Cluster Superlattice Membranes

Author(s)
Tobias Hartl, Moritz Will, Davor Čapeta, Rajendra Singh, Daniel Scheinecker, Virginia Boix de la Cruz, Sophia Dellmann, Paolo Lacovig, Silvano Lizzit, Boris V. Senkovskiy, Alexander Grüneis, Marko Kralj, Jan Knudsen, Jani Kotakoski, Thomas Michely, Pantelis Bampoulis
Abstract

Cluster superlattice membranes consist of a two-dimensional hexagonal lattice of similar-sized nanoclusters sandwiched between single-crystal graphene and an amorphous carbon matrix. The fabrication process involves three main steps, the templated self-organization of a metal cluster superlattice on epitaxial graphene on Ir(111), conformal embedding in an amorphous carbon matrix, and subsequent lift-off from the Ir(111) substrate. The mechanical stability provided by the carbon-graphene matrix makes the membrane stable as a free-standing material and enables transfer to other substrates. The fabrication procedure can be applied to a wide variety of cluster materials and cluster sizes from the single-atom limit to clusters of a few hundred atoms, as well as other two-dimensional layer/host matrix combinations. The versatility of the membrane composition, its mechanical stability, and the simplicity of the transfer procedure make cluster superlattice membranes a promising material in catalysis, magnetism, energy conversion, and optoelectronics.

Organisation(s)
Physics of Nanostructured Materials
External organisation(s)
Universität zu Köln, Lund University, Institute of Physics, Zagreb, Area Science Park
Journal
ACS Nano
Volume
14
Pages
13629-13637
No. of pages
9
ISSN
1936-0851
DOI
https://doi.org/10.1021/acsnano.0c05740
Publication date
10-2020
Peer reviewed
Yes
Austrian Fields of Science 2012
210004 Nanomaterials, 210006 Nanotechnology
Keywords
ASJC Scopus subject areas
Materials Science(all), Engineering(all), Physics and Astronomy(all)
Portal url
https://ucris.univie.ac.at/portal/en/publications/cluster-superlattice-membranes(863bd839-87c7-4c5c-a154-29ec740613fc).html