Many actuators have the limitation of high operating voltage, low actuation force, low mechanical energy density, low conversion efficiency, etc. ultra-high actuation in bulk carbon nanotube (cnt) mat at a very low applied electric field has been demonstrated. the induced strain in this mat has been found to be ~14%, which is many order higher as compared to the existing materials. it can further be enhanced up to ~30% by impinging copper oxide nanoparticles. the ultra-high actuation under low electric field with robustness and durability promises that cnt may be a future material for actuators.