Nanotechnology Conference and Trade Show - Nanotech 2006
> Program > Technical Conferences > Business & Development > Nano Impact Workshop > Nanotech Job Fair > Expo
Index of Authors
Index of Keywords
Confirmed Speakers
Conferences & Symposia

Conference Proceedings

Conference Technical Proceedings

New manganite-based mediators for self-controlled magnetic hyperthermia

O.A. Shlyakhtin, Y-J Oh, V.G. Leontiev and A.A. Kuznetsov
Institute of Biochemical Physics, Russian Academy of Sciences, RU

magnetic hyperthermia, manganites, nanopowders, smart materials

In order to develop alternative magnetic mediator materials, RF heating properties of several doped La manganites were studied. Aqueous suspensions of La-Sr, La-Ag and La-Na manganite powders with Tc = 320-340 K, obtained by freeze drying synthesis method, demonstrated the efficient RF absorption at room temperature. At the temperatures approaching Tc a steep decrease of the heating rate was observed followed by the temperature stabilization. RF absorption intensity of several manganite powders with crystallite size ~ 0.1 microns was comparable with that one of traditional ferrofluids, demonstrating little or no dependence on the particle agglomeration. Essential feature of these materials is systematic dependence of Tc on the La/Me ratio that makes possible fine and reproducible control of the final temperature. Apart from other kinds of magnetic mediators, manganites demonstrated rather limited dependence of the final temperature on the concentration of mediator particles. This feature prevents possible local overheating, occurred in usual Fe3O4-based ferrofluids, and allows to consider doped La manganites as a new class of smart mediators for magnetic hyperthermia and other biomedical applications demanding contactless heating with autonomous temperature control.

Back to Program

Sessions Sunday Monday Tuesday Wednesday Thursday Authors

Nanotech 2006 Conference Program Abstract

Nanotechnology Conference | Terms of use | Privacy policy | Contact | NSTI Home
Program | Technical Conferences | Business & Development | Nano Impact Workshop | Nanotech Job Fair | Expo |
Nanotech 2006 Home | Press Room | Venue | Subscribe | Site Map
Names, and logos of other organizations are the property of those organizations and not of NSTI.
This event is not open to the general public and NSTI reserves the right to refuse admission and participation to any individual.