title: Anomalous light transmission from plasmonic-capped nanoapertures.
abstract: We report an anomalous light transmission phenomenon for a nanoaperture on an opaque screen when the aperture is covered with an opaque cap. In conventional optics, light transmission must decrease when the aperture is capped. However, we found that light transmission is enhanced when the nanodisk is in close proximity to the aperture at a wavelength close to the plasmon resonance. This effect even occurs when the disk is larger than the aperture.
authors.affiliation: Department of Chemistry and Biochemistry, School of Advanced Science and Engineering, Waseda University , Okubo, Shinjuku, Tokyo 169-8555, Japan.
authors.forename: Kohei
authors.initials: K
authors.lastname: Imura
authors.forename: Kosei
authors.initials: K
authors.lastname: Ueno
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Misawa
authors.forename: Hiromi
authors.initials: H
authors.lastname: Okamoto
mesh_terms: D008027:Light; D049329:Nanostructures