New Class of 2-D/1-D Materials and Their Chemical Derivatives: Synthesis, Fundamental Research, and Applications
Sefaattin Tongay, Department of Materials Science and Engineering
University of California, Berkeley
Thursday, January 23, 2014
10:30 a.m.
Goldwater (GWC) 487 [map]
abstract
Two-dimensional (2-D) materials at the quantum confinement limit are emerging as an important class of materials for innovative information, flexible electronics, photonics, and energy conversion technologies [1]. Recent advances in 2-D materials beyond graphene opened our eyes to new class of low-dimensional materials with extraordinary properties ranging from insulating to semiconducting and metallic and even superconducting. 2-D materials enable access to wide range of chemical, optical, magnetic, electrical and mechanical properties that are otherwise unattainable. These materials are not only significantly different compared to their bulk counterparts but also display unusual phenomena due to the much enhanced quantum confinement effect in two-dimensions. In this talk, Sefaattin Tongay will introduce novel ‘2-D materials’ and present recent progress and discoveries made by ‘2-D materials & interfaces’ team he leads at the University of California, Berkeley. Such discoveries include (1) novel synthesis routes to realize large-area 0.7 nm thick monolayer materials, (2) tuning physical properties of 2-D semiconductors by defect engineering, molecular gating, thermal decoupling, (3) unusual
layered materials that behave as if monolayers in the bulk limit, and (4) alloys and vertical heterostructures of 2-D materials. He will address the challenges faced in ‘2-D materials’ community and propose interdisciplinary cutting-edge research program at Arizona State University.
biosketch
Sefaattin Tongay is presently a research scientist in the Department of Materials Science and Engineering at the University of California, Berkeley where he leads the ‘2-D materials & interfaces’ team. He has published 45 SCI-indexed research articles and holds two patents on these subjects. His work received wide media coverage from Nature publications, Scientific American, Science Daily, Phys.org, IOP nanotechweb, Gizmag, and various other media sources. He graduated from Ege University in 2002 with the University and Physics Departmental Honors. He earned his M.Sc. in Physics from Bilkent University in 2004 and Ph.D, in Physics from the University of Florida in 2010. His honors include Tom Scott Memorial award (2009), Presidential scholarships (1998-2002), Ege University Scientific achievement award (2002), Eni awards (nominated/2012), Chinese Academy of Sciences Fellowship Young International Scientist award (decision pending/2013), and various scholarship awards.
