ArticleACS applied materials & interfaces2026
Selective Narrowing of the Bonding Modes of Plasmonic Nanoantennas.
Article in ACS applied materials & interfaces, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Plasmonic bowtie-structured nanocavities are valuable structures for applications due to the large confinement of light at their center and the associated large enhancement of the electric field. Plasmonic bowties suffer, though, from broad spectral lines that limit their interaction with quantum emitters. We report here a significant narrowing of the longitudinal plasmon resonance that couples the two prisms of silver bowties, induced by the deposition of a thin (1 nm) Ti adhesion layer during fabrication. The quality factor of the longitudinal mode of many of these bowties is much larger than that of bowties without an adhesion layer, even while their transverse mode remains unmodified. Cross-sectional electron microscopy analysis reveals that the Ti adhesion layer is fully oxidized. Further, and surprisingly, the TiO
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