A two-dimensional Couette viscometer for Langmuir monolayers

1998 ◽  
Vol 69 (10) ◽  
pp. 3568-3572 ◽  
Author(s):  
R. S. Ghaskadvi ◽  
Michael Dennin
Keyword(s):  
Langmuir Monolayers ◽  
Two Dimensional ◽  
Couette Viscometer

Supramolecular Reorientation During Deposition Onto Metal Surfaces of Quasi-Two-Dimensional Langmuir Monolayers Composed of Bifunctional Amphiphilic, Twisted Perylenes

Langmuir ◽  
2021 ◽  
Vol 37 (37) ◽  
pp. 11018-11026
Author(s):  
Maximilian L. Hupfer ◽  
Robert Meyer ◽  
Tanja Deckert-Gaudig ◽  
Soumik Ghosh ◽  
Artem Skabeev ◽  
...  
Keyword(s):  
Metal Surfaces ◽  
Langmuir Monolayers ◽  
Two Dimensional

Surface shear viscosity of Gibbs and Langmuir monolayers

1999 ◽  
Vol 397 ◽  
pp. 331-349 ◽  
Author(s):  
CATHERINE BARENTIN ◽  
CHRISTOPHE YBERT ◽  
JEAN-MARC DI MEGLIO ◽  
JEAN-FRANÇOIS JOANNY
Keyword(s):  
Shear Viscosity ◽  
Sodium Dodecyl ◽  
Langmuir Monolayers ◽  
Two Dimensional ◽  
Hydrodynamic Models ◽  
Surface Shear ◽  
Hydrodynamic Calculations ◽  
Good Agreement ◽  
Surface Shear Viscosity

In this paper, we present a new two-dimensional viscometer, and the hydrodynamic calculations used to obtain the surface viscosities from the measurements. In order to interpret the experiments, performed with solutions of sodium dodecyl sulfate (SDS) and also with monolayers of insoluble surfactants, we develop various hydrodynamic models of soluble Gibbs monolayers and of incompressible Langmuir monolayers, that describe well the experimental results. In the case of SDS solutions, the calculations allow the determination of the surface shear viscosity, and its value is in good agreement with previous studies.

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.

Approaching Two-Dimensional Copolymers: Photoirradiation of Anthracene- and Diaza-Anthracene-Bearing Monomers in Langmuir Monolayers

2014 ◽  
Vol 36 (2) ◽  
pp. 151-158 ◽  
Author(s):  
Payam Payamyar ◽  
Marco Servalli ◽  
Tim Hungerland ◽  
Andri P. Schütz ◽  
Zhikun Zheng ◽  
...  
Keyword(s):  
Langmuir Monolayers ◽  
Two Dimensional
Sign in / Sign up

Export Citation Format

Share Document