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  Onset of area-dependent dissipation in droplet spreading

Ilton, M., Bäumchen, O., & Dalnoki-Veress, K. (2015). Onset of area-dependent dissipation in droplet spreading. Physical Review Letters, 115(4): 046103. doi:10.1103/PhysRevLett.115.046103.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-5F02-2 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-C06C-5
Genre: Journal Article

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 Creators:
Ilton, Mark, Author
Bäumchen, Oliver1, Author              
Dalnoki-Veress, Kari, Author
Affiliations:
1Group Dynamics of fluid and biological interfaces, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063300              

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 Abstract: We probe the viscous relaxation of structured liquid droplets in the partial wetting regime using a diblock copolymer system. The relaxation time of the droplets is measured after a step change in temperature as a function of three tunable parameters: droplet size, equilibrium contact angle, and the viscosity of the fluid. Contrary to what is typically observed, the late-stage relaxation time does not scale with the radius of the droplet—rather, relaxation scales with the radius squared. Thus, the energy dissipation depends on the contact area of the droplet, rather than the contact line.

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Language(s): eng - English
 Dates: 2015-07-222015-07-24
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.115.046103
BibTex Citekey: ilton-prl-2015
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Title: Physical Review Letters
Source Genre: Journal
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Pages: 5 Volume / Issue: 115 (4) Sequence Number: 046103 Start / End Page: - Identifier: ISSN: 0031-9007