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.
The structure of negatively curved spongy carbon / G. Benedek, H. Vahedi-Tafreshi, E. Barborini, P. Piseri, P. Milani, C. Ducati, J. Robertson. - In: DIAMOND AND RELATED MATERIALS. - ISSN 0925-9635. - 12:3-7(2003), pp. 768-773. ((Intervento presentato al 13. convegno European Conference on Diamond, Diamond-Like Materials, Carbon Nanotubes, Nitrides and Silicon Carbide (Diamond 2002) tenutosi a GRANADA, SPAIN nel 2002.
|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):||http://dx.doi.org/10.1016/S0925-9635(03)00082-7|
|Appare nelle tipologie:||01 - Articolo su periodico|