期刊
NANOPHOTONICS
卷 9, 期 4, 页码 897-903出版社
WALTER DE GRUYTER GMBH
DOI: 10.1515/nanoph-2019-0514
关键词
Tamm plasmon; metasurface; liquid crystal; Bragg mirror
资金
- UK Engineering and Physical Sciences Research Council [EP/R024421/1]
- European Office of Aerospace Research and Development [15IOE011]
- EPSRC [EP/R024421/1] Funding Source: UKRI
We demonstrate experimentally that Tamm plasmons in the near infrared can be supported by a dielectric mirror interfaced with a metasurface, a discontinuous thin metal film periodically patterned on the sub-wavelength scale. More crucially, not only do Tamm plasmons survive the nanopatterning of the metal film but they also become sensitive to external perturbations as a result. In particular, by depositing a nematic liquid crystal on the outer side of the metasurface, we were able to red shift the spectral position of Tamm plasmon by 35 nm, while electrical switching of the liquid crystal enabled us to tune the wavelength of this notoriously inert excitation within a 10-nm range.
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