Researchers from several institutions. including the University of Nottingham, University of Warwick and Diamond Light Source, have developed a novel approach to controlling structural defects in graphene, enhancing its functionality for a range of technological applications.
Using a one-step chemical vapor deposition process, the scientists have grown graphene films from azupyrene – a molecule designed to mimic the defects known as Stone-Wales defects, which consist of adjacent five- and seven-membered carbon rings instead of graphene’s typical six-membered arrangement. By adjusting the growth temperature on a copper substrate, the concentration of these defects can be precisely controlled: higher temperatures yield graphene closer to its ideal, defect-free lattice, while lower temperatures facilitate the intentional inclusion of defects.
Researchers from several institutions. including the University of Nottingham, University of Warwick and Diamond Light Source, have developed a novel approach to controlling structural defects in graphene, enhancing its functionality for a range of technological applications.Using a one-step chemical vapor deposition process, the scientists have grown graphene films from azupyrene – a molecule designed to mimic the defects known as Stone-Wales defects, which consist of adjacent five- and seven-membered carbon rings instead of graphene’s typical six-membered arrangement. By adjusting the growth temperature on a copper substrate, the concentration of these defects can be precisely controlled: higher temperatures yield graphene closer to its ideal, defect-free lattice, while lower temperatures facilitate the intentional inclusion of defects.
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