scholarly journals Liquid Crystal Wavefront Correctors

10.5772/54265 ◽  
2012 ◽  
Author(s):  
Li Xuan ◽  
Zhaoliang Cao ◽  
Quanquan Mu ◽  
Lifa Hu ◽  
Zenghui Peng
Keyword(s):  
Liquid Crystal ◽  
Wavefront Correctors

Experimental analysis of the fitting error of diffractive liquid crystal wavefront correctors for atmospheric turbulence corrections

2016 ◽  
Vol 367 ◽  
pp. 199-205
Author(s):  
Lina Shao ◽  
Zhaoliang Cao ◽  
Quanquan Mu ◽  
Peiguang Zhang ◽  
Lishuang Yao ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Atmospheric Turbulence ◽  
Experimental Analysis ◽  
Wavefront Correctors ◽  
Fitting Error

Dispersion of Liquid Crystal Wavefront Correctors

2010 ◽  
Vol 39 (6) ◽  
pp. 1014-1020
Author(s):  
刘肇楠 LIU Zhao-nan ◽  
李抄 LI Chao ◽  
夏明亮 XIA Ming-liang ◽  
李大禹 LI Da-yu ◽  
宣丽 XUAN Li
Keyword(s):  
Liquid Crystal ◽  
Wavefront Correctors

New type of liquid crystal wavefront correctors

1999 ◽  
Author(s):  
Alexander F. Naumov ◽  
Mikhail Y. Loktev ◽  
Igor R. Guralnik ◽  
Gleb V. Vdovin
Keyword(s):  
Liquid Crystal ◽  
New Type ◽  
Wavefront Correctors

Technology and electro-optical properties of modal liquid crystal wavefront correctors

2003 ◽  
Vol 5 (5) ◽  
pp. S231-S238 ◽  
Author(s):  
S P Kotova ◽  
P Clark ◽  
I R Guralnik ◽  
N A Klimov ◽  
M Yu Kvashnin ◽  
...  
Keyword(s):  
Optical Properties ◽  
Liquid Crystal ◽  
Wavefront Correctors

Static and dynamic models of liquid crystal wavefront correctors

2001 ◽  
Author(s):  
Mikhail Y. Loktev ◽  
Alexander F. Naumov ◽  
Igor R. Guralnik
Keyword(s):  
Liquid Crystal ◽  
Dynamic Models ◽  
Wavefront Correctors

MODAL LIQUID CRYSTAL WAVEFRONT CORRECTORS

1999 ◽  
Author(s):  
GORDON D. LOVE ◽  
ALEXANDER F. NAUMOV ◽  
MICHAEL Yu. LOKTEV ◽  
IGOR R. GURALNIK ◽  
GLEB V. VDOVIN
Keyword(s):  
Liquid Crystal ◽  
Wavefront Correctors

scholarly journals A simple method for evaluating the wavefront compensation error of diffractive liquid-crystal wavefront correctors

2009 ◽  
Vol 17 (20) ◽  
pp. 17715 ◽  
Author(s):  
Zhaoliang Cao ◽  
Quanquan Mu ◽  
Lifa Hu ◽  
Xinghai Lu ◽  
Li Xuan
Keyword(s):  
Liquid Crystal ◽  
Simple Method ◽  
Compensation Error ◽  
Wavefront Correctors

A novel method of measuring the interaction matrix for diffractive liquid crystal wavefront correctors

2016 ◽  
Vol 380 ◽  
pp. 361-367 ◽  
Author(s):  
Zhaoliang Cao ◽  
Lina Shao ◽  
Yukun Wang ◽  
Quanquan Mu ◽  
Lifa Hu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Interaction Matrix ◽  
Novel Method ◽  
Wavefront Correctors

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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