Thursday, April 9, 2009, 10:30 am — Seminar Room, Bldg. 725
The natural time- and length-scales of the elementary excitations in matter define a new regime of ultrafast vibrational and electron dynamics as the dimensions of the medium shrink into the 1 to 100 nm range. To achieve the required femtosecond temporal and nanometer spatial resolution we take advantage of the optical antenna properties of nanoscopic metal tips. They provide the necessary local field enhancement and spatial confinement for scattering-type near-field optical microscopy. Here, I will discuss our recent results on the vibrational dynamics of block-copolymer nanostructures, nano-Raman spectroscopy of molecules and solids, and the spatially resolved optical response of plasmonic nanocrystals.
Hosted by: Dario Arena
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