Figure 3.

Surfactant-Assisted Self-Assembly and Formation of 3D Superparticles

(A) Schematic representation of the proposed formation mechanism of 3D self-assembly superparticles.

(B) Transmission electron microscopic (TEM) image of oleic-acid-functionalized Fe₃O₄ nanocrystals.

(C) DTAB-Fe₃O₄ nanocrystal micelles.

(D) superparticles made without PVP. (E) superparticles capped with PVP. (F) An enlarged image of the inset in (E). (G) superparticles after annealing at 80°C for 6 h.

Scale bars, 50 nm in (B and C) and 100 nm in (D–G). Reproduced with permission from Wang et al. (Wang et al., 2013a). Copyright 2013 of the Royal Society of Chemistry.