Temperature dependent dynamics of multi-responsive hydrogels

Access to the rotational dynamics is essential for magnetic nanoparticles (MNPs) and their use in magnetically-induced hyperthermia, where heat is generated due to the rotation of the MNPs in a medium by exploring them to an alternating magnetic field. By embedding MNPs in a thermo-responsive hydrogel, the structure shrinks with increasing temperature and will change the translational and rotational diffusion of the NPs. Therefore, we propose an experiment to measure these smart magnetic systems' dynamics in dependence on temperature and magnetic field strength using XPCS and XCCA. We want to investigate the translational as well as the rotational dynamics of anisotropic active cobalt ferrite nanoparticles embedded in the smart polymer matrix. We want to clarify the rotational movement of the NPs within the gels by triggering the system with different magnetic field strengths and temperatures. This would enable the control of the smart magnetic system for hyperthermia applications.