Electrodeposition of a two-dimensional silver dendritic crystal under Langmuir monolayers

1994 ◽  
Vol 50 (1) ◽  
pp. 409-412 ◽  
Author(s):  
G. P. Luo ◽  
Z. M. Ai ◽  
Z. H. Lu ◽  
Y. Wei
Keyword(s):  
Langmuir Monolayers ◽  
Two Dimensional ◽  
Dendritic Crystal

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.

Microstructural and Micromorphological Studies on ZnSe Single Crystals Using AFM/FE-SEM/RO-XRD

2007 ◽  
Vol 336-338 ◽  
pp. 633-636 ◽  
Author(s):  
Huan Yong Li ◽  
Wan Qi Jie ◽  
Xiao Qin Wang ◽  
Ke Wei Xu
Keyword(s):  
Single Crystals ◽  
Crystal Surface ◽  
Growth Parameters ◽  
Two Dimensional ◽  
X Ray Diffraction ◽  
Growth Layer ◽  
Dendritic Crystal ◽  
X Ray ◽  
Atomic Force ◽  
Surface Micromorphology

The microstructure and surface micromorphology of ZnSe single crystals grown directly from zinc and selenium have been investigated using rotation orientation x-ray diffraction (RO-XRD), atomic force microscope (AFM) and field emission scanning electron microscope (FE-SEM). The ZnSe samples exhibit only the surface leaning to (111) singular face by the angle of 3.13°, which is the buildup of two-dimensional dendritic crystal layers. Numerous nuclei and cavities distribute unevenly across the crystal surface, governing the formation of growth layer, while the dendritic crystal layers develop rapidly by margining the smaller nuclei. The formation of these microstructure and micromorphology on the surface of ZnSe crystals depends on the surface supersaturation and the growth parameters.

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.

Sign in / Sign up

Export Citation Format

Share Document