S0501-4-1 Microscopic observation of application process of chromonic liquid crystal

2010 ◽  
Vol 2010.2 (0) ◽  
pp. 71-72
Author(s):  
Tsutomu TAKAHASHI ◽  
Kaoru INOUE
Keyword(s):  
Liquid Crystal ◽  
Microscopic Observation ◽  
Application Process

CARS Microscopic Observation of a Nematic Liquid Crystal Droplet in an Electric Field

2013 ◽  
Vol 63 (4) ◽  
pp. 466-472
Author(s):  
Jin-Soon PARK* ◽  
Jong-Hyun KIM ◽  
Eun Seong LEE ◽  
Ju Hyun PARK ◽  
Satoshi KAWATA
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Nematic Liquid Crystal ◽  
Microscopic Observation ◽  
Liquid Crystal Droplet

scholarly journals Depth-selective microscopic observation of a photomobile liquid crystal polymer under UV illumination

2014 ◽  
Vol 16 (48) ◽  
pp. 27074-27077 ◽  
Author(s):  
Kenji Katayama ◽  
Youngwoon Choi ◽  
Jeon Woong Kang ◽  
Zahid Yaqoob ◽  
Peter T. C. So ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Microscopic Observation ◽  
Liquid Crystal Polymer ◽  
Microscopic Technique ◽  
Uv Illumination ◽  
Crystal Polymer ◽  
Molecular Ordering ◽  
Crystal Film

Molecular ordering inside a photomobile liquid crystal film was anisotropically induced by UV illumination, revealed by a brand-new microscopic technique.

Electron Microscopic Observation of the Longitudinal Organization of Poly (p-Phenylene Terephthalamide) Fibers

1982 ◽  
Vol 40 ◽  
pp. 680-681
Author(s):  
Li Li-Sheng ◽  
L.F. Allard ◽  
W.C. Bigelow
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Scanning Electron Microscopy ◽  
Microscopic Observation ◽  
Electron Microscopic Observation ◽  
Electron Microscopic ◽  
Aromatic Polyamides ◽  
Radial Arrangement ◽  
Scanning Electron ◽  
Better Than

The aromatic polyamides form a class of fibers having mechanical properties which are much better than those of aliphatic polyamides. Currently, the accepted morphology of these fibers as proposed by M.G. Dobb, et al. is a radial arrangement of pleated sheets, with the plane of the pleats parallel to the axis of the fiber. We have recently obtained evidence which supports a different morphology of this type of fiber, using ultramicrotomy and ion-thinning techniques to prepare specimens for transmission and scanning electron microscopy.

Freeze-fracture TEM of the helical smectic A* phase

1992 ◽  
Vol 50 (1) ◽  
pp. 278-279
Author(s):  
K.J. Ihn ◽  
R. Pindak ◽  
J. A. N. Zasadzinski
Keyword(s):  
Liquid Crystal ◽  
Grain Boundary ◽  
Grain Boundaries ◽  
Freeze Fracture ◽  
Smectic Phase ◽  
Layer Spacing ◽  
Screw Dislocations ◽  
Smectic A ◽  
Smectic Phases ◽  
Discrete Amount

A new liquid crystal (called the smectic-A* phase) that combines cholesteric twist and smectic layering was a surprise as smectic phases preclude twist distortions. However, the twist grain boundary (TGB) model of Renn and Lubensky predicted a defect-mediated smectic phase that incorporates cholesteric twist by a lattice of screw dislocations. The TGB model for the liquid crystal analog of the Abrikosov phase of superconductors consists of regularly spaced grain boundaries of screw dislocations, parallel to each other within the grain boundary, but rotated by a fixed angle with respect to adjacent grain boundaries. The dislocations divide the layers into blocks which rotate by a discrete amount, Δθ, given by the ratio of the layer spacing, d, to the distance between grain boundaries, lb; Δθ ≈ d/lb (Fig. 1).

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