Core-mantle particles constructed of dipoles together with their projections are shown. Each dipole is represented by one cube, green dipoles indicate astronomical silicate and black dipoles indicate amorphous carbon. . The projection shows the distribution of dipoles with different materials in the centre of the aggregate. a) single sphere of core material, b) a single core-mantle particle, c) two separated spheres of core material, d) two separated core-mantle particles, e) two connected spheres of core material, , f) two core-mantle monomers connected, .