scholarly journals Dielectric Relaxation Studies of Oligether of Ethylene Glycol at Microwave Frequencies

1991 ◽  
Vol 64 (6) ◽  
pp. 2030-2031 ◽  
Author(s):  
Hari Dutt Purohit ◽  
Ram Jeewan Sengwa
Keyword(s):  
Ethylene Glycol ◽  
Dielectric Relaxation ◽  
Microwave Frequencies ◽  
Relaxation Studies

Conformational and dielectric relaxation studies on hydrogen bonded binary mixture of ethylene glycol ethyl ether and methanol

2020 ◽  
Author(s):  
Vikas Uddhavrao Magar ◽  
Prabhakar Bhagwatrao Undre ◽  
Ahmed Saleh Alameen ◽  
Salama Ahmed Yaseen ◽  
Faizaa Awad Saif ◽  
...  
Keyword(s):  
Binary Mixture ◽  
Ethylene Glycol ◽  
Dielectric Relaxation ◽  
Ethyl Ether ◽  
Relaxation Studies ◽  
Glycol Ethyl Ether ◽  
Hydrogen Bonded

Dielectric Relaxation Studies of Silver Nanoparticles dispersed Liquid Crystal

2015 ◽  
Vol 8 (3) ◽  
pp. 2176-2188 ◽  
Author(s):  
Keisham Nanao Singh
Keyword(s):  
Activation Energy ◽  
Silver Nanoparticles ◽  
Liquid Crystal ◽  
Dielectric Relaxation ◽  
Relaxation Process ◽  
Relaxation Times ◽  
Low Frequency ◽  
Bulk Liquid ◽  
Molecular Rearrangement ◽  
Relaxation Studies

This article reports on the Dielectric Relaxation Studies of two Liquid Crystalline compounds - 7O.4 and 7O.6 - doped with dodecanethiol capped Silver Nanoparticles. The liquid crystal molecules are aligned homeotropically using CTAB. The low frequency relaxation process occurring above 1 MHz is fitted to Cole-Cole formula using the software Dielectric Spectra fit. The effect of the Silver Nanoparticles on the molecular dipole dynamics are discussed in terms of the fitted relaxation times, Cole-Cole distribution parameter and activation energy. The study indicate a local molecular rearrangement of the liquid crystal molecules without affecting the order of the bulk liquid crystal molecules but these local molecules surrounding the Silver Nanoparticles do not contribute to the relaxation process in the studied frequency range. The observed effect on activation energy suggests a change in interaction between the nanoparticles/liquid crystal molecules.

Sign in / Sign up

Export Citation Format

Share Document