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Lecture 17 - Alternative plasmonic materials (student presentation)

Lecture 17 - Alternative plasmonic materials (student presentation)

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12/10/2009 1 ECE-695S (2009) Student presentation
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Stonehenge : prehistoric monument in England said to be built by the end of stone age 12/10/2009 2 ECE-695S (2009) Student presentation
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12/10/2009 ECE-695S (2009) Student presentation 3 Shaman’s Rattles from Bronze age
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12/10/2009 ECE-695S (2009) Student presentation 4 Weapons from from Iron age
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12/10/2009 ECE-695S (2009) Student presentation 5 . . . now,
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12/10/2009 6 Intel’s Single Chip Cloud Processor containing 48 cores
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12/10/2009 ECE-695S (2009) Student presentation 7
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J.R. Krenn et al., Europhys.Lett. 60, 663 (2002) Oct 22, 2009 Intel turns to photonics to extend Moore's law Intel's Photonics Technology Laboratory in California is showing how optics may one day enable computer-chip designers to overcome the fundamental limitations of electronics. Breck Hitz talks to the lab's director, Mario Paniccia. Courtesy: optics.org Courtesy: Prof. M. Brongersma 12/10/2009 8 ECE-695S (2009) Student presentation
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What’s the problem? Losses! 12/10/2009 9 ECE-695S (2009) Student presentation
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12/10/2009 10 ECE-695S (2009) Student presentation Losses in materials, especially in near-IR and visible spectra Emerging innovative fields such as Transformational Optics have different requirements: Require effective permittivity nearly zero: e.g. optical cloaks, hyperlens etc. Real permittivity of metals must be comparable to that of dielectrics
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12/10/2009 11 ECE-695S (2009) Student presentation Losses in materials: mechanisms & significance Review of metals: Gold, Silver, Copper, Aluminum, Platinum, Palladium, Nickel Noble-Transition metal alloys, Alkali metals, Noble- Alkali metal alloys Semiconductors: Silicon, GaAs, InSb etc. Transparent Conducting Oxides Graphene Comparative study: Quality factors Conclusions
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Molecular rotations/vibrations Phonons Exciton generation Impurities & defects Intraband losses Interband transitions Photoelectron generation Auger absorption Compton effect Pair production AA Sokol et al., Faraday Discussions , 134, 267 (2007) 12/10/2009 12 ECE-695S (2009) Student presentation
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