Studies on phase transitions and dielectric properties of biowaste synthesized porous carbon nanoparticles – ferroelectric liquid crystal mixture

Abstract

Ferroelectric liquid crystals(FLCs), an exciting class of liquid crystals(LCs), found potential applications in the display as well as non-display regimes due to their fast response, low driving voltage and nonvolatile memory. The amalgamation of nanoparticles into FLCs has opened up new avenues in the LCs research field by alterations/modification of the existing properties of LCs. In this work, porous carbon nanoparticles (PCNPs) were dispersed into FLC mixture (W206E) and investigated their doping effect on FLC’s textural, phase transition temperatures and dielectric studies in planar-aligned cells. Dielectric spectroscopy was carried out in the frequency range of 20 Hz to 10 MHz to explore the frequency as well as the temperature dependent of FLC in the entire SmC* region. The transition temperature of FLC mixture is increased by 4 °C in PCNPs doped FLC sample then undoped FLC sample. Nearly 8.42% increase in permittivity is observed. A Gold stone relaxation mode at ∼627 Hz was observed at lower frequency.

Keywords:

• Ferroelectric liquid crystal
• porous carbon nanoparticles
• dielectric permittivity
• dielectric strength

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The work was also support under CRG scheme of DST, Delhi project (CRG/2022/007362) at Dr. B R Ambedkar National Institute of Technology Jalandhar.