Nonlinear Magneto-Electro-Mechanical Response of Physical Cross-Linked Magneto-Electric Polymer Gel

This work reports on a novel magnetorheological polymer gel with carbon nanotubes and carbonyl iron particles mixed into the physical cross-linked matrix. The resulting composites show unusual nonlinear magneto-electro-mechanical responses. Because of low matrix viscosity, effective conductive paths formed by CNTs were mobile high-performance sensing characteristics observed. In particular, due to transient mutable bonds in gel, electromechanical behavior acted rate-dependent manner. External stimulus at high rate significantly enhanced electrical resistance response during mechanical deformation. Meanwhile, rheological properties regulated external magnetic field when added. dual enhancement mechanism further contributes active control performance. These could be adopted as sensitive sensors measure impact vibration under different frequencies. There is great potential for this application intelligent controls.