Professor Javier Aizpurua, Center for Materials Physics, Spain
Driving Nanophotonics to the Atomic Scale
Plasmonic nanocavities are formed at the junction of two metallic interfaces and provide a great opportunity to explore atomic-scale morphologies and complex photochemical processes by optically monitoring the excitation of their intense surface plasmonic modes. In recent years, optical spectroscopy of these cavities has proven to be extremely sensitive to atomic-scale features that determine the chemistry and the optoelectronics in the gaps. In this regime, classical theories often fail to address the fine details of the optical response, and more sophisticated quantum models are needed. Indeed, quantum theoretical approaches can be properly developed to address the optics of extreme atomic-scale structures, such as in metallic nanogaps where the separation distances reach Ångstrom-scale dimensions. A few experimental situations in optoelectronics and molecular spectroscopy where optics is proven to address the atomic scale, and thus quantum effects are shown to be of paramount importance will be described in this talk.
ABOUT THE PRESENTER
Javier Aizpurua is a Research Professor of the Spanish Council for Scientific Research (CSIC) at the Center for Materials Physics in San Sebastián, Spain, where he leads the Theory of Nanophotonics Group (http://cfm.ehu.es/nanophotonics/). Professor Aizpurua has developed theory to understand the interaction of light and nanostructured materials in a variety of field-enhanced spectroscopy and microscopy configurations, such as in SERS, SEIRA, s-SNOM, STM, or STEM. The understanding of the optical response of complex nanosystems has been the main focus of his research, particularly in the field of optical nanoantennas and nanoplasmonics with special emphasis on the role of quantum effects in nanophotonics. He has published more than 150 papers devoted to nanoplasmonics and has given more than 200 invited talks and seminars all over the world, leading efforts to connect classical and quantum descriptions of the interaction of light and matter.
DATE: Thursday, 10 November 2016
VENUE: MSG-025 MSSI Building Extension
TEA/COFFEE WILL BE AVAILABLE AT 11h45
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