Figure 7.

(A) (a) TEM (top) and corresponding SEM picture (bottom) of silica–cobalt ferrite nanocomposite particles (b) Silica growth onto composite particles monitored by TEM, which shows the gradually increasing silica layer thickness from no silica present in picture 1 to a fully grown silica layer in picture 4. (Reprinted with permission from [52] Copyright 2005 American Chemical Society). (B) Magnetoresponsive chondroitin sulfate-functionalized CaCO₃ microparticles. The influence of CSA and magnetic fluid (MF) content on the CaCO₃−MF−CSA composite size, shape, and morphology, as evidenced by SEM (reprinted with permission from [167]. Copyright 2013 American Chemical Society).