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Updated: Aug 13, 2026

The Preparation of Electrohydrodynamic Bridges from Polar Dielectric Liquids
Published on: September 30, 2014
"Picosecond dielectric relaxation and hydrogen-bond dynamics of Trihydric alcohols in dimethyl sulfoxide mixtures"
Pramod R Konmare1, Aniket D Bokhare1, Nitin P Garad1
1School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431606, MS, India.
Abstract:
We report a comparative picosecond dielectric relaxation study of trihydric alcohols (glycerol, 1,2,4-butanetriol, 1,2,5-pentanetriol, 1,2,6-hexanetriol) in binary mixtures with dimethyl sulfoxide (DMSO). Using time-domain reflectometry (TDR) in the GHz frequency range of 10 MHz to 30 GHz, we determined ε₀, τ, geff, Bruggeman factor, and excess parameters. The relaxation dynamics showed pronounced dependence on chain length and hydroxyl arrangement: longer chain triols exhibited deviations from ideal mixing due to enhanced flexibility, whereas glycerol retained unique relaxation due to compact hydrogen-bonding networks. Excess parameters and Kirkwood factors confirmed cooperative/anti-cooperative dipolar behavior modulated by solute structure. These results fill a gap in dielectric relaxation literature on trihydric alcohols and provide insights for solvent system design in biochemical and cryoprotective applications.
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