Polarization Microscopy Study on Piezo-Optical Effect of Polymer Dispersed Liquid Crystal Films

We report on the synthesis and characteristics of a holographic polymer dispersed liquid crystal (H-PDLC) switchable grating based on nano-Ag particles. The influence of doping different concentrations of nano-Ag on the diffraction efficiency, driving voltage, and response time of the H-PDLC grating is investigated. The best grating characteristics were achieved with 0.05% nano-Ag doping. Calculated and experimental results reveal that the improvement of the characteristics is likely due to the surface plasmon effect of nano-Ag.

show abstract

Electro-optical characteristics of holographic polymer dispersed liquid crystal gratings doped with nanosilver

Zhang

Jiao

Gui

et al. 2013

Appl. Opt.

View full text Add to dashboard Cite

show abstract

Negative piezo-optical effect and the inverse mode piezo-o ptical effect of stressed liquid crystals

Fan¹,

Li²,

Xuan³

et al. 2014

Acta Phys. Sin.

View full text Add to dashboard Cite

The concepts of polymer dispersed liquid crystal (PDLC) and stressed liquid crystal (SLC) are introduced; the three kinds of definitions, i.e., “positive piezo-optical effect”, “negative piezo-optical effect” and “inverse mode piezo-optical effect” of PDLC switchable glass are given. The new types of stressed switchable glass samples of negative piezo-optical effect and inverse mode piezo-optical effect are prepared. The experimental results show that the haze is above 90% in a scattering state and the transmittance is nearly 30% in a translucent state. The principle of piezo-optical effect is analyzed with polarization microscopy. The results show that the vertical surface pressure or stretching stress applied to the sample will result in the special reorientation of LC molecules in LC droplets, which causes the optical characteristics of the sample to change significantly. The mode of vertical stretched liquid crystal droplet is proposed, the computation results and graph plotting conform with the results from the micrographs of polarizing microscope very well, so that the experimental phenomena are reasonably explained. The research on SLC piezo-optical effect has the fundamental significance for studying the PDLC and the application value for developing non-electro-optic switchable glass.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Polarization Microscopy Study on Piezo-Optical Effect of Polymer Dispersed Liquid Crystal Films

Cited by 2 publications

References 0 publications

Electro-optical characteristics of holographic polymer dispersed liquid crystal gratings doped with nanosilver

Electro-optical characteristics of holographic polymer dispersed liquid crystal gratings doped with nanosilver

Negative piezo-optical effect and the inverse mode piezo-o ptical effect of stressed liquid crystals

Contact Info

Product

Resources

About