Synthesis, characterization of V2O5 nanoparticle and dispersion of them into nematic liquid crystal

Eskalen, Hasan; Özğan, Şükrü; Kerli, Süleyman

doi:10.1007/s00339-019-3157-9

Cited by 12 publications

(1 citation statement)

References 51 publications

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“…It is well known that doping of metal and metal oxide nanoparticles in a liquid-crystal matrix leads to a decrease in the electro-optical response and threshold voltage, as well as some changes in the phase diagram of the system [21][22][23][24][25][26][27][28][29]. Among metal nanoparticles, gold nanoparticles (GNPs) with their size-dependent plasmon response are of particular interest [16,[30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Electro-optical performance of nematic liquid crystals doped with gold nanoparticles

Чаусов¹,

Kurilov²,

Kucherov³

et al. 2020

J. Phys.: Condens. Matter

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The effect of gold nanoparticles on the dielectric, electro-optical, and rheological properties of the ZhK-1289 liquid-crystal mixture that de ne the response time of liquid-crystal devices with a concentration range of 0.06-5 wt% was investigated in this study. A phase diagram of the obtained composites was formed demonstrating an increase in the clearing temperature and a broadening of the mesophase existence range in the case of doping nanoparticles. It was found that in the obtained dispersions there are structural rearrangements in the low concentration range leading to an increase in the lateral bending stiffness of the liquid-crystal matrix, a decrease in the response time and threshold voltage of the Freedericksz transition, and also an increase in the anisotropy of the dielectric permittivity and the refraction index. The improvement of the electro-optical performance of the liquid crystal can be caused by the nanoparticle adsorption of impurity ions, which reduces the eld-screening effect in the liquid crystal. According to the results obtained in this study, the optimal values of the physical parameters of liquid-crystal composites doped with gold nanoparticles for their application in practice are achieved in a concentration range of 0.5-1 wt%.

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