 The related key patents have been registered in Korea, US, Japan, and China.Hong is also the founder of GSI pioneered the large-scale synthesis of graphene by chemical vapor deposition (CVD), which triggered chemical research toward the practical application of graphene.His first report on CVD synthesis of graphene ("Nature" 2009) has recorded the world highest citations in chemistry among the papers published since 2009 (roughly 5000 times).