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(2021) Rodney S Ruoff: CVD graphene: Past, Present, and Future

posted 15 Feb 2021, 11:57 by Peter Boggild   [ updated 9 Mar 2021, 06:48 ]

Director, Center for Multidimensional Carbon Materials (CMCM)
Institute for Basic Science (IBS) Center on the UNIST Campus)
UNIST Distinguished ProfessorDepartments of Chemistry and Materials Science,School of Energy Science and Chemical EngineeringUlsan National Institute of Science & Technology (UNIST)Ulsan 689-798, Republic of Koreahttp://cmcm.ibs.re.kr/http://www.unist.ac.kr/ruofflab@gmail.comhttps://en.wikipedia.org/wiki/Rodney_S._Ruoff

I’ll attempt to present some history of CVD growth of graphene, particularly on metal foils, describe some current research and near-term goals, and then look to the future while outlining several goals that merit consideration. The reader might consider these articles below prior to my presentation. (i) The large area single crystal metal foils (Cu, Ni, Co, Pd, Pt) we make by ‘colossal grain growth’ (Science, 2018: doi.org/10.1126/science.aao3373) allow (ii) growing “truly single layer and single crystal graphene” (no adlayers-no regions having 2 layers, 3 layers, etc.; Advanced Materials 2019: doi.org/10.1002/adma.201903615), (iii) obtaining large area, epitaxial, AB-stacked bilayer graphene on single crystal Cu-Ni(111) foils (Nature Nanotechnology: doi.org/10.1038/s41565-019-0622-8), and using this AB-stacked BLG to make (iv) fluorinated single layer diamond (“F-diamane”, Nature Nanotechnology: doi.org/10.1038/s41565-019-0582-z). (v) Why do wrinkles (and folds) appear in single layer graphene with some metal foil substrates and not others—it’s the interplay between adhesion (friction) and deadhesion (Advanced Materials, 2018: doi.org/10.1002/adma.201706504, Advanced Materials 2019: doi.org/10.1002/adma.201903615; “fold-free single crystal graphene”: submitted). 

The compressive strain we discovered in wrinkle-free (its epitaxial!) single layer graphene on the Cu(111) surface can (vi) ‘drive’ certain chemical reactions that do not occur for wrinkled and “not compressively strained” graphene regions (Advanced Materials, 2018: doi.org/10.1002/adma.201706504; and see more detail in Chemistry of Materials: doi.org/10.1021/acs.chemmater.9b01729). (vii) We invented a method to measure the intrinsic stiffness (that is, Young’s modulus), and the fracture strength and toughness of centimeter-scale single layer graphene (Advanced Materials 2018: doi.org/10.1002/adma.201800888) and so we discuss the meaning of our measured values and of this method of measuring tensile-loading mechanics of macroscale ultrathin samples for future studies. We have (viii) folded an A5 sheet of ultrathin polycarbonate film that is ‘laminated’ to an A5-size sheet of single layer graphene 12 times (for fun!), and 10 times to generate samples whose mechanics we could explore by 3-point bending tests. Significant stiffening, strengthening, and toughening results from the graphene folds embedded in this composite sample that has 210 = 1024 layers of embedded graphene, and 1023 folds (Advanced Materials 2018: doi.org/10.1002/adma.201707449). Support from the Institute for Basic Science (IBS-R019-D1) is appreciated.

Rodney S. Ruoff, UNIST Distinguished Professor (The Departments of Chemistry, Materials Science, and The School of Energy Science and Chemical Engineering), directs the Center for Multidimensional Carbon Materials (CMCM), an Institute for Basic Science Center (IBS Center) located at the Ulsan National Institute of Science and Technology (UNIST) campus. Prior to joining UNIST in 2014, he was the Cockrell Family Regents Endowed Chair Professor at the University of Texas at Austin from September, 2007. He earned his Ph.D. in Chemical Physics from the University of Illinois-Urbana in 1988, and was a Fulbright Fellow in 1988-89 at the Max Planck Institute für Strömungsforschung in Göttingen, Germany. He was at Northwestern University from January 2000 to August 2007, where he was the John Evans Professor of Nanoengineering and director of NU’s Biologically Inspired Materials Institute. He has authored or co-authored about 500 peer-reviewed publications related to chemistry, physics, materials science, mechanics, and biomedical science. Rod is a Fellow of the Materials Research Society, the American Physical Society, the American Association for the Advancement of Science, and the Royal Society of Chemistry. He is the recipient of the 2014 Turnbull Prize from the MRS, the 2016 SGL Skakel Award from the American Carbon Society, the James C. McGroddy Prize for New Materials from the American Physical Society in 2018, and has been named a “Citation Laureate” (Clarivate Analytics) for many years. For further background on some of his research see: http://en.wikipedia.org/wiki/Rodney_S._Ruoff . [If of interest: Google Citation H-index 161, I-10 Index 503, 41 publications cited > 1000 times and 10 > 5000 times. A ‘highly cited researcher’ in Chemistry, Physics, and Materials Science, since such statistics have been reported by Thomson Reuters (and more recently by Clarivate Analytics).]

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