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Hari Srikanth: Functional magnetic nanostructures for electromagnetic and biomedical applications

Wanneer:ma 12-12-2016 15:00 - 16:00

Magnetic nanoparticles are being developed for applications ranging from tunable microwave devices to hyperthermia cancer therapy. Surface functionalization and shape anisotropy of nanoparticles are key factors that govern the magnetic response and can be engineered for these applications. We have shown that uniformly dispersed superparamagnetic ferrite nanoparticles in polymer films could be used for enhancing the performance of RF antennas and other tunable microwave devices [1,2]. In magnetic hyperthermia, there is a need to improve the heating efficiency of conventional biocompatible iron oxide nanoparticles. Our research has shown that one can effectively use strategies that go beyond spherical nanoparticles such as core-shell structures, exchange coupled nanoparticles, nanorods etc. to increase saturation magnetization, anisotropy which directly result in improvement of heating efficiency in magnetic hyperthermia [3,4].

[1] K. Stojak et al., Nanotechnology 22, 135602 (2011)

[2] K. Stojak et al., J. Appl. Phys. 117, 17C723 (2015)

[3] H. Khurshid et al., Sci. Rep. 5, 15054 (2015)

[4] Z. Nemati et al., RSC Advances 6, 38697 (2016)