938495.fig.002
Figure 2: InAs/CdSe/ZnSe nanoparticles on top of a GaAs substrate. The sharp boarder is determined by the resolution of the e-beam lithography. The nanocrystals are chemically adsorbed to the surface using covalent bonds and therefore stay on the substrate after washing the sample in acetone and toluene. The inset shows the edge line at higher resolution.