Figure 2From: Magnetic properties of superparamagnetic nanoparticles loaded into silicon nanotubesTEM images of SiNTs. (A) SiNTs with 10-nm wall thickness - empty; (B) SiNTs with 10-nm wall thickness filled with 4-nm Fe3O4 NPs; (C) SiNTs with 70-nm wall thickness - empty; and (D) SiNTs with 70-nm wall thickness filled with 4-nm Fe3O4 NPs.Back to article page