Authors: Marta Comellas-Aragonès; Hans Engelkamp; Victor I Claessen; Nico A J M Sommerdijk; Alan E Rowan; Peter C M Christianen; Jan C Maan; Benedictus J M Verduin; Jeroen J L M Cornelissen; Roeland J M Nolte Journal: Nat Nanotechnol Date: 2007-09-23 Impact factor: 39.213