized by a clear periodicity or tumbling frequency. Periodicity is shown using a combination of single molecule DNA experiments and computer simulations. In all cases, w...

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Veröffentlicht in:Physical review letters 2005-07, Vol.95 (1), p.018301.1-018301.4, Article 018301
Hauptverfasser: SCHROEDER, Charles M, TEIXEIRA, Rodrigo E, SHAQFEH, Eric S. G, CHU, Steven
Format: Artikel
Sprache:eng
Schlagworte:
Computer Simulation
Cross-disciplinary physics: materials science
rheology
DNA - chemistry
Exact sciences and technology
Material types
Models, Chemical
Periodicity
Physics
Polymers - chemistry
Rheology
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Zusammenfassung:The motion of both free and tethered polymer molecules as well as rigid Brownian rods in unbound shear flow is found to be characterized by a clear periodicity or tumbling frequency. Periodicity is shown using a combination of single molecule DNA experiments and computer simulations. In all cases, we develop scaling laws for this behavior and demonstrate that the frequency of characteristic periodic motion scales sublinearly with flow rate.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.95.018301