Novel magnetic vortex nanorings/nanodiscs: Synthesis and theranostic applications

Liu Xiao-Li^a),^b), Yang Yong^a), Wu Jian-Peng^b), Zhang Yi-Fan^b), Fan Hai-Ming^b), Ding Jun†^a)

(a) (top) Typical synthesis of magnetic nanorings; (bottom) SEM image and HRTEM of prepared Fe₃O₄ nanorings; inset is a selected area electron diffraction (SAED) image^{[ 64 ]} Reprinted with permission from Ref. [ 64 ], © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. (b) (top) Schematic illustration for the synthesis of Fe₃O₄ nanodiscs;^{[ 59 ]} (bottom) SEM image and HRTEM of prepared Fe₃O₄ nanodiscs; inset is an SAED image^{[ 59 ]} Reprinted with permission from Ref. [ 59 ], © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.