Quasiperiodic moiré plasmonic crystals.
This paper describes the properties of silver plasmonic crystals with quasiperiodic rotational symmetries. Compared to periodic plasmonic crystals, quasiperiodic moiré structures exhibited an increased number of surface plasmon polariton modes, especially at high angles of excitation. In addition, plasmonic band gaps were often formed at the intersections of these new modes. To identify the origin and predict the location of the band gaps, we developed a Bragg-based indexing system using the reciprocal lattice vectors of the moiré plasmonic crystals. We showed that even more complicated quasiperiodic geometries could also be described by this indexing model. We anticipate that these quasiperiodic lattices will be useful for applications that require the concentration and manipulation of light over a broadband spectrum.
Department of Chemistry, ‡Department of Materials Science & Engineering, Northwestern University , Evanston, Illinois 60208, United States.
Steven M
SM
Lubin
Alexander J
AJ
Hryn
Mark D
MD
Huntington
Clifford J
CJ
Engel
Teri W
TW
Odom
D000465:Algorithms; D001331:Automation; D015374:Biosensing Techniques; D002857:Chromium / Q000737:chemistry; D003460:Crystallization; D004867:Equipment Design; D008027:Light; D008855:Microscopy, Electron, Scanning; D036103:Nanotechnology / Q000379:methods*; D015203:Reproducibility of Results; D012825:Silicon / Q000737:chemistry; D012834:Silver / Q000737:chemistry*; D013053:Spectrophotometry; D020349:Surface Plasmon Resonance
D002857:Chromium; D012834:Silver; D012825:Silicon