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

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{sup 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.

Authors:
 [1];  [1];  [2]
  1. Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam (Germany)
  2. (Germany)
Publication Date:
OSTI Identifier:
22597989
Resource Type:
Journal Article
Resource Relation:
Journal Name: Review of Scientific Instruments; Journal Volume: 87; Journal Issue: 6; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; APPROXIMATIONS; ASPECT RATIO; CHEMICAL COMPOSITION; COMPARATIVE EVALUATIONS; CONVECTION; FILMS; HEIGHT; LIQUIDS; STABILITY; STATISTICS; SURFACE FORCES; SURFACES; TEMPERATURE RANGE 0013-0065 K; THICKNESS; TWO-DIMENSIONAL CALCULATIONS; WIDTH

Citation Formats

Winkler, Michael, Abel, Markus, and Ambrosys GmbH, 14473 Potsdam. Optimized setup for two-dimensional convection experiments in thin liquid films. United States: N. p., 2016. Web. doi:10.1063/1.4950871.
Winkler, Michael, Abel, Markus, & Ambrosys GmbH, 14473 Potsdam. Optimized setup for two-dimensional convection experiments in thin liquid films. United States. doi:10.1063/1.4950871.
Winkler, Michael, Abel, Markus, and Ambrosys GmbH, 14473 Potsdam. Wed . "Optimized setup for two-dimensional convection experiments in thin liquid films". United States. doi:10.1063/1.4950871.
@article{osti_22597989,
title = {Optimized setup for two-dimensional convection experiments in thin liquid films},
author = {Winkler, Michael and Abel, Markus and Ambrosys GmbH, 14473 Potsdam},
abstractNote = {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{sup 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.},
doi = {10.1063/1.4950871},
journal = {Review of Scientific Instruments},
number = 6,
volume = 87,
place = {United States},
year = {Wed Jun 15 00:00:00 EDT 2016},
month = {Wed Jun 15 00:00:00 EDT 2016}
}