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    Friday, November 9, 2018, at 12:45 p.m.
    Sundin Music Hall, 1531 Hewitt Avenue, Saint Paul

    Mixed-Dimensional van der Waals Heterostructures for Electronic and Energy Applications

    Mark C. Hersam

    2018 Kay Malmstrom Lecture in Physics

    Guest Lecturer: Mark C. Hersam, PhD
    Walter P. Murphy Professor of Materials Science and Engineering and director of the Materials Research Center at Northwestern University

    Layered two-dimensional (2D) nanomaterials interact primarily via van der Waals bonding, which has created new opportunities for heterostructures that are not constrained by epitaxial growth. However, it is important to acknowledge that van der Waals interactions are not limited to interplanar interactions in 2D materials. In principle, any passivated, dangling bond-free surface interacts with another via non-covalent forces. Consequently, the emerging layered 2D nanomaterials can be integrated with a diverse range of other materials, including those of different dimensionality, to form van der Waals heterostructures. This talk will explore mixed-dimensional combinations of 2D + n-D (n = 0, 1 and 3) materials, thus significantly expanding the van der Waals heterostructure concept. In addition, it will explore several fundamental issues, including band alignment, doping, trap states, and charge/energy transfer across previously unexplored mixed-dimensional heterointerfaces.

    About Mark c. Hersam

    Mark C. Hersam is the Walter P. Murphy Professor of Materials Science and Engineering and director of the Materials Research Center at Northwestern University. He also holds faculty appointments in the departments of chemistry, applied physics, medicine, and electrical engineering and computer science. He earned a BS in electrical engineering from the University of Illinois at Urbana-Champaign (UIUC) in 1996, MPhil in physics from the University of Cambridge (UK) in 1997, and a PhD in electrical engineering from UIUC in 2000. His research interests include nanofabrication, scanning probe microscopy, semiconductor surfaces, and nanoelectronic materials. Dr. Hersam has received several honors including the Presidential Early Career Award for Scientists and Engineers, TMS Robert Lansing Hardy Award, AVS Peter Mark Award, MRS Outstanding Young Investigator, U.S. Science Envoy, MacArthur Fellowship, and seven teacher of the year awards. Dr. Hersam is the co-founder of NanoIntegris, which is a commercial supplier of nanoelectronic materials, and an elected member of the National Academy of Inventors. Dr. Hersam is a fellow of MRS, AVS, APS, AAAS, SPIE, and IEEE, and also serves as an Associate Editor of ACS Nano.