Microcalorimetric study of nematic-to-neat-soap and nematic-to-isotropic phase transitions in a lyotropic liquid crystal

1991 ◽  
Vol 66 (8) ◽  
pp. 1062-1065 ◽  
Author(s):  
S. T. Shin ◽  
Satyendra Kumar
Keyword(s):  
Phase Transitions ◽  
Liquid Crystal ◽  
Lyotropic Liquid Crystal ◽  
Isotropic Phase ◽  
Neat Soap

Soret effect in lyotropic liquid crystal in the isotropic phase revealed by time-resolved thermal lens

2020 ◽  
Vol 312 ◽  
pp. 113381
Author(s):  
G.M. Oliveira ◽  
V.S. Zanuto ◽  
G.A.S. Flizikowski ◽  
N.M. Kimura ◽  
A.R. Sampaio ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Thermal Lens ◽  
Soret Effect ◽  
Lyotropic Liquid Crystal ◽  
Isotropic Phase ◽  
Time Resolved

Laser Diffractions in Lyotropic Liquid Crystal Formed by Liquid Dishiwash

2010 ◽  
Vol 663-665 ◽  
pp. 779-782
Author(s):  
Yuan Ming Huang ◽  
Wei Wei Liu
Keyword(s):  
Liquid Crystal ◽  
Optical Microscopy ◽  
Red Light ◽  
Lamellar Phase ◽  
Lyotropic Liquid Crystal ◽  
Isotropic Phase ◽  
Polarized Optical Microscopy ◽  
Neon Laser ◽  
Helium Neon Laser ◽  
Helium Neon

We demonstrated that a lamellar phase of lyotropic liquid crystal formed by liquid dishwash could assemble themselves into crystal droplets when their isotropic phase was slowly changed into lamellar phase on the glass substrate. Characterization by means of polarized optical microscopy showed that a pattern of liquid crystal droplets was developed in the thin films formed by liquid dishwash. Our laser light diffraction experiments confirmed that these liquid crystal droplets could effectively diffract the incident red light from a helium-neon laser. On the basis of the Fraunhofer diffraction equation, we derived for the diameter of liquid crystal droplets. The diameter of liquid crystal droplet is 42.517 m, and almost agreement with the graph of polarized optical microscopy.

Approach to a second-order nematic-isotropic phase transition in a lyotropic liquid crystal

1984 ◽  
Vol 29 (2) ◽  
pp. 1010-1012 ◽  
Author(s):  
Charles Rosenblatt ◽  
Satyendra Kumar ◽  
J. D. Litster
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Second Order ◽  
Lyotropic Liquid Crystal ◽  
Isotropic Phase

Rarely Observed Phase Transitions in a Novel Lyotropic Liquid Crystal System

1997 ◽  
Vol 78 (5) ◽  
pp. 899-902 ◽  
Author(s):  
J. Katsaras ◽  
R. L. Donaberger ◽  
I. P. Swainson ◽  
D. C. Tennant ◽  
Z. Tun ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Liquid Crystal ◽  
Lyotropic Liquid Crystal ◽  
Crystal System ◽  
Liquid Crystal System

Study on Amphiphilic Molecules’ Self-Assembling into Lamellar Phase Process

2010 ◽  
Vol 663-665 ◽  
pp. 751-754
Author(s):  
Yuan Ming Huang ◽  
Wei Wei Liu
Keyword(s):  
Phase Transition ◽  
Liquid Crystal ◽  
Lamellar Phase ◽  
Lyotropic Liquid Crystal ◽  
Isotropic Phase ◽  
Self Assembling ◽  
Amphiphilic Molecules ◽  
Maltese Cross ◽  
Phase Process ◽  
Cross Structure

Amphiphilic molecules self-assemble lamellar phase process in lyotropic liquid crystal formed by liquid dishwash was investigated with optical microscopy as concentration increases from its isotropic phase to its lamellar phase. We demonstrated that liquid dishwash molecules could assemble themselves into lamellar phase when their concentration increases between one pieces of glass substrate. We discussed the formative processes of Maltese-cross structure and phase transition from isotropic to lamellar phase.

Inversion in the change of the refractive index and memory effect near the nematic-isotropic phase transition in a lyotropic liquid crystal

2000 ◽  
Vol 61 (5) ◽  
pp. 5410-5413 ◽  
Author(s):  
J. R. D. Pereira ◽  
A. J. Palangana ◽  
A. M. Mansanares ◽  
E. C. da Silva ◽  
A. C. Bento ◽  
...  
Keyword(s):  
Phase Transition ◽  
Refractive Index ◽  
Liquid Crystal ◽  
Memory Effect ◽  
Lyotropic Liquid Crystal ◽  
Isotropic Phase
Sign in / Sign up

Export Citation Format

Share Document