Inhibition of wave-driven two-dimensional turbulence by viscoelastic films of proteins

Date

2015

Authors

Francois, Nicolas
Xia, Hua
Punzmann, Horst
Combriat, Thomas
Shats, Michael

Journal Title

Journal ISSN

Volume Title

Publisher

American Physical Society

Abstract

To model waves, surface flows, and particle dispersion at the air-water interface one needs to know the essential mechanisms affecting the fluid motion at the surface. We show that a thin film (less than 10-nm thick) of adsorbed protein dramatically affects two-dimensional turbulence generated by Faraday waves at the fluid surface. Extremely low concentrations (≈1 ppm) of soluble proteins form a strong viscoelastic layer which suppresses turbulent diffusion at the surface, changes wave patterns, and shows strong resilience to the wave-induced droplet generation. Surface shear properties of the film play a key role in this phenomenon by inhibiting the creation of vorticity at the surface. The addition of surfactants, on the other hand, destroys the nanolayer and restores the fluid mobility.

Description

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Citation

Source

Physical Review E-Statistical, Nonlinear and Soft Matter Physics

Type

Journal article

Book Title

Entity type

Access Statement

Open Access

License Rights

DOI

10.1103/PhysRevE.92.023027

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