UPDATES

  Making Diamonds at Ambient Pressure - Scientists develop novel liquid metal alloy system to synthesize diamond under moderate conditions - Did you know that 99% of synthetic diamonds are currently produced using high-pressure and high-temperature (HPHT) methods?[2] A prevailing paradigm is that diamonds can only be grown using liquid metal catalysts in the gigapascal pressure range (typically 5-6 GPa, where 1 GPa is about 10,000 atm), and typically within the temperature range of 1300-1600 °C. However, the diamonds produced using HPHT are always limited to sizes of approximately one cubic centimeter due to the components involved. That is—achieving such high pressures can only be done at a relatively small length scale. Discovering alternative methods to make diamonds in liquid metal under milder conditions (particularly at lower pressure) is an intriguing basic science challenge that if achieved could revolutionize diamond manufacturing. Could the prevailing paradigm be challen… 작성자 : CMCM 2024.04.25

 “관심 분야, 창의적 해결하는 게 ‘일류’ 되는 길” 로드니 루오프 UNIST 특훈교수 피인용 세계 상위 1% 연구자 선정 8년째 화학·재료과학 2분야 등재 Check out the original post, here  Post credit goes to 서울신문, 유용하 기자   작성자 : CMCM 2022.04.05

 IBS 과학자 8명, 피인용 세계 상위 1% 연구자(HCR)로 선정 - 국내 HCR 47명 발표…로드니 루오프·현택환 단장 8년 연속 선정 - 올해 세계에서 가장 영향력 있는 연구를 펼친 연구자 명단에 기초과학연구원(IBS, 원장 노도영) 소속 8명의 연구자가 이름을 올렸다.  글로벌 학술정보서비스 분석기업 클래리베이트 애널리틱스(이하 클래리베이트)가 16일 발표한 ‘2021 피인용 세계 상위 1% 연구자(Highly Cited Researcher ·HCR)’에 따르면 2021년 국내 HCR 47명(중복분야 포함 55명) 중 IBS 소속 연구자는 8명(중복분야 포함 10명)으로 확인됐다. 국내 연구기관 및 대학 중에서는 서울대(11명)에 이어 두 번째로 많은 숫자다. 클래리베이트는 22개 연구 분야에서 최근 11년간 피인용 횟수가 상위 1%에 해당하는 논문(Highly Cited Papers)을 발표하고, 동료 연구자들에게 중요한 영향을 미친 연구자들을 HCR로 선정한다. 올해는 전 세계 70여 개국 총 6,602명의 연구자가 HCR로 선정됐다. 로드니 루오프 단장(다차원 탄소재료 연구단)과 현택환 단장(나노입자 연구단)은 화학과 재료과학의 2개 분야에 중복 선정되며 8년 연속(2014~2021년) HCR 명단에 이름을 올렸다. 이 외에도 장석복 단장(분자활성 촉매반응 연구단‧화학)은 7년 연속(2015~2021년), 김진수 단장(유전체 교정 연구단·생물학 및 생화학), 이영희 단장(나노구조물리 연구단·크로스 필드), 악셀 팀머만 단장(기후물리 연구단·환경 및 생태학), 김대형 부연구단장(나노입자 연구단·재료과학), 강기석 연구위원(나노입자 연구단·크로스필드)은 4년 연속 HCR로 선정됐다. 현재까지 총 12명의 IBS 소속 연구자가 HCR로 선정됐다. 노도영 원장은 “IBS는 개원 이후 지난 10년간 장기·안정 지원 철학과 좋은 연구 환경을 앞세워 세계적 과학자들을 모았고, HCR을 비롯한 세계 Top 1% 과학자들이 모여… 작성자 : CMCM 2021.11.17

 Ultra-Large Single-crystal WS2 Monolayer -New technique opens a possibility to replace silicon with 2D materials in semiconducting technology- As silicon based semiconducting technology is approaching the limit of its performance, new materials that may replace or partially replace silicon in technology is highly desired. Recently, the emergence of graphene and other two-dimensional (2D) materials offers a new platform for building next generation semiconducting technology. Among them, transition metal dichalcogenides (TMDs), such as MoS2, WS2, MoSe2, WSe2, as most appealing 2D semiconductors.  A prerequisite of building ultra-large-scale high-performance semiconducting circuits is that the base materials must be a single-crystal of wafer-scale, just like the silicon wafer used today. Although great efforts have been dedicated to the growth of wafer-scale single-crystals of TMDs, the success was very limited until now. Distinguished Professor Feng Ding and his research team … 작성자 : CMCM 2021.11.17

 Creation of the Most Perfect Graphene New discovery allows for scalable production of fold-free and ad-layer free single-crystal graphene A team of researchers led by Director Rod Ruoff at the Center for Multidimensional Carbon Materials (CMCM) within the Institute for Basic Science (IBS), including graduate students at the Ulsan National Institute of Science and Technology (UNIST), have achieved growth and characterization of large area, single-crystal graphene that has no wrinkles, folds, or adlayers. It can be said to be the most perfect graphene that has been grown and characterized, to date.  Director Ruoff notes, “This pioneering breakthrough was due to many contributing factors, including human ingenuity and the ability of the CMCM researchers to reproducibly make large-area single-crystal Cu-Ni(111) foils, on which the graphene was grown by chemical vapor deposition (CVD) using a mixture of ethylene with hydrogen in a stream of argon gas.” Student Meihui Wang, Dr. Ming … 작성자 : CMCM 2021.08.26

  Dr. Rodney Ruoff delivers the ECS Lecture on May 31 The ECS Lecture at the Plenary Session of the 239th ECS Meeting with IMCS18 will be delivered by Dr. Rodney Ruoff, Distinguished Professor in the Departments of Chemistry and Materials Science, and the School of Energy Science and Chemical Engineering at the Ulsan National Institute of Science and Technology (UNIST), South Korea, and Director of the Center for Multidimensional Carbon Materials (CMCM). The Plenary Session is from 2100-2200h EST on Monday, May 31, after which the content will be available through June 26, 2021. The 239th ECS Meeting with IMCS18 takes place in a digital format. There is no cost to participate, however pre-registration is required. ECS Lecture  For more than 50 years, notable leaders in the fields of electrochemistry and solid state science—including numerous Nobel Laureates—have presented the ECS Lecture. In his presentation, “Carbon Materials,” Dr. Ruoff discusses the intimate connection between … 작성자 : CMCM 2021.05.25