title: Unexpected electronic properties of micrometer-thick supracrystals of Au nanocrystals.
abstract: We investigated the electronic properties of highly ordered three-dimensional colloidal crystals of gold nanocrystals (7 ± 0.4 nm), called supracrystals. Two kinds of Au supracrystals with typical thicknesses of 300 nm and 5 μm, respectively, are probed for the first time with scanning tunneling microscopy/spectroscopy at 5 K revealing similar power law behavior and showing homogeneous conductance with the fingerprint of isolated nanocrystal. Potential applications evading the size-related risks of nanocrystals could be then considered.
authors.affiliation: Laboratoire des Matériaux Mésoscopiques et Nanométriques (LM2N), UMR CNRS 7070, Université Pierre et Marie Curie (UPMC), bât F, BP 52, 4 place Jussieu, 75252 Paris Cedex 05, France.
authors.forename: Peng
authors.initials: P
authors.lastname: Yang
authors.forename: Imad
authors.initials: I
authors.lastname: Arfaoui
authors.forename: Tristan
authors.initials: T
authors.lastname: Cren
authors.forename: Nicolas
authors.initials: N
authors.lastname: Goubet
authors.forename: Marie-Paule
authors.initials: MP
authors.lastname: Pileni