Effect of electro-mechanical coupling on actuation behavior of a carbon nanotube cellular structure

Influence of magnetic field on the compressive behavior of carbon nanotube with magnetic nanoparticles

“…This change in modulus clearly indicates the modification in the CNT mat microstructure by applying magnetic field. These results potentially relate the mechanical behavior of the CNT in their cellular structure with the applied magnetic field, as similar to the results reported by Jagtap et al 24 In this report, we have revealed that under magnetic field the mechanical behavior of CNT mat modifies to enhance its energy absorption capacity. The presence of magnetic nanoparticles on the surface of the CNT causes the alignment of the CNT along the direction of the applied magnetic field.…”

Highly compressible behavior of polymer mediated three-dimensional network of graphene foam

“…in several studies. [16][17][18] These studies have evaluated the mechanical behavior of CNT under both static and dynamic impacts for cushioning, actuators, shock absorbers, and dampers. [19][20][21] Although CNT has demonstrated excellent energy absorbing capability 22 its entangled microstructure means there is little control over its structural characteristics, which are crucial parameters for compressive studies.…”

Strain relaxation and resonance of carbon nanotube forests under electrostatic loading

“…An electrostictive effect might add to the actuation by causing CNTs to elongate as they are polarized. This effect was investigated theoretically for individual CNTs [52,53,54] and recently was studied experimentally on CNT forests by placing them in direct contact between a pair of electrodes held at a potential dif-ference and optionally within a liquid electrolyte [55,56]. However, the electrostrictive effect was observed under strains significantly larger than those exist in the present study ( Fig.…”

“…Therefore, we conclude that the force applied in our experiments is dominated by the capacitive effect. Also, unlike the cited works [55,56], our experiments involve non-contact application of the electric field. As a result, the magnitude of the electrostatic pressure is inversely proportional to the electrostatic gap, and the highest stress exists at the top of the CNT forest, Fig.…”