Next Article in Journal
Structure Mediation and Properties of Poly(l-lactide)/Poly(d-lactide) Blend Fibers
Previous Article in Journal
Reversible Stability of Emulsion and Polymer Latex Controlled by Oligochitosan and CO2
Article Menu

Export Article

Open AccessArticle
Polymers 2018, 10(12), 1354; https://doi.org/10.3390/polym10121354

Low-Threshold-Voltage and Electrically Switchable Polarization-Selective Scattering Mode Liquid Crystal Light Shutters

Department of Optics and Photonics, National Central University, 320 Taoyuan, Taiwan
*
Authors to whom correspondence should be addressed.
Received: 12 October 2018 / Revised: 16 November 2018 / Accepted: 30 November 2018 / Published: 6 December 2018
Full-Text   |   PDF [6043 KB, uploaded 6 December 2018]   |  

Abstract

Low-threshold-voltage (Vth) and electrically switchable, polarization-selective scattering mode light shutters (PSMLSs) using polymer-dispersed liquid crystals (PDLCs) are demonstrated in this work. The optimized weight ratio of the nematic liquid crystals (LCs) to the adopted monomer (NBA107, Norland Optics) in the low-Vth PDLCs based on NBA107 is 7:3, [7:3]-PDLCsNBA107. The properties of the low-Vth PDLCsNBA107, such as light-scattering performance, initial transmission, Vth, and droplet size were investigated. Experiment results show that the surface anchoring (threshold-voltage) of NBA107 is weaker (lower) than or equal to that of the common NOA65. The cost is that the response time of the proposed PDLCsNBA107 is relatively long. A method to reduce the decay time, which can be applied to all other PDLC devices, will be elucidated. In addition to the low Vth of the proposed PDLCsNBA107, the operation voltage (~6 Vrms) to approach the maximum transmission is relatively low in a 7 μm-thick PDLCsNBA107 cell. Moreover, the polarization-selective light-scattering performances of the proposed PSMLSs based on the [7:3]-PDLCsNBA107, mainly driven by in-plane and vertical fields, are also demonstrated. View Full-Text
Keywords: liquid crystals; polarization; scattering; polymers liquid crystals; polarization; scattering; polymers
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Liang, Z.-Y.; Tu, C.-Y.; Yang, T.-H.; Liu, C.-K.; Cheng, K.-T. Low-Threshold-Voltage and Electrically Switchable Polarization-Selective Scattering Mode Liquid Crystal Light Shutters. Polymers 2018, 10, 1354.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top