Amorphous state of <i>sp<sup>2</sup></i> solid carbon
E. F. Sheka, Ye. A. Golubev, Н. А. Попова
Abstract
Two-mode valence electron configuration of carbon atoms lays the foundation of the unique two-mode amorphous state of the carbon solid. From the fundamentals of solid-state physics, sp3 and sp2 amorphous carbons are two different species characterized by conceptually different short-range orders, namely, groups of tetrahedrally bonded sp3 configured atoms and nanoscale size-restricted sp2 graphene domains framed with heteroatom necklaces. Molecular character of sp2 amorphics is provided with chemical reactions accompanying the solids amorphization in due course of the enforced fragmentation.
Topics & Concepts
Amorphous solidAmorphous carbonGrapheneValence electronHeteroatomCarbon fibersValence (chemistry)Materials scienceChemical physicsSolid-stateMolecular solidCrystallographyNanotechnologyAtomic physicsElectronChemistryPhysicsPhysical chemistryMoleculeOrganic chemistryQuantum mechanicsRing (chemistry)Composite materialComposite numberDiamond and Carbon-based Materials ResearchGraphene research and applicationsBoron and Carbon Nanomaterials Research