About the event
The Rise of Graphene: From Laboratory Curiosity to a Wonder Material for Science and Technology
The luncheon meeting will be at the Southwestern Yacht Club at Point Loma (2702 Qualtrough Street).
The cost for the lunch (and room rental) is $20.00
Each attendee is asked to sign-in when paying.
Graphene, a monolayer of carbon atoms forming a two-dimensional honeycomb lattice structure, has been considered a wonder material for both scientific research and technological applications since its successful isolation in 2004. As a flexible, transparent conductor with intrinsically very high electrical mobility and thermal conductivity, graphene is promising for large-area electronic devices such as touch screen displays, electrodes for photovoltaic cells, interconnects for electrical circuits,and panels for light emitting diodes. Its unique electronic, thermal, magneticand mechanical properties and its compatibility with two-dimensional lithographic techniques are also ideal for many nano-electronic, optoelectronic,spintronic and mechanical applications. Additionally, the super-functional capability of graphene shows great potential for chemical and biological sensing, detoxification and desalination, and energy storage.
Despite all the promising aspects, one of themajor challengesto fully realize the potential of graphene-based technologies is to develop scalable and reliable methods to synthesize high-quality grapheneand graphene-based nanostructures. Much research effort worldwide has been attempted to achieve this objective, but for years it seemed that methods for reliable and high-quality production of graphene could not be used for mass production and vice versa. Since 2015, Professor Yeh’s research group at Caltech has developed breakthrough approaches to achieve scalable and single-step synthesis of 1) large-areamonolayer graphene sheets; 2) large quantity graphene nanostripes with large length-to-width aspect ratios; 3) graphene directly and selectively deposited on nanostructures; and 4) large-area bilayer graphene with controlled twisted angles. All synthesis methods are based on plasma enhanced chemical vapor deposition (PECVD) at room temperaturefor 3 ~ 15 minutes. Detailed investigations of these samples have all confirmed their excellent structural, electrical, chemical and mechanical properties.
In addition to describing the above achievements, Professor Yeh will also describe several exciting research directions in her group at Caltech that are enabled by their successful development of graphene synthesis methods, including nanoscale strain engineering of graphene for novel nano-electronics; graphene as the barrier material for next generation interconnects in ultra-large scale integration (ULSI) for the semiconducting industry; graphene nanostripes for energy storage in supercapacitors and batteries, and for energy conversion in photovoltaic cells.
About the Speaker
Professor Nai-Chang Yeh, Professor of Physics, Fletcher-Jones Foundation Co-Director, Kavli Nanoscience Institute
Dr. Yeh’s principal research field is experimental condensed matter physics, with special emphasis on correlated electronic systems (e.g., high-temperature superconductors, colossal magnetic perovskites), topological matter (e.g., topological insulators and superconductors), spintronics, low-dimensional systems (e.g., graphene, graphene nanoribbons, carbon nanotubes, nanoparticles and quantum dots), nanoscience and nanotechnology, scanning probe microscopy, energy research (e.g., development of photovoltaic and fuel cells, supercapacitors), and precision measurements using superconducting cavity-stabilized oscillators.
Her professor honors include: Eminent Visiting Professor, Universiti Brunei Darussalam (UBD), Brunei (2014–2015); Visiting Chair Professor, Center for Nano and Micro Mechanics (CNMM), Tsinghua University, Beijing, China (2012–2014); Wu Chien-Shiung Distinguished Lectureship, National Central University, Taiwan (2012); Fellow, American Association for the Advancement of Science (2007); Fellow, American Physical Society (2004); Distinguished Alumni Award, Department of Physics, National Taiwan University (2003); Fellow, The Institute of Physics, UK (2001); Achievement Awards, Southern California Chinese-American Faculty Association (2001); Outstanding Young Researcher Award, International Organization of Chinese Physicists and Astronomers (OCPA) (1998); Packard Fellowship for Science and Engineering (1992–1997); and Sloan Research Fellowship (1990–1992).
Professor Yeh has also served on many national and international committees and professional activities. Some of her recent roles include: Handling Editor, Reviews in Physics, Elsevier, The Netherlands, (2015–present); President, International Organization of Chinese Physicists and Astronomers (OCPA) (2013–2014); International Advisor, Tsien Excellence in Education Program (TEEP), Tsinghua University, Beijing, China, (2014–present); Member, International Advisory Committee, Chinese High Magnetic Field Laboratory (CHMFL), (2009–present); Member, International Advisory Board, Taiwan Comprehensive University System, Taiwan (2013–present); Member at Large, Division of Condensed Matter Physics, American Physical Society, USA (2011–2014); Member, Presidential Science Prize Selection Committee (Physical Sciences), Taiwan (2011, 2013, 2015); Member, Presidential Search Committee, National Taiwan University, (July 2012–March 2013); Honorary Member, Institute of Theoretical and Applied Physics, Turkey, (2010–present); Member, Scientific Advisory Board, Center of Electronic Correlations and Magnetism, University of Augsburg, Germany (2008–present); Member, External Advisory Committee, National High Magnetic Field Laboratory (NHMFL), USA, (2004– present).