Invited Paper
A New Perspective on Materials for Plasmonics

Philippe Tassin Department of Applied Physics, Chalmers University, Göteborg, Sweden Costas M. Soukoulis Department of Physics and Ames Lab, Iowa State University, Ames, USA IESL, FORTH, Heraklion, Greece Thomas Koschny Department of Physics and Ames Lab, Iowa State University, Ames, USA Babak Dastmalchi Department of Physics and Ames Lab, Iowa State University, Ames, USA IESL, FORTH, Heraklion, Greece

In this talk, I will present a study of plasmonic materials from a new perspective. Surface plasmon polaritons are electromagnetic waves propagating on the surface of a metal and they are promising for applications in bio-sensing, optical interconnects, and nonlinear optics, amongst others, because of their subwavelength confinement of optical energy. Several new materials for plasmonics have been proposed in the last few years, but it has not always been clear how to compare such materials. We argue that it is not possible to characterize the performance of a plasmonic material with one single figure-of-merit and instead propose a new method of comparing plasmonics materials. Our analysis provides guidance on how to improve the performance of any particular plasmonics application and substantially eases the selection of the material for any specific plasmonics device.











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