论文标题

在压缩液晶8OCB及其纳米胶体中,与离子相关的低频介电特性的关键行为

Critical-like behavior of ionic-related, low-frequency dielectric properties in compressed liquid crystalline 8OCB and its nanocolloid

论文作者

Łoś, J., Drozd-Rzoska, A., Rzoska, S. J.

论文摘要

该报告介绍了与液晶环氧酰甲苯基及其纳米胶体中的压力相关宽带介电光谱(BDS)研究,其纳米胶体具有BATIO3纳米颗粒,重点介绍了低频离子离子结构域和预交换波动的影响。因此,解决了基本的外生(压力)和内源性(纳米颗粒)对介电特性的影响。基于创新的衍生化分析揭示了对介电介电常数和电导率的离子贡献的功能“关键”描述。还提出了补充介电恒定扫描,并介绍了对偶极折叠排列的见解。研究涵盖了复杂液体(SMA) - 固体晶体相变的令人困惑的情况,揭示了相对强的临界式预发作用,到目前为止,对于不连续的“熔化过渡”几乎没有观察到这些效应。

The report presents pressure-related broadband dielectric spectroscopy (BDS) studies in liquid crystalline octyloxycyanbiphenyl and its nanocolloid with BaTiO3 nanoparticles, focused on the low-frequency ionic domain and the impact of pretransitional fluctuations. Hence basic exogenic (pressure) and endogenic (nanoparticles) impacts on dielectric properties are addressed. The innovative derivative-based analysis revealed functional 'critical-like' descriptions of ionic contributions to dielectric permittivity and electric conductivity. The supplementary dielectric constant scan, yielding insight into dipole-diple arrangements, is also presented. Studies cover the puzzling case of complex liquid (SmA) - Solid crystal phase transition, revealing relatively strong critical-like premelting effects, which have hardly been observed for the discontinuous 'melting transition' so far.

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