Chae, Soo Sang Jang, Seunghun Lee, Wonki Jung, Du Won Lee, Keun Ho Kim, Jung Dong Jeong, Dohyeon Chang, Hyunju Hwang, Jun Yeon Lee, Jeong-O. 2024-01-19T21:34:44Z 2024-01-19T21:34:44Z 2021-09-05 2018-09-27 1613-6810 https://pubs.kist.re.kr/handle/201004/120889 Controlled nucleation and growth of metal clusters in metal deposition processes is a long-standing issue for thin-film-based electronic devices. When metal atoms are deposited on solid surfaces, unintended defects sites always lead to a heterogeneous nucleation, resulting in a spatially nonuniform nucleation with irregular growth rates for individual nuclei, resulting in a rough film that requires a thicker film to be deposited to reach the percolation threshold. In the present study, it is shown that substrate-supported graphene promotes the lateral 2D growth of metal atoms on the graphene. Transmission electron microscopy reveals that 2D metallic single crystals are grown epitaxially on supported graphene surfaces while a pristine graphene layer hardly yields any metal nucleation. A surface energy barrier calculation based on density functional theory predicts a suppression of diffusion of metal atoms on electronically perturbed graphene (supported graphene). 2D single Au crystals grown on supported graphene surfaces exhibit unusual near-infrared plasmonic resonance, and the unique 2D growth of metal crystals and self-healing nature of graphene lead to the formation of ultrathin, semitransparent, and biodegradable metallic thin films that could be utilized in various biomedical applications. English WILEY-V C H VERLAG GMBH GOLD NANOPARTICLES THIN-FILMS TRANSPARENCY NUCLEATION DEPOSITION TEMPLATE CLUSTERS THERAPY OXIDE HOPG Ultrathin Metal Crystals: Growth on Supported Graphene Surfaces and Applications Article 10.1002/smll.201801529 1 SMALL, v.14, no.39 SMALL 14 39 scie scopus 000445626600002 2-s2.0-85052796698 Chemistry, Multidisciplinary Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Physics, Condensed Matter Chemistry Science & Technology - Other Topics Materials Science Physics Article GOLD NANOPARTICLES THIN-FILMS TRANSPARENCY NUCLEATION DEPOSITION TEMPLATE CLUSTERS THERAPY OXIDE HOPG crystal growth graphene photothermal effect semitransparent conducting films