▎ 摘　　要

NOVELTY - Synthesis of Q-carbon, graphene and diamond involves depositing (7402) amorphous carbon on a substrate, melting (7404) the amorphous carbon into an undercooled state and quenching (7406) the melted amorphous carbon from the undercooled state. USE - Synthesis of Q-carbon, graphene and diamond used as nanodot, nanodiamond, microdiamond, nanoneedle, microneedle or large area single crystal film (all claimed). ADVANTAGE - The method provides Q-carbon having enhanced mechanical, chemical, and physical properties, and enhanced hardness, electroconductivity, room-temperature ferromagnetism, field emission, and electron emission characteristics. Q-carbon is harder than diamond from covalent bond length determinations and has shorter average carbon-carbon length than diamond (less than 0.154 nm) and can also act as semiconductor and exhibit robust ferromagnetism. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart of the process for quenching to form Q-carbon, graphene and diamond. Film depositing process (7402) Film melting process (7404,7408) Melted film quenching process (7406,7410)