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IBS CENTER FOR MULTIDIMENSIONAL CARBON MATERIALS
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Bilayer Graphene Converted to Single-layer Diamond-like Material upon Fluorination
Research published in Nature Nanotechnology shows that diamond and graphite are just a few chemical reactions apart. A research team led by Rodney S. Ruoff of Ulsan National Institute of Science and Technology in South Korea has demonstrated conversion of large-area bilayer graphene to F-diamane—an ultrathin, fluorinated diamond-like material—under non-extreme temperature and pressure conditions upon fluorination. “The conversion from bilayer AB-stacked graphene to the thinnest possible diamond-like material is indeed possible without using extreme conditions, like high pressure,” says Pavel Bakharev, a research fellow in physics at the Center for Multidimensional Carbon Materials (CMCM) at the Institute for Basic Science in Ulsan, South Korea, and lead author of the findings. “[There have been] multiple theoretical papers on this conversion, but until now, it [has never been shown] experimentally.” (Top): Optimized models of bilayer graphene and fluorinated monolayer diamond (… 작성자 : CMCM 2020.01.28
A Tech Jewel: Converting Graphene into Diamond Film
 A tech jewel: Converting graphene into diamond film - Synthesis of the thinnest possible diamond-like material starting from bilayer graphene and without high pressure - Can two layers of the “king of the wonder materials,” i.e. graphene, be linked and converted to the thinnest diamond-like material, the “king of the crystals”? Researchers of the Center for Multidimensional Carbon Materials (CMCM) within the Institute for Basic Science (IBS, South Korea) have reported in Nature Nanotechnology the first experimental observation of a chemically induced conversion of large-area bilayer graphene to the thinnest possible diamond-like material, under moderate pressure and temperature conditions. This flexible, strong material is a wide-band gap semiconductor, and thus has potential for industrial applications in nano-optics, nanoelectronics, and can serve as a promising platform for micro- and nano-electromechanical systems.  Diamond, pencil lead, and graphene are made by the same bu… 작성자 : CMCM 2019.12.11
IBS 과학자 7인, 세계에서 가장 영향력 있는 연구자로 선정
 IBS 과학자 7인, 세계에서 가장 영향력 있는 연구자로 선정 클래리베이트 애널리틱스 발표…역대 국내 HCR 중 13%가 IBS 소속 IBS 전경사진 ▲ 클래리베이트 애널리틱스가 선정한 2019 HCR에는 IBS 소속 연구자 7명이 이름을 올렸다. 지금까지 HCR로 선정된 IBS 연구자는 총 11명이다. 올 한해 세계에서 가장 영향력 있는 연구를 펼친 연구자 명단에 기초과학연구원(IBS) 소속 7명의 연구자가 이름을 올렸다.  글로벌 학술정보서비스 분석기업 클래리베이트 애널리틱스가 20일 발표한 ‘2019 세계에서 가장 영향력 있는 연구자(Highly Cited Researcher·HCR)’에 따르면 2019년 국내 HCR 41명(중복수상 포함 45명) 중 IBS 소속 연구자는 7명(중복수상 포함 9명)으로 확인됐다. 국내 소속기관 중에서는 서울대(9명)에 이어 두 번째로 많은 HCR 연구자를 배출했다.  클래리베이트는 매년 각 분야에서 해당 연도에 가장 많이 인용된 상위 1% 논문(Highly Cited Papers)을 작성한 연구자를 HCR로 선정하고 있다. HCR은 논문의 피인용 횟수를 근거로 선정되기 때문에 세계 각지의 동료 연구자들에게 인정을 받은 연구자라는 의미가 있다. 6년째를 맞은 올해는 22개 분야에서 60여 개국 총 6,216명의 연구자가 HCR로 선정됐다.  로드니 루오프 단장(다차원 탄소재료 연구단)과 현택환 단장(나노입자 연구단)은 화학/재료과학의 2개 분야에 중복 선정되며 올해로 6년 연속 HCR 명단에 이름을 올렸다. 한편, 장석복 단장(분자활성 촉매반응 연구단)은 화학 분야에서 5년 연속 선정됐다. 이와 함께 생물학 및 생화학 분야에서는 김진수 단장(유전체 교정 연구단), 크로스필드 분야에서는 이영희 단장(나노구조물리 연구단)과 악셀 팀머만 단장(기후물리 연구단), 재료과학 분야에서 김대형 부연구단장(나노입자 연구단)이 작년에 이어 올해도 HCR로 선정됐다. 지금까지 총 11명의… 작성자 : CMCM 2019.11.26
Charge transfer, the secret weapon of liquid gallium
CMCM Research Update Charge transfer, the secret weapon of liquid gallium -Understanding the interactions between Gallium and Hydrogen- The Materials group at the Center for Multidimensional Carbon Materials directed by UNIST Distinguished Professor Rodney S. Ruoff, within the Institute for Basic Science (IBS), have discovered a large transfer of charge from metal atoms to both hydrogen molecule and hydrogen atoms – a result with potential significance in utilizing hydrogen as clean energy source, as well as in chemical synthesis. These findings were based on their observations from computer simulations of a hydrogen – liquid gallium system held at 100 °C.   Metals are materials that can conduct electricity and heat. They are commonly thought of as shiny solids, but can also exist as liquids. A well-known example of a liquid metal is mercury. Liquid metals find a wide variety of potential uses. For example, there are a growing number of studies of their use as reaction solvents… 작성자 : CMCM 2019.11.19
Compressive Stress in Single Crystal Graphene Drives Chemistry on the Graphene Surface / 다재다능한 그래핀 쉽게 만드는 비결, ‘스트레스’에 있다
 Compressive Stress in Single Crystal Graphene Drives Chemistry on the Graphene Surface Researchers synthesize a new 2D Metal Organic Framework with an ever-growing list of possible applications Chemical vapor deposition (CVD) growth of graphene on metal substrates, especially on copper (Cu) foils, is an effective and popular technique to synthesize graphene approaching perfect crystallinity. Covalent chemical functionalization of defect-free (and thus the most chemically inert) graphene on Cu with deliberately chosen appending groups is not only fundamentally important for understanding its chemistry, but also for tailoring its structures and properties, and could be beneficial in practical uses such as for electrochemical sensors, optical devices, non-corroding current collectors, and as electrodes in electrical energy storage systems, among other reasons. The chemical reactivity of graphene on Cu foil substrates is a currently a topic of fundamental scientific study. ▲ Fi… 작성자 : CMCM 2019.11.08
Novel Sponge-like 2D Material with Interesting Electrical Conductivity and Magnetic Properties  / 에너지 저장장치 성능 향상시킬 ‘히든카드’ 발견
  Novel sponge-like 2D material with interesting electrical conductivity and magnetic properties Researchers synthesize a new 2D Metal Organic Framework with an ever-growing list of possible applications Chemists at the Center for Multidimensional Carbon Materials (CMCM), within the Institute for Basic Science (IBS, South Korea), have reported the synthesis of a novel type of 2D metal organic framework (MOF) with interesting electrical conductivity and magnetic properties. Published in the Journal of the American Chemical Society, this new material may potentially contribute to optoelectronics, photovoltaics, (photo)electrocatalysis, and energy storage.  Also known as sponge-like or Swiss-cheese-like materials, MOFs are made of metal ions connected to organic ligands and are characterized by nano-sized holes. IBS researchers in collaboration with the School of Materials Science at the Ulsan National Institute of Science and Technology (UNIST) designed and synthesized Ni(II) tet… 작성자 : CMCM 2019.10.31