Reflection Color Tuning of Chiral Ferroelectric Nematic Liquid Crystals at Room Temperature

ORAL

Abstract

Recently low electric field tuning of the selective reflection color of chiral NF (NF*) materials at high temperatures was demonstrated. [1] Although most of the synthesized NF materials are at elevated temperatures, by now there are a few room-temperature NF* mixtures that we studied here to find out if their reflection color can also be tuned by low electric fields. Both low field-induced wavelength tuning, and intensity modulation are achieved at room temperature. The reflection color can be tuned up to ~150 nm by less than 0.03 V/µm DC electric fields and 0.10 V/µm AC 100Hz sinusoidal electric fields. Strong reflection intensity modulations usually accompany the color tuning or in certain conditions they happen without tuning. These observations might be useful in making battery powered full-color reflective liquid crystal displays or in AR/ VR applications.

Reference

[1] Feng, C., Saha, R., Korblova, E., Walba, D., Sprunt, S. N., & Jákli, A. (2021). Electrically tunable reflection color of chiral ferroelectric nematic liquid crystals. Advanced Optical Materials, 9(22), 2101230.

* This work was supported by NSF DMR 2210083.

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Presenters

  • Md Sakhawat Hossain Himel

    Advanced Materials and Liquid Crystal Institute,Kent State U, Materials Science Graduate Program and Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242, USA

Authors

  • Md Sakhawat Hossain Himel

    Advanced Materials and Liquid Crystal Institute,Kent State U, Materials Science Graduate Program and Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242, USA

  • Kelum Perera

    Kent State University, Department of Physics, Kent State University, Kent, Ohio 44242, USA

  • Alex O Adaka

    Materials Science Graduate Program, Kent State University,, Materials Science Graduate Program and Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, Ohio 44242, USA

  • Parikshit Guragain

    Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44242, USA, Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44242, USA

  • Robert J. Twieg

    Department of Chemistry and Biochemistry, Kent State University, Kent, OH 44242, USA, Kent State University, Department of Chemistry and Biochemistry, Kent State University, Kent, Ohio 44242, USA

  • ANTAL I JAKLI

    Department of Physics, Kent State University, Kent State University, Materials Sciences Graduate Program and Advanced Materials and Liquid Crystal Institute, Department of Physics, Kent State University, Kent, Ohio 44242, USA