Chemical functionalization of carbon nano tubes is a very hot topic as it is considered now as one of the key step for the fabrication of tube based electronic devices. By nature, carbon nanotubes are chemically quite inert and thus defects are required as seed for the growth of functional layers. In a recent simulation study Anja shows now, how the first steps of aluminum oxide atomic layer deposition can be performed on typical CNT defects [bibcite key=forster2017ab].