2014 Fall Physics Colloquium Series: Dmitri V. Voronine, Ph.D.

DateOctober 15, 2014Time4:00 - 5:00 pm
LocationBaylor Sciences Building, Room E.125
Description
Dmitri V. Voronine, Ph.D.
Texas A&M University, Baylor University

Nature of Surface-Enhanced Raman Scattering

Detecting signals from single molecules is a Nobel endeavor [1]. Raman spectroscopy is a fantastic and exquisite method for identifying molecules via their vibrational fingerprints [2-5]. The sensitivity can be enhanced many orders of magnitude by placing a molecule on the surface of a noble metal nanoparticle. This surface-enhanced Raman scattering (SERS) spectroscopy has been demonstrated but its nature has not been completely understood. This talk will reveal the role of the enhancement mechanisms and the possibility of using quantum coherence to further enhance the sensitivity beyond the state-of-the-art analytical technology.

1. Nobel Prize in Chemistry (2014).

2. D. V. Voronine, et al., Time-resolved surface-enhanced coherent sensing of nanoscale molecular complexes, Sci. Rep. 2, 891 (2012).

3. X. Hua et al., Nature of surface-enhanced coherent Raman spectroscopy, Phys. Rev. A 89, 043841 (2014).

4. M. O. Scully, et al., FAST CARS: Engineering a laser spectroscopic technique for rapid identification of bacterial spores, Proc. Natl. Acad. Sci. USA 99, 10994 (2002).

5. D. Pestov, et al., Optimizing the laser-pulse configuration for coherent Raman spectroscopy, Science 316, 265 (2007).

For more information, please contact: Dr. Anzhong Wang 254-710-2276

PublisherDepartment of Physics
vCalDownload this event