[Paper] Estimation of Flexoelectric Coefficients by Means of Transmission Phase Difference of Nematic Liquid Crystal Cells

DOI Web Site 参考文献12件 オープンアクセス
  • Kimura Munehiro
    Department of Electrical, Electronics and Information Engineering, Graduate school of Engineering, Nagaoka University of Technology
  • Fujiwara Daiki
    Department of Electrical, Electronics and Information Engineering, Graduate school of Engineering, Nagaoka University of Technology
  • Ueno Ryuga
    Department of Electrical, Electronics and Information Engineering, Graduate school of Engineering, Nagaoka University of Technology
  • Katsube Daiki
    Department of Electrical, Electronics and Information Engineering, Graduate school of Engineering, Nagaoka University of Technology

抄録

<p>Improvement of the flexoelectric coefficients estimating procedure by means of the transmission phase difference measurement was demonstrated. It was found that the sign of the sum of two flexoelectric coefficients for splay and bend deformation can be determined from the DC applied voltage dependence curve of the phase difference for obliquely incident light. The value of the sum of two flexoelectric coefficient was evaluated by means of symmetric oblique incident transmission ellipsometry (SOITE), and the several pC/m are recognizable by numerical fitting. Subtraction of two flexoelectric coefficients was also estimated with normal incidence measurement under DC applied voltage. From these three step evaluations, two flexoelectric coefficient with accuracy of several pC/m was confirmed for seven of nematic liquid crystals.</p>

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