Dr Debdulal Roy, National Physical Laboratory, London

Nano-optics for nanostructures and nanochemistry
When Mar 02, 2015
from 02:00 PM to 03:00 PM
Where LR8, IEB Building, Engineering Science
Contact Name
Contact Phone 01865-273925
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Heterogeneity and inhomogeneity are integral parts of most functional materials. Transmission electron microscopy (TEM), generally the technique of choice due to its atomic resolution, works only in vacuum. Near-field optical tool such as tip-enhanced Raman spectroscopy, however, allows conducting measurements on local nanoscale surfaces in ambient environments. In this talk two examples of measurements using nano-optics will be presented: one that measures chemistry on single electro-chemically active sites on a catalytic surface, paving the path for real-time investigation of catalytic reactions, and the other maps individual defects in 2D  materials such as  graphene.