“9.61x6.69” b2815 Tissue Engineering and Nanotheranostics
Magnetic Nanohybrids for Magnetic Resonance Imaging 127
Fig. 18. (a) Schematic description of the formation of Ag-based dumbbell nanopar-
ticles at the liquid/liquid interface. HRTEM images of (b) the Ag–Fe 3 O 4 , (c) Ag–
FePt and (d) Ag–Au plasmonic–magnetic and plasmonic–plasmonic hybrid
nanoparticles. Reprinted with permission from Ref. 90.^
In the synthesis of Fe 3 O 4 –Au–Fe 3 O 4 structure, Au–Fe 3 O 4 solution
was heated in the existence of sulfur. Sulfur played a very important
role in the fabrication and acted as a glue to combine two AuNPs. It
is fascinating that in the preparation of triple-domain nanoparticles,
the combination or “tug-of-war” phenomena is observed through the
metal particles. Apart from lattice mismatching property, it is also
related to special characteristics of metals as compared to oxides and
semiconductor chalcogenides materials. Similar kind of phenomena
was observed by Schaak et al. during the synthesis of Fe 3 O 4 –Pt–Ag
and Ag–Fe 3 O 4 –Pt as shown in Fig. 19(c).^96
3. Applications of Magnetic Nanohybrids
Recently, cancer therapy has been improved by various scientific
disciplines to facilitate the control on cancer diseases. Several
