Mosaics and Two-Dimensional Foams of Freely Suspended Soap Films

Langmuir ◽  
2001 ◽  
Vol 17 (21) ◽  
pp. 6736-6739 ◽  
Author(s):  
J. Mathé ◽  
J.-M. di Meglio ◽  
B. Tinland
Keyword(s):  
Two Dimensional ◽  
Soap Films ◽  
Freely Suspended

The Onset of Two-Dimensional Grid Generated Turbulence in Flowing Soap Films

1996 ◽  
Vol 8 (9) ◽  
pp. S7-S7 ◽  
Author(s):  
Maarten A. Rutgers ◽  
Xiao-lun Wu ◽  
Walter I. Goldburg
Keyword(s):  
Two Dimensional ◽  
Soap Films

Flowing soap films: a laboratory for studying two-dimensional hydrodynamics

1998 ◽  
Vol 254 (1-2) ◽  
pp. 231-247 ◽  
Author(s):  
W.I. Goldburg ◽  
A. Belmonte ◽  
X.L. Wu ◽  
I. Zusman
Keyword(s):  
Two Dimensional ◽  
Soap Films

Structure and dynamics of a two-dimensional colloid of liquid droplets

Soft Matter ◽  
2019 ◽  
Vol 15 (40) ◽  
pp. 8156-8163 ◽  
Author(s):  
Christoph Klopp ◽  
Torsten Trittel ◽  
Alexey Eremin ◽  
Kirsten Harth ◽  
Ralf Stannarius ◽  
...  
Keyword(s):  
Two Dimensional ◽  
Liquid Droplets ◽  
Colloidal Structure ◽  
Structure And Dynamics ◽  
Freely Suspended

Droplets in thin freely suspended smectic films interact repulsively with each other and form a colloidal structure with 2D hydrodynamics.

scholarly journals The dynamics of a viscous soap film with soluble surfactant

2001 ◽  
Vol 442 ◽  
pp. 387-409 ◽  
Author(s):  
JEAN-MARC CHOMAZ
Keyword(s):  
Film Thickness ◽  
Elastic Wave ◽  
Surfactant Concentration ◽  
Stokes Equations ◽  
Film Surface ◽  
Soap Film ◽  
Fluid Viscosity ◽  
Two Dimensional ◽  
Leading Order ◽  
Soap Films

Nearly two decades ago, Couder (1981) and Gharib & Derango (1989) used soap films to perform classical hydrodynamics experiments on two-dimensional flows. Recently soap films have received renewed interest and experimental investigations published in the past few years call for a proper analysis of soap film dynamics. In the present paper, we derive the leading-order approximation for the dynamics of a flat soap film under the sole assumption that the typical length scale of the flow parallel to the film surface is large compared to the film thickness. The evolution equations governing the leading-order film thickness, two-dimensional velocities (locally averaged across the film thickness), average surfactant concentration in the interstitial liquid, and surface surfactant concentration are given and compared to similar results from the literature. Then we show that a sufficient condition for the film velocity distribution to comply with the Navier–Stokes equations is that the typical flow velocity be small compared to the Marangoni elastic wave velocity. In that case the thickness variations are slaved to the velocity field in a very specific way that seems consistent with recent experimental observations. When fluid velocities are of the order of the elastic wave speed, we show that the dynamics are generally very specific to a soap film except if the fluid viscosity and the surfactant solubility are neglected. In that case, the compressible Euler equations are recovered and the soap film behaves like a two-dimensional gas with an unusual ratio of specific heat capacities equal to unity.

scholarly journals 1103 Frequency fluctuations of two-dimensional turbulence in flowing soap films

2012 ◽  
Vol 2012 (0) ◽  
pp. 413-414
Author(s):  
Ruri HIDEMA ◽  
Shion HISAMATSU ◽  
Hiroshi SUZUKI ◽  
Yoshiyuki KOMODA
Keyword(s):  
Two Dimensional ◽  
Soap Films ◽  
Frequency Fluctuations

Chiral Symmetry Breaking and Pattern Formation in Two-Dimensional Films

1992 ◽  
Vol 292 ◽  
Author(s):  
Jonathan V. Selinger ◽  
Zhen-Gang Wang ◽  
Robijn F. Bruinsma
Keyword(s):  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Landau Theory ◽  
Chiral Symmetry Breaking ◽  
Orientational Order ◽  
Langmuir Monolayers ◽  
Spontaneous Breaking ◽  
Racemic Mixture ◽  
Two Dimensional ◽  
Freely Suspended

AbstractThin films of organic molecules, such as Langmuir monolayers and freely suspended smectic films, can exhibit a spontaneous breaking of chiral symmetry. This chiral symmetry breaking can occur through at least three possible mechanisms: (1) the relation between tilt order and bond-orientational order in a tilted hexatic phase, (2) a special packing of non-chiral molecules on a two-dimensional surface, and (3) phase separation of a racemic mixture. Because the chiral order parameter is coupled to variations in the direction of molecular tilt, chiral symmetry breaking leads to the formation of patterns in the tilt direction with one-dimensional or two-dimensional order. Using a Landau theory, we investigate these patterns and predict the critical behavior near the chiral symmetry breaking transition.

Two-Dimensional Modelling of a Freely Suspended Smectic Film

2009 ◽  
Vol 512 (1) ◽  
pp. 124/[1970]-135/[1981]
Author(s):  
G. McKay ◽  
H. Millar
Keyword(s):  
Two Dimensional ◽  
Freely Suspended

Soap films as two-dimensional classical fluids

1990 ◽  
Vol 41 (4) ◽  
pp. 2243-2245 ◽  
Author(s):  
J. M. Chomaz ◽  
B. Cathalau
Keyword(s):  
Two Dimensional ◽  
Soap Films ◽  
Classical Fluids
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