The regulation of electro-optical properties and polymer morphology of polymer-dispersed liquid crystal films with silicon nanostructure

In this work, the thiol modified silica nanostructures (SiO2-SH) were doped into polymer-dispersed liquid crystal (PDLC) films. The SEM was used to observe the morphology of the polymer microstructure. The electro-optical (E-O) property test was determined by a liquid crystal parameter tester. The SEM images suggested that the SiO2-SH nanoparticles can react with acrylate groups to form the polymer matrix. The saturation voltage decreased by half in the sample when the dosage of the SiO2-SH nanoparticles was 7.5 wt%, which may be due to the reduced anchoring strength of the polymer matrix incorporated with silicon nanoparticles resulting from the lower surface energy and the enhanced steric repulsions of LC droplets and polymer matrix. In addition, the preparation conditions like polymerisation temperatures and UV light intensity also effectively regulated the E-O properties and polymer microstructure of the PDLC film with silica nanostructure. Thus, the results showed that the E-O properties and the polymer morphology of PDLC films with silicon nanostructures can be effectively regulated by doping SiO2-SH nanoparticles and regulating the preparation conditions such as the polymerisation temperature and UV light intensity. This work can provide practical guidance for modulating the properties of PDLC films.</p

Additional file 1: of Inequality in early childhood neurodevelopment in six poor rural counties of China: a decomposition analysis

Supplemental Tables Detailed information about sensitivity analyses. Table S1. Prevalence and concentration index of suspected developmental delay, with missing income imputed. Table S2. Associations of socioeconomic factors with suspected developmental delay, with missing income imputed. Table S3. Contributions of socioeconomic factors to inequality in suspected developmental delay, with missing income imputed. Table S4. Associations of socioeconomic factors with suspected developmental delay, with different cutoff points. Table S5. Concentration index of suspected developmental delay, with different cutoff points. Table S6. Contributions of socioeconomic factors to inequality in suspected developmental delay, with different cutoff points. (DOCX 25 kb