Related Experiment Video
Updated: Dec 17, 2025
07:03
Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
Published on: August 15, 2018
9.1K
An active carbon-nanotube polarizer-embedded electrode and liquid-crystal alignment
Tae Hyung Kim1, Jong Gil Park, Yul Ki Kim
1Graduate School of Flexible & Printable Electronics, Jeonbuk National University, Jeonju 54896, South Korea.
Nanoscale
|June 26, 2020
Summary
Researchers developed a flexible, transparent polarizer using aligned carbon nanotube (CNT) sheets. This multi-functional material acts as an electrode and liquid-crystal alignment layer, enabling advanced flexible displays.
Area of Science:
- Materials Science
- Optoelectronics
- Nanotechnology
Background:
- Traditional polarizers often lack flexibility and multi-functionality.
- Carbon nanotube (CNT) sheets offer unique optical and electrical properties.
Purpose of the Study:
- To develop a novel active optical polarizer using aligned CNT sheets.
- To evaluate the performance and stability of the CNT-based polarizer for flexible display applications.
Main Methods:
- Fabrication of a horizontally aligned CNT sheet via mechanical stretching.
- Infiltration of a liquid polymer into the CNT sheet followed by UV curing.
- Characterization of polarization efficiency, sheet resistance, and stability through bending tests.
Main Results:
- The polymer-embedded CNT sheet (P-ECS) film achieved 87% polarization efficiency and low sheet resistance (340 Ω□-1).
- The P-ECS film demonstrated excellent liquid-crystal (LC) alignment capabilities.
- High stability was confirmed with minimal variation in resistance (2%) and transmittance (10%) after 1000 bending cycles.
Conclusions:
- The P-ECS film functions as a transparent electrode, polarizer, and LC alignment layer.
- This multi-functional CNT film shows significant potential for active polarizers and flexible displays.
