Flexoelectric coefficients enhancement via doping carbon nanotubes in nematic liquid crystal host F. Moghadas, J. B. Poursamad, M. Sahrai and M. Emdadi Eur. Phys. J. E, 42 8 (2019) 103 Published online: 13 August 2019 DOI: 10.1140/epje/i2019-11864-1