|Date||October 24, 2014||Time||3:35 - 5:00 pm|
|Location||Baylor Sciences Building, Room E.125|
The Physical Realization of the Dirac Monopole
Nanometer-Scale Resolution Chemical Analysis of Carbon Nanotubes by Tip-Enhanced Raman Spectroscopy
Raman spectroscopy can be used to study the chemical properties of nearly any material but is spatially limited by source-laser spot size and wavelength. The combination of Raman spectroscopy with Scanning Tunneling Microscopy (STM) provides subnanometer spatial resolution of surface morphology. There is also a local electronic enhancement of Raman signal intensity by the STM tip allowing for nanometer-scale Raman mapping of surfaces. This talk will introduce the enhancement mechanism of Tip-Enhanced Raman Spectroscopy (TERS) and present the results of a paper which provides a 1.7nm resolution chemical analysis of carbon nanotubes on a gold substrate via STM-TERS.
Source paper: Chen, C., Hayazawa, N. & Kawata, S. A 1.7 nm resolution chemical analysis of carbon nanotubes by tip-enhanced Raman imaging in the ambient. Nature Communications 5, Article 3312 (2014).
For more information, please contact: Dr. Ken Park 254-710-2282
|Publisher||Department of Physics|
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