Abstract
The third order nonlinear optical properties and two-photon absorption(TPA) cross-section of nematic liquid crystals (NLCs) (E5CN7) doped with Fe3O4 nanoparticles, single wall carbon nanotubes (SWCNTs) and Fe3O4-CNTs were investigated at 632.8 nm. For this aim, the low power single beam was used in Z-scan technique. The study was performed with two different concentrations of dopant with and without the electric field (15 Volt) and magnetic field (0.5 Tesla). The functionalization of SWCNTs with Fe3O4 diminishes the CNT aggregation while the third order nonlinear susceptibility and TPA cross-section are increased. The results show that the best concentration and dopant in E5CN7 without any applying fields is 1% Fe3O4-CNT. After applying electric and magnetic fields and compare the results, the E5CN7@1% Fe3O4-CNT under electric field exhibits the largest nonlinear responses among all the samples. The direction of external fields with respect to the director axisn→ and then the type of initial alignment are crucial factors for changing the nonlinearity parameters. Furthermore, these results show that E5CN7@1% Fe3O4-CNT may be the promising candidate for the magneto-optical devices.
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
