Talk: Functional magnetic particles for nanomedicine applications

Joint DTU Energy/Physics Colloquium


Functional magnetic particles for nanomedicine applications



Hari Srikanth

Department of Physics, University of South Florida, Tampa FL, USA

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Magnetic nanoparticles have been building blocks in applications ranging from high density  recording to spintronics and nano-medicine. Magnetic anisotropies in nanoparticles arising from surfaces, shapes and interfaces in hybrid structures are important in determining the functional response in various applications [1]. In this talk, I will first introduce the basic aspects of effective anisotropy and measurements through RF transverse susceptibility experiments. Tuning magnetic anisotropy has a direct impact on the performance of functional magnetic nanoparticles in biomedical applications such as enhanced MRI contrast and magnetic hyperthermia cancer therapy. There is a need to improve the surface functionalization and specific absorption rate (SAR) or heating efficiency of nanoparticles for cancer diagnostics and therapy. Strategies going beyond simple spherical structures, such as exchange coupled core-shell nanoparticles, nanowire, nanotube geometries can be exploited to increase saturation magnetization, effective anisotropy and heating efficiency in magnetic hyperthermia. This talk will combine insights into fundamental physics of magnetic nanostructures along with our recent research advances in their application in cancer therapy and diagnostics in nanomedicine.

1. “Hybrid magnetic nanoparticles as efficient nanoheaters in biomedical applications” (mini-review) -G.C. Lavorato, R. Das, J. Alonso Masa, M.H. Phan and H. Srikanth, Nanoscale Advances 3, 867 (2021)

Hari Srikanth is a Distinguished University Professor at the University of South Florida. He received his Ph.D. in experimental condensed matter physics from the Indian Institute of Science (Bangalore) and has been at USF since 2000 where he directs the Functional Materials Laboratory. His research spans a wide range of topics including magnetization dynamics in nanostructures, applications of magnetic nanoparticles in nanomedicine and RF devices, magnetic refrigeration, spin caloritronics, spin injection and spin polarization and complex oxides with exotic magnetic phases. He has over 280 publications and has given over 200 invited talks around the world. In 2019, he was named as an IEEE Magnetics Society Distinguished Lecturer. Hari is a Fellow of the American Physical Society, Fellow of the Institute of Physics and a Senior Member of IEEE. He currently serves as an Associate Editor for Physical Review B and Editor for Journal of Alloys and Compounds. Hari has been closely involved with the MMM and INTERMAG conferences for more than 17 years serving as Publication Editor, Publication Chair and on program committees. He is the Special Events Chair for the 2022 Joint MMM/INTERMAG conference in New Orleans. He received a Fulbright Scholar Award (2019-2022) to be a visiting professor at Nanyang Technological University in Singapore and is also currently a visiting professor at IIT Bombay. 


Fri 26 Nov 21
10:30 - 11:30


DTU Fysik
DTU Energi


Building 101
Room 3.143
Meeting room 2