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Metamaterial Optical Coatings for Broadband Asymmetric Mirrors Miriam Deutsch, University of Oregon, DMR-0239273

Δ R. 500nm. Metamaterial Optical Coatings for Broadband Asymmetric Mirrors Miriam Deutsch, University of Oregon, DMR-0239273. Innovation. Modeling. Implement design considerations at the nanoscale to achieve bulk materials with novel optical functionalities.

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Metamaterial Optical Coatings for Broadband Asymmetric Mirrors Miriam Deutsch, University of Oregon, DMR-0239273

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  1. ΔR 500nm Metamaterial Optical Coatings for Broadband Asymmetric Mirrors Miriam Deutsch, University of Oregon, DMR-0239273 Innovation Modeling Implement design considerations at the nanoscale to achieve bulk materials with novel optical functionalities. Example – asymmetric mirrors with metamaterial coatings exhibit ultra- broadband asymmetric reflectance. Calculated reflectance asymmetry as function of metamaterial film thickness. Experimental Demonstration Potential Impact Measured asymmetric reflectance of thin disordered silver films (inset) with various metal filling fractions. Broadband asymmetry exists (circled) for a thin film with ~74% metal nanocrystals. • Broadband signal control and • processing • Chemical and bio-sensing applications • Applications in photo-voltaic systems • Compatible with metal, dielectric and • meta-material coatings. Future work: incorporate active materials into films

  2. Metamaterial Optical Coatings for Broadband Asymmetric Mirrors Miriam Deutsch, University of Oregon, DMR-02-39273 Outreach: The PI has been regularly training students in the REU program. In Summer 2006 Eric Miller, a Physics/Computer Science REU student from U Mass Amherst, has actively participated in our group research. We have written a comprehensive computer program for calculating light scattering from metallodielectric spherical Bragg resonators utilizing a plane-wave multipole expansion. The code is available on our group website as a free download. See http://www.mo.uoregon.edu/resources.html Our research on broadband asymmetric mirrors has yielded one patent application, filed November 2006. Education: Five graduate students (Sarah Emmons, Charles Rohde, Lawrence Davis, Aiqing Chen and Keisuke Hasegawa) are currently working in the group. Sarah Emmons is a Chemistry graduate student. She is the recipient of the NSF GK-12 fellowship. Charles Rhode is a Physics graduate student. He was an NSF IGERT fellow during the 2002-2003 academic year. Lawrence Davis, Aiqing Chen and Keisuke Hasegawa are Physics graduate students. One undergraduate student, Emily Miller, is participating in research in our group.

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