自己集合

thumb|upright=1.2|Self-assembly of lipids (a), [[proteins (b), and (c) SDS-cyclodextrin complexes. SDS is a surfactant with a hydrocarbon tail (yellow) and a SO4 head (blue and red), while cyclodextrin is a saccharide ring (green C and red O atoms).]] thumb|upright=1.2|Transmission electron microscopy image of an iron oxide [[nanoparticle. Regularly arranged dots within the dashed border are columns of Fe atoms. Left inset is the corresponding electron diffraction pattern. Scale bar: 10 nm.]] upright=1.2|thumb|Iron oxide nanoparticles can be dispersed in an organic solvent (toluene). Upon its