研究目的
Investigating the effective permittivity of nematic liquid crystal 4-n-pentyl-4’-cyanobiphenyl embedded in different porous membranes and dispersed with aerosil nanoparticles using broadband dielectric spectroscopy.
研究成果
The experimental points of the three investigated composites lie between the lower limits of the Wiener and Hashin–Shtrikman bounds, reflecting changes in the structure of the composites. The position of the experimental points suggests differences in the structure of the composites, with the aerosil-5CB dispersion points fitting well by the lower limit of the Wiener bounds. The study highlights the need for new theoretical approaches to better describe the experimental data, considering the specific structure and anisotropy of the liquid crystal in the composites.
研究不足
The study is limited by the specific materials used (nematic liquid crystal 4-n-pentyl-4’-cyanobiphenyl, aerosil nanoparticles, and specific porous membranes) and the frequency range of 106 to 109 Hz. The theoretical models applied may not fully capture the complexity of the systems studied.
