Object

Title: Dynamic Processes during Phase Transitions and Structural Transformations in Oriented Liquid Crystal Systems

Ստեղծողը:

Bezhanova, L. S. ; Atanesyan, A. K.

Տեսակ:

Հոդված

Հրապարակման մանրամասներ:

Established in 2008

Ամսագրի կամ հրապարակման վերնագիր:

Armenian Journal of Physics=Ֆիզիկայի հայկական հանդես

Հրապարակման ամսաթիվ:

2020

Հատոր:

13

Համար:

3

ISSN:

1829-1171

Պաշտոնական URL:


Ծածկույթ:

198-205

Ամփոփում:

The dynamic parameters of liquid crystal (LC) systems in liquid crystalline and solid phases, such as orien¬ta¬tion relaxation time and ordering of molecules, were studied by ESR technique with the help of spin probe. It was determined that, depending on the LC system, the rotatory diffusion correlation time (τ_(c )) changes in the same way as the rotational anisotropy. For investigated LC systems in liquid state 10^(-11)<τ_c<10^(-9 ) sec was found. In a frozen LC system, depending on the particular molecular structure of the system’s component, the high molecular mobility of τ_(c )=10^(-9) sec was managed to obtain. It’s shown that such a high mobility of molecules, far beyond the LC→Crystal transition point, is caused by the structural features of component’s molecules that lead to an increase in system polarity and changes in the activation energy for rotational motion of molecules.

Ձևաչափ:

pdf

Նույնացուցիչ:

oai:arar.sci.am:263321

Բնօրինակի գտնվելու վայրը:

ՀՀ ԳԱԱ Հիմնարար գիտական գրադարան

Object collections:

Last modified:

Dec 13, 2023

In our library since:

Nov 5, 2020

Number of object content hits:

59

All available object's versions:

https://arar.sci.am/publication/286789

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