NJACS Cecil Brown Lecture

NJACS Cecil Brown Award Lecture presentation by Dr. Louis Brus, Samuel Latham Mitchill Professor of Chemistry, Columbia University.  See attached flyer for further event details.

Event Parking:  Guests may park without permit in Busch Campus Lot #'s 51, 67, 59, 68, and 54.  Directions can be found at http://rudots.rutgers.edu/parkinglots.shtml

Talk Title: "Electron Correlation in Carbon Nanotubes and Graphene"

Abstract: We explore the fundamental nature and dynamics of excited electronic states in graphitic carbon materials.  In semiconducting carbon nanotubes, near-infrared two photon luminescence excitation spectra quantitatively reveal very-strongly-bound exciton excited states.  Electron-electron interactions are compared among CdSe nanocrystals, graphene, and carbon nanotubes.  The independent contributions of screening and dimensionality are analyzed.  Electronic and vibrational degrees of freedom are significantly coupled in graphene.  The metallic versus molecular nature of single sheet graphene is strongly affected by charge transfer  doping by adsorbed molecular species.   Asymmetric doping in bilayer graphene can open a band gap, as revealed by the Raman spectra. Optical absorption bleaching and Raman Fano lineshapes are observed in few layer graphenes very highly doped by adsorbed alkalis.

Louis E. Brus

Professor Brus has a BA from Rice University and a PhD from Columbia University, both in Chemical Physics.  As a Lieutenant in the U. S. Navy, he worked in the solid state and chemistry divisions of the Naval Research Laboratory in Washington DC. In 1973 he joined the research area of Bell Laboratories in Murray Hill, NJ, where he became Distinguished Member of Technical Staff.  He returned to Columbia in 1996, where he is now S. L. Mitchill Professor of Chemistry. He is a member of the US National Academy of Sciences, and in 1998 was the Chairman of the Board of Trustees of the Gordon Conferences. He was originally trained in gas phase spectroscopy and kinetics.  In the 1980s he explored basic ideas and colloidal methods for semiconductor nanocrystals (Qdots) that exhibit quantum size effects. His present interests include carbon nanotubes and graphene, chemical applications of local electromagnetic fields, and solar energy nanoscience. He has received the APS Langmuir Prize, the ACS Chemistry of Materials Prize, the OSA Wood Prize, the inaugural Kavli Prize in Nanoscience, and the NAS Prize in the Chemical Sciences.