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Temperature dependent relative mass density measurement of a highly polar liquid crystal compound having multiple ferroelectric nematic phases.

POSTER

Abstract

The relative mass density measurement can represent both the polarity and the efficient molecular packing of a particular liquid crystal material. We studied the temperature dependence of the relative mass density of a new highly polar ferroelectric nematic compound, 4-nitrophenyl 4-[(2,4-dimethoxylbenzoyl) oxy]-2-fluorobenzoate (RT11001) that was found to have 3 different ferroelectric nematic phases (arXiv:2104.06520).  A section of the 50 rectangular capillary was filled with the material and studied by polarized optical microscopy (POM) images for the better definition of the meniscus position. The temperature dependence of the relative mass density reveals the N-NF1 and NF1-NF2 transitions seen by differential scanning calorimetry (DSC) but does not show any jump through the NF2-NF3 phase transitions. These results can be understood in view of recent x-ray scattering results (Multiple ferroelectric nematic phases of a highly polar liquid crystal compound, submitted to Journal of Materials Chemistry C - TC-ART-08-2021-003587).

Publication: Multiple ferroelectric nematic phases of a highly polar liquid crystal compound, submitted to Journal of Materials Chemistry C, Manuscript ID - TC-ART-08-2021-003587.

Presenters

  • Md Sakhawat Hossain

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

Authors

  • Md Sakhawat Hossain

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

  • Rony Saha

    Department of Physics and Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA, Kent State University

  • Pawan Nepal

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

  • Chenrun Feng

    Kent State University, Materials Science Graduate Program and Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA, Lawrence Berkeley National Laboratory

  • James T. Gleeson

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

  • Samuel Sprunt

    Department of Physics and Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA, Kent State University

  • Robert J. Twieg

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

  • Antal I Jakli

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