Metamaterial Optical Coatings for Broadband Asymmetric Mirrors

1
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.
Potential Impact
Experimental Demonstration
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
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.
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.