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SUMMARY:Transformation optics\, surface plasmons\, and metasurfaces - Prof
 essor Sir John Pendry\, Imperial College\, London
DTSTART:20170511T131500Z
DTEND:20170511T141500Z
UID:TALK68396@talks.cam.ac.uk
CONTACT:Edgar Engel
DESCRIPTION:Metallic surfaces support surface plasmon excitations whose pr
 operties are intimately connected to the surface geometry. For example a f
 lat silver surface is an excellent mirror\, but the same material with a r
 ough surface is black\, reflecting hardly any light. Here we use transform
 ation optics to relate many complex surface structures to a single mother 
 structure. In this way we can classify the spectra of these complex surfac
 es. Examples will be given of singular structures that harvest light\, ele
 ctron energy loss\, van der Waals forces and other properties that are rel
 ated to the surface plasmon spectrum.
LOCATION:TCM Seminar Room\, Cavendish Laboratory
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