October 5, 2015 UMD Home FabLab AIMLab

Louis E. Brus

Louis E. Brus


Louis E. Brus, a professor at Columbia University in New York and the winner of the first Kavli prize in Nanoscience, will speak at the University of Maryland on February 1, 2013, at 3 pm.

Prof. Brus' research spans multiple frontiers of the physical chemistry of materials. He is best known for his work on quantum dots, which straddle the physical line between semiconductors and molecules. This unique substance can be used in applications such as transistors, solar cells, LEDs, and diode lasers; as agents for medical imaging; and possibly as qubits in quantum computing.

The presentation is the first NanoColloquium of 2013 from the Maryland NanoCenter, and is also a part of the Distinguished Speaker Seminar Series presented by the College of Mathematical and Natural Science’s Department of Chemistry and Biochemistry.

The session will be held in the Marker Seminar Room of the Chemistry Building (Room 0112) from 3:00-4:00pm.  Light refreshments will be served at 2:30pm.


Abstract by Dr. Brus: Carbon Nanoscience and Electronic Structure

We explore the fundamental nature and dynamics of electrons 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.



Related Articles:
NanoCenter Members Organize Chemistry Meeting

«Previous Story  



Current Headlines

Two NEES students write for DOE Newsletter; one story profiles NEES research

Experts available for comment on upcoming Nobels

UMD Students Win Third Consecutive Electrochemical Society Student Chapter Award

UMD Researchers Creating First Onboard Fast-Charging System for Electric Vehicles

Undergraduate Engineering Programs Earn Top Rank in U.S. News & World Report

Mesoscale Science Research Highlighted on Materials Journal Cover

Microsystems Graduate Student Seminar Series

NSF Funds Novel Research to Create Scalable Wireless Networking, Averting Usage Crisis

UMD Researchers’ New Nanoscale Solar Cells Could Revolutionize Solar Industry

Jeremy Munday selected for NASA Smallsat Technology Partnership Award


Colleges A. James Clark School of Engineering
The College of Computer, Mathematical, and Natural Sciences

Communicate Contact Us
Contact the Webmaster
Follow us on TwitterTwitter logo

Links Privacy Policy

Copyright The University of Maryland University of Maryland