Collective and non-collective molecular dynamics in a ferroelectric nematic liquid crystal studied by broadband dielectric spectroscopy

被引：18

作者：

Erkoreka, Aitor ^{[1
]}

Mertelj, Alenka ^{[2
]}

Huang, Mingjun ^{[3
,4
]}

Aya, Satoshi ^{[3
,4
]}

Sebastian, Nerea ^{[2
]}

Martinez-Perdiguero, Josu ^{[1
]}

机构：

[1] Univ Basque Country, Fac Sci & Technol, Dept Phys, UPV,EHU, Bilbao, Spain

[2] Joef Stefan Inst, Ljubljana, Slovenia

[3] South China Univ Technol, South China Adv Inst Soft Matter Sci & Technol AI, Sch Mol Sci & Engn, Guangzhou, Peoples R China

[4] South China Univ Technol, Guangdong Prov Key Lab Funct & Intelligent Hybrid, Guangzhou, Peoples R China

来源：

JOURNAL OF CHEMICAL PHYSICS | 2023年 / 159卷 / 18期

关键词：

ELECTRODE POLARIZATION;

D O I：

10.1063/5.0173813

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A great deal of effort has been recently devoted to the study of dielectric relaxation processes in ferroelectric nematic liquid crystals, yet their interpretation remains unclear. In this work, we present the results of broadband dielectric spectroscopy experiments of a prototypical ferroelectric nematogen in the frequency range 10 Hz-110 MHz at different electrode separations and under the application of DC bias fields. The results evidence a complex behavior in all phases due to the magnitude of polar correlations in these systems. The observed modes have been assigned to different relaxation mechanisms based on existing theoretical frameworks.

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页数：10

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