NDLI: Optimized setup for two-dimensional convection experiments in thin liquid films.

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Optimized setup for two-dimensional convection experiments in thin liquid films.

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Optimized setup for two-dimensional convection experiments in thin liquid films.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Winkler, Michael Abel, Markus
Description	Country affiliation: Germany Author Affiliation: Winkler M ( Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany.); Abel M ( Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany.)
Abstract	We present a novel experimental setup to investigate two-dimensional thermal convection in a freestanding thin liquid film. Such films can be produced in a controlled way on the scale of 5-1000 nm. Our primary goal is to investigate convection patterns and the statistics of reversals in Rayleigh-Bénard convection with varying aspect ratio. Additionally, questions regarding the physics of liquid films under controlled conditions can be investigated, like surface forces, or stability under varying thermodynamical parameters. The film is suspended in a frame which can be adjusted in height and width to span an aspect ratio range of Γ = 0.16-10. The top and bottom frame elements can be set to specific temperature within T = 15 °C to 55 °C. A thickness to area ratio of approximately 10(8) enables only two-dimensional fluid motion in the time scales relevant for turbulent motion. The chemical composition of the film is well-defined and optimized for film stability and reproducibility and in combination with carefully controlled ambient parameters allows the comparison to existing experimental and numerical data.
ISSN	00346748
Issue Number	6
Journal	Review of Scientific Instruments
Volume Number	87
e-ISSN	10897623
Language	English
Publisher	American Institute of Physics
Publisher Date	2016-06-01
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Discipline Physics Discipline Chemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Instrumentation

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