What governs the fluidic behavior of water near single DNA molecules at the micro/nano scale

Details What governs the fluidic behavior of water near single DNA molecules at the micro/nano scale What governs the fluidic behavior of water near single DNA molecules at the micro/nano scale

2006-07-08

arxiv.org/abs/physics/0607079v2

Physics

Biological Physics

One latex file, 5 pages, 3 figures, one pdf file are all included in a ZIP file

Scientific paper

The fluidic behavior of water at the micro/nano scale is studied by using of single DNA molecules as a model system. Stable curved DNA patterns with spans about one micron were generated by using of water flows, and observed by Atomic Force Microscopy. By rigorously comparing the numerical simulation results with these patterns, it is suggested that the form of the macroscopic hydrodynamic equation still works quantitatively well on the fluid flows at the nanoscale. The molecular effects, however, are still apparent that the effective viscosity of the adjacent water is considerably larger than its bulk value. Our observation is also helpful to understand of the dynamics of biomolecules in solutions from nanoscale to microscale.

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