Abstract
Fully leaky optical-guided mode was employed to determine the difference in the splay and bend flexoelectric coefficient (e1–e3) in negative nematic liquid crystal MS-N01300-000. The experimental curves of reflectivity versus internal angle (angle of incident light to the liquid crystal) were obtained when a laser beam passed through the hybrid-aligned nematic in-plane switching liquid crystal cell; the cell was embedded in pyramid-coupled waveguide with different alternating current (AC) and direct current (DC) voltages. The curves of the applied DC with voltage similar to that of AC shift to the left or the right. Experimental results were then compared with theoretical results derived from elastic continuum theory and multi-layer optical theory of liquid crystals. The approximate value of the flexoelectric coefficient (e1–e3) of MS-N01300-000 is 9.0 × 10−11 C/m.
Highlights
A strain-free nematic is invariant with respect to the inversion of its director n to −n
The experimental curves of reflectivity versus internal angle were obtained when a laser beam passed through the hybrid-aligned nematic in-plane switching liquid crystal cell; the cell was embedded in pyramid-coupled waveguide with different alternating current (AC) and direct current (DC) voltages
We explored the flexoelectric coefficient (e1–e3) in negative nematic liquid crystal (LC) MS-N01300-000 by using fully leaky optical-guided mode
Summary
A strain-free nematic is invariant with respect to the inversion of its director n to −n. The sets of the signals of the polarization conservation (pp or ss, which refers to the input polarization and the output, respectively) and polarization conversion (ps or sp) components of both reflectivity (R) and transmittance (T) as functions of internal angle can be detected. These signals are sensitive to the director of LC. We measured the difference in the splay and bend flexoelectric coefficient (e1–e3) in negative nematic LC MS-N01300-000 by using fully leaky optical-guided mode.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
