scholarly journals Photoreversible Birefringence Change of Diarylethene Single Crystals as Revealed by Change in Molecular Polarizability Anisotropy

2020 ◽  
Vol 124 (23) ◽  
pp. 4732-4741
Author(s):  
Kohei Morimoto ◽  
Hajime Tsujioka ◽  
Daichi Kitagawa ◽  
Seiya Kobatake
Keyword(s):  
Single Crystals ◽  
Molecular Polarizability ◽  
Polarizability Anisotropy

scholarly journals Molecular polarizability anisotropy of cyclopropane

1968 ◽  
Vol 21 (10) ◽  
pp. 2551 ◽  
Author(s):  
MJ Aroney ◽  
RJW Le Fevre ◽  
W Luttke ◽  
GLD Ritchie ◽  
PJ Stiles
Keyword(s):  
Molecular Polarizability ◽  
Polarizability Anisotropy

Rayleigh scattering depolarization ratio and molecular polarizability anisotropy for gases

1978 ◽  
Vol 74 (0) ◽  
pp. 3008 ◽  
Author(s):  
Martin P. Bogaard ◽  
A. David Buckingham ◽  
Raymond K. Pierens ◽  
Allan H. White
Keyword(s):  
Rayleigh Scattering ◽  
Molecular Polarizability ◽  
Polarizability Anisotropy ◽  
Depolarization Ratio

An Optical Study on Orientational Order Parameter and Molecular Polarizability in Benzylidene Anilines

2011 ◽  
Vol 181-182 ◽  
pp. 102-105 ◽  
Author(s):  
M. Ramakrishna Nanachara Rao ◽  
P.V. Datta Prasad ◽  
V.G.K.M. Pisipati ◽  
D. Madhavi Latha
Keyword(s):  
Order Parameter ◽  
Nematic Phase ◽  
Field Model ◽  
Orientational Order ◽  
Internal Field ◽  
Molecular Polarizability ◽  
Refractive Indices ◽  
Polarizability Anisotropy ◽  
Optical Study ◽  
Molecular Polarizabilities

Refractive indices measurements are carried out in four alkoxy benzylidene anilines viz., N-(p-n-methoxy and ethoxy benzaldehyde)-p-n-dodecyl and tetra decyl anilines, 1O.12, 1O.14, 2O.12 and 2O.14. First three compounds exhibit monovariant nematic phase while the last compound exhibits nematic and SmA phases with variable thermal ranges. The molecular polarizabilities are calculated from the refractive indices and the density using the well known internal field models by Vuks and Neugebauer. The molecular polarizability anisotropy is estimated from the Lippincott δ-function model as well as molecular vibrational methods. The order parameter is estimated using a) from the Haller’s extrapolation from molecular polarizabilities, b) from the scaling factors obtained from the equations by Vuks and Neugbeaur and c) directly from the birefringence - a method developed by Kuczynski et al without considering any internal field model to the liquid crystal molecule. The results evaluated from these methods are compared from one another and the limitations of the methods used are discussed.

scholarly journals Molecular polarizability anisotropy of liquid water revealed by terahertz-induced transient orientation

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Peter Zalden ◽  
Liwei Song ◽  
Xiaojun Wu ◽  
Haoyu Huang ◽  
Frederike Ahr ◽  
...  
Keyword(s):  
Liquid Water ◽  
Molecular Polarizability ◽  
Polarizability Anisotropy

scholarly journals Measurement of molecular polarizability anisotropy via alignment-induced spatial focusing and defocusing

2012 ◽  
Vol 85 (5) ◽  
Author(s):  
Hao Li ◽  
Wenxue Li ◽  
Yahui Feng ◽  
Jia Liu ◽  
Haifeng Pan ◽  
...  
Keyword(s):  
Molecular Polarizability ◽  
Polarizability Anisotropy ◽  
Spatial Focusing

Molecular polarizability anisotropy of some five-membered cyclic imides

2011 ◽  
Vol 997 (1-3) ◽  
pp. 20-29 ◽  
Author(s):  
V.V. Prezhdo ◽  
P. Kowalski ◽  
T. Kowalska ◽  
V.V. Zubkova ◽  
K. Olan ◽  
...  
Keyword(s):  
Molecular Polarizability ◽  
Polarizability Anisotropy ◽  
Cyclic Imides

Experimental determination of molecular polarizability anisotropy of nematogens by depolarized Rayleigh light scattering

2003 ◽  
Vol 30 (6) ◽  
pp. 697-700 ◽  
Author(s):  
KAZUHIRO YOKOTA ◽  
TATSUTOSHI SHIODA ◽  
MICHI NAKATA ◽  
YOICHI TAKANISHI ◽  
KEN ISHIKAWA ◽  
...  
Keyword(s):  
Light Scattering ◽  
Experimental Determination ◽  
Molecular Polarizability ◽  
Polarizability Anisotropy ◽  
Rayleigh Light Scattering ◽  
Rayleigh Light

Cotton–Mouton effect and optical-frequency molecular polarizability anisotropy of ethylene

1998 ◽  
Vol 293 (3-4) ◽  
pp. 197-201 ◽  
Author(s):  
Michael H. Coonan ◽  
Geoffrey L.D. Ritchie
Keyword(s):  
Molecular Polarizability ◽  
Optical Frequency ◽  
Polarizability Anisotropy

The Microstructure of Shock-Synthesized Diamond

1967 ◽  
Vol 25 ◽  
pp. 324-325
Author(s):  
Lucien F. Trueb
Keyword(s):  
Single Crystals ◽  
Preferred Orientation ◽  
High Magnification ◽  
Texture Pattern ◽  
Shock Process ◽  
New Type ◽  
Diffraction Diagram

A new type of synthetic industrial diamond formed by an explosive shock process has been recently developed by the Du Pont Company. This material consists of a mixture of two basically different forms, as shown in Figure 1: relatively flat and compact aggregates of acicular crystallites, and single crystals in the form of irregular polyhedra with straight edges.Figure 2 is a high magnification micrograph typical for the fibrous aggregates; it shows that they are composed of bundles of crystallites 0.05-0.3 μ long and 0.02 μ. wide. The selected area diffraction diagram (insert in Figure 2) consists of a weak polycrystalline ring pattern and a strong texture pattern with arc reflections. The latter results from crystals having preferred orientation, which shows that in a given particle most fibrils have a similar orientation.

A New Defect in Polyethylene Single Crystals

1973 ◽  
Vol 31 ◽  
pp. 70-71
Author(s):  
E. L. Thomas ◽  
S. L. Sass
Keyword(s):  
Single Crystals ◽  
Screw Dislocation ◽  
Small Distance ◽  
Dipole Model ◽  
Dislocation Dipole ◽  
Chain Folding ◽  
Black And White ◽  
Polymer Crystal ◽  
Different Types

In polyethylene single crystals pairs of black and white lines spaced 700-3,000Å apart, parallel to the [100] and [010] directions, have been identified as microsector boundaries. A microsector is formed when the plane of chain folding changes over a small distance within a polymer crystal. In order for the different types of folds to accommodate at the boundary between the 2 fold domains, a staggering along the chain direction and a rotation of the chains in the plane of the boundary occurs. The black-white contrast from a microsector boundary can be explained in terms of these chain rotations. We demonstrate that microsectors can terminate within the crystal and interpret the observed terminal strain contrast in terms of a screw dislocation dipole model.

Sign in / Sign up

Export Citation Format

Share Document