Electro-optical dynamic behavior of a nematic liquid crystal lens with added multi-walled carbon nanotubes

A proper amount of 0.02wt.% multi-walled carbon nanotubes (MWCNTs) was added in the nematic liquid crystal (LC). Based on dipolar orientation polarization and space charge polarization conceptions, a simplified theoretical model of the charge transfer complex formed by LC and MWCNTs has been developed and utilized to analyze the dynamic behavior. The driven frequency range was 10Hz-10 KHz. Compared to the applied voltage driven method, focusing time has altered from 2.63 s to 0.096 s, and its response time has reduced to 0.4 s with frequency driven method. The doped LC lens under frequency driven has indicated a significant difference of the performances compared to the pure LC lens under applied voltage driven. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement