Programmable broadband ultrathin micropolarizer based on photoalignment technology.

Sci Rep

Key Laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education and Hunan Provincial Key Laboratory of Low-Dimensional Structural Physics and Devices, School of Physics and Electronics, Hunan University, Changsha, 410082, China.

Published: October 2024

AI Article Synopsis

  • A new method is introduced for making ultrathin azo dye micropolarizers using photoalignment technology combined with liquid crystal polymers to enhance dye organization.
  • The resulting polarizers are only 3.63 μm thick, with impressive performance metrics like an extinction ratio exceeding 140 and over 99.3% polarization efficiency within the 400-650 nm wavelength range.
  • The polarizers are also mechanically stable and durable, making them suitable for use in advanced flexible optoelectronic applications.

Article Abstract

A method for creating broadband ultrathin azo dye micropolarizers is introduced, utilizing photoalignment technology and liquid crystal polymers to organize azo dyes into a long-range ordered structure. Achievements include a 3.63 μm thick polarizer with an extinction ratio over 140 and polarization efficiency over 99.3% across 400-650 nm, 5 μm × 5 μm pixel pitch flexible ultrathin checkerboard arrays and 6 μm pixel pitch flexible ultrathin one-dimensional grating with a 0.45 duty ratio through mask exposure technology. After a substrate-transfer technique, the bending cycle test demonstrates the mechanical stability and durability of the broadband ultrathin flexible polarizers, highlighting their potential for widespread use in integrated flexible optoelectronic systems.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11484834PMC
http://dx.doi.org/10.1038/s41598-024-75095-9DOI Listing

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