| Liquid crystals (LC) doped with Bismuth Ferrite Nanoparticles (BiFeO3) exhibit interesting transmission photonics behaviors. Doped LC has many applications in photonics when it is subjected to time-varying electric fields.;In this thesis, the temperature dependency of transmission through blue phase liquid crystal 4'-Pentyl-4-biphenylcarbonitrile at different wavelengths using a spectrophotometer was investigated. Also, the process steps of doping of 0.05g of 4'-Pentyl-4-biphenylcarbonitrile with 0.0024g of Bismuth Ferrite Nanoparticles (BiFeO3) was developed. A few drops of the 4'-Pentyl-4-biphenylcarbonitrile liquid crystal was placed between two microscope glass slides and a spectrophotometer was used to obtain the spectrum of the liquid crystal under 5 various temperatures with an increment of 10 degrees. The initial and final temperatures were 25 and 65 degrees Celsius, respectively.;The spectrum of the doped liquid crystal obtained shows that at a temperature of 45 degrees Celsius, a maximum transmittance of 95% occurred. Further increase in temperature led to a drop in the transmittance of the doped liquid crystal. |
