Hierarchical assembly of smectic liquid crystal defects at undulated interfaces

Soft Matter ◽  
2020 ◽  
Vol 16 (36) ◽  
pp. 8352-8358
Author(s):  
Ryan S. Preusse ◽  
Elizabeth R. George ◽  
S. Ali Aghvami ◽  
Timothy M. Otchy ◽  
Mohamed Amine Gharbi
Keyword(s):  
Liquid Crystal ◽  
Surface Topography ◽  
Crystal Defects ◽  
Hierarchical Assembly ◽  
Smectic A ◽  
Smectic Liquid Crystal ◽  
The Creation ◽  
Effect Of Surface

Effect of surface topography in the creation of disclinations and the assembly of defects in a smectic A liquid crystal.

Optical activity and light scattering in the isotropic and smectic A* phases of a highly chiral smectic liquid crystal

1993 ◽  
Vol 14 (6) ◽  
pp. 1793-1800 ◽  
Author(s):  
Brian D. Yanoff ◽  
Andrew A. Ruether ◽  
Peter J. Collings ◽  
Andrew J. Slaney ◽  
John W. Goodby
Keyword(s):  
Liquid Crystal ◽  
Light Scattering ◽  
Optical Activity ◽  
Smectic A ◽  
Smectic Liquid Crystal

13C NMR Observation of Molecular Motions at the Smectic-A-Smectic-C (Smectic-C*) Transition in a Recemic (Chiral) Smectic Liquid Crystal

1990 ◽  
Vol 29 (Part 2, No. 7) ◽  
pp. L1153-L1156 ◽  
Author(s):  
Atsushi Yoshizawa ◽  
Hiroshi Kikuzaki ◽  
Toshihiro Hirai ◽  
Mamoru Yamane
Keyword(s):  
Liquid Crystal ◽  
13C Nmr ◽  
Molecular Motions ◽  
Smectic A ◽  
Smectic C ◽  
Smectic Liquid Crystal

Vapor deposition of a smectic liquid crystal: highly anisotropic, homogeneous glasses with tunable molecular orientation

Soft Matter ◽  
2016 ◽  
Vol 12 (11) ◽  
pp. 2942-2947 ◽  
Author(s):  
Jaritza Gómez ◽  
Jing Jiang ◽  
Ankit Gujral ◽  
Chengbin Huang ◽  
Lian Yu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Vapor Deposition ◽  
Molecular Orientation ◽  
Physical Vapor Deposition ◽  
Smectic A ◽  
Smectic Liquid Crystal

Physical vapor deposition (PVD) has been used to prepare glasses of itraconazole, a smectic A liquid crystal.

scholarly journals Laser-directed hierarchical assembly of liquid crystal defects and control of optical phase singularities

2012 ◽  
Vol 2 (1) ◽  
Author(s):  
Paul J. Ackerman ◽  
Zhiyuan Qi ◽  
Yiheng Lin ◽  
Christopher W. Twombly ◽  
Mauricio J. Laviada ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Crystal Defects ◽  
Optical Phase ◽  
Hierarchical Assembly ◽  
Phase Singularities ◽  
And Control

Smectic Liquid Crystal Defects for Self-Assembling of Building Blocks and Their Lithographic Applications

2011 ◽  
Vol 21 (4) ◽  
pp. 610-627 ◽  
Author(s):  
Yun Ho Kim ◽  
Dong Ki Yoon ◽  
Hyeon Su Jeong ◽  
Oleg D. Lavrentovich ◽  
Hee-Tae Jung
Keyword(s):  
Liquid Crystal ◽  
Building Blocks ◽  
Crystal Defects ◽  
Smectic Liquid Crystal ◽  
Self Assembling

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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