Pressure-volume-temperature relations of liquid, crystal, and glass of o-terphenyl: excess amorphous entropies, and factors determining molecular mobility

1989 ◽  
Vol 93 (2) ◽  
pp. 948-955 ◽  
Author(s):  
Motosuke Naoki ◽  
Susumu Koeda
Keyword(s):  
Liquid Crystal ◽  
Molecular Mobility

Molecular mobility and strengthening of oriented liquid-crystal polymers

1999 ◽  
Vol 41 (5) ◽  
pp. 777-779
Author(s):  
E. A. Egorov ◽  
A. V. Savitskii ◽  
V. V. Zhizhenkov ◽  
I. A. Gorshkova
Keyword(s):  
Liquid Crystal ◽  
Molecular Mobility ◽  
Liquid Crystal Polymers

Complex molecular dynamics of a symmetric model discotic liquid crystal revealed by broadband dielectric, thermal and neutron spectroscopy

Soft Matter ◽  
2020 ◽  
Vol 16 (8) ◽  
pp. 2005-2016 ◽  
Author(s):  
Arda Yildirim ◽  
Christina Krause ◽  
Reiner Zorn ◽  
Wiebke Lohstroh ◽  
Gerald J. Schneider ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Liquid Crystal ◽  
Molecular Mobility ◽  
Time Range ◽  
Symmetric Model ◽  
Neutron Spectroscopy ◽  
Discotic Liquid Crystal

The molecular mobility of the discotic liquid crystal HAT6 is investigated in a broad time range using different methods.

scholarly journals Glycolipids from natural sources: dry liquid crystal properties, hydrogen bonding and molecular mobility of Palm Kernel oil mannosides

2020 ◽  
Vol 47 (8) ◽  
pp. 1180-1194 ◽  
Author(s):  
Alfonso Martinez-Felipe ◽  
Thamil Selvi Velayutham ◽  
Nurul Fadhilah Kamalul Aripin ◽  
Marina Yusoff ◽  
Emma Farquharson ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Liquid Crystal ◽  
Molecular Mobility ◽  
Palm Kernel ◽  
Natural Sources ◽  
Palm Kernel Oil ◽  
Kernel Oil ◽  
Crystal Properties

Molecular Mobility Effect on Magnetic Interactions in All-Organic Paramagnetic Liquid Crystal with Nitroxide Radical as a Hydrogen-Bonding Acceptor

2018 ◽  
Vol 122 (29) ◽  
pp. 7409-7415 ◽  
Author(s):  
Sho Nakagami ◽  
Takuya Akita ◽  
Daichi Kiyohara ◽  
Yoshiaki Uchida ◽  
Rui Tamura ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Liquid Crystal ◽  
Molecular Mobility ◽  
Nitroxide Radical ◽  
Magnetic Interactions

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).

Attractive mode force microscopy of chiral liquid crystal surfaces

1992 ◽  
Vol 50 (1) ◽  
pp. 268-269
Author(s):  
B.D. Terris ◽  
R. J. Twieg ◽  
C. Nguyen ◽  
G. Sigaud ◽  
H. T. Nguyen
Keyword(s):  
Liquid Crystal ◽  
Crystal Surfaces ◽  
Free Surfaces ◽  
Control Range ◽  
Force Microscopy ◽  
Liquid Crystal Films ◽  
Chiral Liquid Crystal ◽  
Crystal Films ◽  
Electrostatic Charging ◽  
And Shifts

We have used a force microscope in the attractive, or noncontact, mode to image a variety of surfaces. In this mode, the microscope tip is oscillated near its resonant frequency and shifts in this frequency due to changes in the surface-tip force gradient are detected. We have used this technique in a variety of applications to polymers, including electrostatic charging, phase separation of ionomer surfaces, and crazing of glassy films.Most recently, we have applied the force microscope to imaging the free surfaces of chiral liquid crystal films. The compounds used (Table 1) have been chosen for their polymorphic variety of fluid mesophases, all of which exist within the temperature control range of our force microscope.

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