Chemical Microscopy Lecture by Prof. Michael Barnes, Univ. of MA - Amherst
- 2/15/2013 | 12:30 PM – 1:30 PM
- Location: Searles Science Building, Room 315
- Event Type: Seminar
- Sponsor: Physics
- Contact: Dominica Lord-Wood
- - Open to the Public -
"Chemical microscopy of nanostructured semiconductors"
Chemical Microscopy, (or chemical imaging) is a newly emerging spectroscopic characterization technique designed to probe details of structure and dynamics at the single molecule level. Because of the spatial resolution limitations in wide-field imaging, the photoluminescence images themselves don't directly convey the desired structural information; that information is actually encoded in the degrees of freedom (wavelength, polarization, correlations in time, etc.) from individual photons. I'll talk about two interesting case-studies in chemical imaging: optical probes of charge-separation in isolated hybrid quantum-dot/conjugated organic nanostructures, and crystalline supramolecular assemblies (nanowires) of a common semiconducting polymer, P3HT.
Michael Barnes, Ph.D.
University of Massachusetts - Amherst