期刊
ACS NANO
卷 7, 期 12, 页码 11035-11042出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn404703z
关键词
surface plasmon polaritons; quasiperiodic; moire patterns; high rotational symmetry lattices; plasmonic band gaps; angle-resolved reflectance spectroscopy pseudo-Brillouin zones
类别
资金
- National Science Foundation (NSF) under NSF Award [DMR-1006380, CMMI-1069180]
- National Defense Science and Engineering Graduate (NDSEG) Fellowship [FA9550-11-C-0028]
- NSF-MRSEC
- NSF-NSC
- Keck Foundation
- MRSEC program of the NSF [DMR-1121262]
- DoD
- Air Force Office of Scientific Research
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1006380] Funding Source: National Science Foundation
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1069180] Funding Source: National Science Foundation
This paper describes the properties of silver plasmonic crystals with quasiperiodic rotational symmetries. Compared to periodic plasmonic crystals, quasiperiodic moire 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 moire 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.
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