From Negative Refraction to Wireless Power Transfer - The Path of the Superlens
Merlin, Roberto - University of Michigan2012-02-04 10:30:00
Ann Arbor, MI - University of Michigan - 170 Dennison
Duration: 01:05:00
Professor Merlin's talk takes us from the late 1800's, when Abbe published his ground-breaking paper on the limit of resolution of an optical instrument, to the turn of the 20th century, when the field of near-field optics experienced tremendous growth, emphasizing recent work on sub-wavelength focusing using negative-index slabs. In the second half of the talk, he introduces the concept of near-field plates. These are grating-like planar structures, which provide focusing well beyond the diffraction limit, at arbitrary frequencies. The subwavelength electromagnetic-field distributions of the plates closely resemble those of negative-index slabs. Practical implementations of these plates hold promise for near-field data storage, non-contact sensing, imaging, nanolithography and wireless power transfer applications. Experimental results on a microwave near-field plate will be presented, which demonstrate focusing of 1 GHz radiation at a resolution of lambda over 20.
Roberto Merlin is the Peter A. Franken Collegiate Professor of Physics and Professor of Electrical Engineering and Computer Science at UM
Roberto Merlin is the Peter A. Franken Collegiate Professor of Physics and Professor of Electrical Engineering and Computer Science at UM
Watch the Web Lecture in your web browser (Flash and QuickTime versions available)
View detailed information about this resource
