This work reports on the production and characterization of a novel form of nanostructured carbon consisting of three-dimensional, fully connected sp2 networks. This form of carbon is characterized by interconnected thin layers forming a spongy structure with meso- and macroporosity. The spongy carbon is produced by a pulsed microplasma cluster source in the presence of a metal-organic catalyst and it can be deposited as a film by supersonic cluster beam deposition (SCBD). Unlike fullerenes, nanotubes and graphite, which consist of zero-, one- or two-dimensional covalent objects held together by van der Waals' forces, this novel structure consists of a robust, multiply connected graphene sheet which is fully covalent in three dimensions. Theoretical analysis indicates that such carbon sponges apparently grow as minimal surfaces and have the long-sought topological structure of random schwarzites.
|Titolo:||The structure of negatively curved spongy carbon|
|Settore Scientifico Disciplinare:||Settore FIS/03 - Fisica della Materia|
|Data di pubblicazione:||2003|
|Digital Object Identifier (DOI):||10.1016/S0925-9635(03)00082-7|
|Appare nelle tipologie:||01 - Articolo su periodico|