Abstract
Carbon based materials and clusters can have various structures and properties. Apartfromcrystalline and ordered forms ofcarbon,a wide variety ofdisordered formsofcarbon are there.These disordered or amorphouscarbons are of importance in many applications as well as in basic research. Carbon black and glassy carbon are well known forms of disordered carbon and are widely used in industries. There is also a potential application for disordered carbon as a scatterer material in a low temperature thermal nuclear reactor. Depending on precursor materials and processing parameters, amorphous carbons can have different structures. Investigations from various researchers have revealed a variety ofstructural models fromthe turbostratic model to paracrystalline,schwartzite or quinoidal models. The bonding nature also varies from sp2 to sp3 or a mixture of both. Different techniques are used to characterise these disordered carbons depending on their uses. It includes diffraction studies, microscopy, spectroscopy etc. In this paper an overview on the preparation routes, structural models and characterisation techniques of disordered carbon has been given.
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