Optics and Photonics Society of Iran

The structure, orientation and physical properties of liquid crystals can be affected significantly by doping of ferroic (ferromagnetic and ferroelectric) nanoparticles into liquid crystals. Behavior of these suspensions in external fields, depends on anchoring energy, volume fraction of doped nanoparticles, and sign of dielectric anisotropy of liquid crystals as well as relative orientation of director and local polarization of nanoparticles. In this work we find the transition threshold filed (Freedericksz transition) in smectic-A considering ferroelectric nanoparticles at temperature near the transition temperature from smectic-A to smectic-C