期刊
JOURNAL OF MOLECULAR LIQUIDS
卷 267, 期 -, 页码 377-383出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.molliq.2017.11.157
关键词
Ferroelectric nanoparticles; Ferromagnetic nanoparticles; Liquid crystal; Suspensions
资金
- EU Horizon 2020 Framework Programme for Research and Innovation [701558]
- Slovenian Research Agency [P1-0192, P2-0089, J7-8267]
The pioneering realization of suspensions of ferroelectric nanoparticles in a nematic host was one of excellent contributions of Yuri Reznikov to the science of liquid crystals [Y. Reznikov et al., Appl. Phys. Lett. 82 (2003) 191]. This achievement created great excitement as it entailed the enhancement of materials' dielectric properties and increase of the phase transition temperature between nematic and isotropic phase. In this contribution, we examine the spectrum of fundamental fluctuations in one of his ferroelectric suspensions by dynamic light scattering measurements, which gives insight into the coupling between the particles and the orientation of the liquid crystalline matrix. We set side by side these results with the equivalent ones obtained for the case of stable suspensions of ferromagnetic nanoplatelets in a nematic matrix showing macroscopic ferromagnetic ordering. The underlying origin of the difference between the particle -matrix coupling observed in both cases is discussed and its effect on the orientational fluctuations spectrum is compared. (C) 2017 Elsevier B.V. All rights reserved.
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