MSE Colloquium: Dr. Joshua Goldberger, Surface Chemistry and Anisotropy in Layered Materials

Associate Professor, Dept. of Chemistry, The Ohio State University

All dates for this event occur in the past.

264 MacQuigg Labs
105 W. Woodruff Ave
Columbus, OH 43210
United States

Abstract

Two-dimensional materials represent an intriguing class of materials in which both surface functionalization and solid-state chemistry can be uniquely exploited to systematically design competitive electronic, topological insulating, and catalytic properties.   First, we will discuss our recent work on ligand-terminated group 14 graphane analogues. We will show the extent to which the electronic structure can be tailored using surface functionalization chemistry. Furthermore, we will highlight how the surface chemistry can lead to nonobvious interactions with other chemical species. Next, we will discuss our efforts in understanding how to control the anisotropic thermoelectric behavior in layered materials. We have discovered that NaSn2As2, an exfoliatable van der Waals Zintl phase, simultaneously exhibits p-type behavior in-plane and n-type behavior along the cross-plane direction.  We will establish the origin of this phenomenon, show that it occurs in numerous layered materials, and discuss how it can be exploited to create new classes of electronic and thermoelectric devices.  

Bio

Josh Goldberger received his B.S. in chemistry from The Ohio State University in 2001. He received his Ph.D. in chemistry from the University of California at Berkeley with Professor Peidong Yang in 2006, as an NSF graduate fellow. He then did his postdoctoral research with Professor Sam Stupp at Northwestern University as part of the Institute for BioNanotechnology in Medicine, as an NIH-NRSA postdoctoral fellow (2007-2010).  He has received many awards, including an MRS Graduate Student Finalist Award in 2003, an IUPAC Prize for Young Chemists in 2007, and a Camille Dreyfus Teacher-Scholar Award in 2015. He joined The Ohio State University Chemistry Department in August of 2010, and was promoted to Associate Professor in 2016.