Linear and nonlinear dielectric constant tensor for monolayer films in terms of orientational order parameters

2000 ◽  
Vol 112 (23) ◽  
pp. 10548-10555 ◽  
Author(s):  
Chen-Xu Wu ◽  
Wei Zhao ◽  
Mitsumasa Iwamoto ◽  
Ou-Yang Zhong-can
Keyword(s):  
Dielectric Constant ◽  
Orientational Order ◽  
Order Parameters ◽  
Monolayer Films ◽  
Nonlinear Dielectric ◽  
Constant Tensor ◽  
Linear And Nonlinear

Temperature Controlled Scanning Nonlinear Dielectric Microscopy

2003 ◽  
Vol 803 ◽  
Author(s):  
K. Ohara ◽  
Y. Cho
Keyword(s):  
Dielectric Constant ◽  
Single Crystal ◽  
Polarization State ◽  
Ferroelectric Materials ◽  
Nonlinear Dielectric ◽  
Surface Polarization ◽  
New Type ◽  
Linear And Nonlinear ◽  
Temperature Controlled ◽  
Constant Distribution

ABSTRACTScanning Nonlinear Dielectric Microscopy (SNDM) can obtain the linear and nonlinear dielectric constant distribution of dielectric and ferroelectric materials with sub-nanometer resolution. In this paper, we present the new type of SNDM which can control the sample temperature (80K-730K) in vacuum (less than 5×10−7 Torr), and its application to measure the surface polarization state on LiTaO3 single crystal.

scholarly journals Liquid Crystal Ordering in the Hexagonal Phase of Rod-Coil Diblock Copolymers

Polymers ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 1262
Author(s):  
Mikhail A. Osipov ◽  
Maxim V. Gorkunov ◽  
Alexander A. Antonov
Keyword(s):  
Liquid Crystal ◽  
Order Parameter ◽  
Density Functional ◽  
Diblock Copolymers ◽  
Microphase Separation ◽  
Hexagonal Phase ◽  
Orientational Order ◽  
Order Parameters ◽  
Copolymer Composition ◽  
Rigid Rod

Density functional theory of rod-coil diblock copolymers, developed recently by the authors, has been generalised and used to study the liquid crystal ordering and microphase separation effects in the hexagonal, lamellar and nematic phases. The translational order parameters of rod and coil monomers and the orientational order parameters of rod-like fragments of the copolymer chains have been determined numerically by direct minimization of the free energy. The phase diagram has been derived containing the isotropic, the lamellar and the hexagonal phases which is consistent with typical experimental data. The order parameter profiles as functions of temperature and the copolymer composition have also been determined in different anisotropic phases. Finally, the spatial distributions of the density of rigid rod fragments and of the corresponding orientational order parameter in the hexagonal phase have been calculated.

Magnetoviscosity and orientational order parameters of dilute ferrofluids

2002 ◽  
Vol 116 (20) ◽  
pp. 9078-9088 ◽  
Author(s):  
Patrick Ilg ◽  
Martin Kröger ◽  
Siegfried Hess
Keyword(s):  
Orientational Order ◽  
Order Parameters

Orientational order parameters of nematogenic trans-4-propyl cyclohexyl-4 (trans-4-alkyl cyclohexyl) benzoates

Pramana ◽  
1982 ◽  
Vol 19 (4) ◽  
pp. 349-355 ◽  
Author(s):  
Srinivasa ◽  
M M M Abdoh ◽  
N C Shivaprakash ◽  
J Shashi-Dhara Prasad
Keyword(s):  
Orientational Order ◽  
Order Parameters

Comparison of the orientational order parameters determined from X-ray diffraction and13C NMR studies of a hockey stick-shaped compound

2009 ◽  
Vol 82 (6) ◽  
pp. 433-443 ◽  
Author(s):  
Gautam Sarkar ◽  
Malay Kumar Das ◽  
Ranjit Paul ◽  
Banani Das ◽  
Wolfgang Weissflog
Keyword(s):  
Orientational Order ◽  
Order Parameters ◽  
X Ray Diffraction ◽  
Nmr Studies ◽  
Hockey Stick ◽  
X Ray

Normal modes of a cylindrical waveguide in a medium with a nonlinear dielectric constant

1984 ◽  
Vol 27 (12) ◽  
pp. 1061-1065
Author(s):  
V. I. Korneev ◽  
N. N. Akhmediev ◽  
T. D. Shermergor
Keyword(s):  
Dielectric Constant ◽  
Normal Modes ◽  
Cylindrical Waveguide ◽  
Nonlinear Dielectric
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