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Título: | Controlling terahertz radiation with nanoscale metal barriers embedded in nano slot antennas |
Autor: | Park, H. R.; Martín-Moreno, Luis CSIC ORCID ; García-Vidal, F. J.; Bravo-Abad, Jorge | Fecha de publicación: | 2011 | Editor: | American Chemical Society | Citación: | ACS Nano 5(10): 8340-8345 (2011) | Resumen: | Nanoscale metallic barriers embedded in terahertz (THz) slot antennas are shown to provide unprecedented control of the transition state arising at the crossover between the full- and half-wavelength resonant modes of such antennas. We demonstrate strong near-field coupling between two paired THz slot antennas separated by a 5 nm wide nanobarrier, almost fully inducing the shift to the resonance of the double-length slot antenna. This increases by a factor of 50 the length-scale needed to observe similar coupling strengths in conventional air-gap antennas (around 0.1 nm), making the transition state readily accessible to experiment. Our measurements are in good agreement with a quantitative theoretical modeling, which also provides a simple physical picture of our observations. © 2011 American Chemical Society. | URI: | http://hdl.handle.net/10261/52536 | DOI: | 10.1021/nn2031885 | Identificadores: | doi: 10.1021/nn2031885 issn: 1936-0851 e-issn: 1936-086X |
Aparece en las colecciones: | (ICMA) Artículos |
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