Magnetic assembly of gold core-shell necklace resonators

Kanna Aoki, Kentaro Furusawa, Takuo Tanaka

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Gold core-shell necklace structures are assembled by inducing magnetic moments of gold-coated paramagnetic microspheres and a diamagnetic sphere using an external magnetic field. Sphere numbers in a necklace structure was tuned solely by controlling magnetic permeability of background medium. A necklace structure consisting of evenly spaced metal spheres or disks is known to be a good medium for a plasmonic resonance. Therefore, their optical properties were numerically studied. The electric field enhancement by a factor of 1800 was estimated in the gaps between adjacent spheres at a resonant wavelength. The wavelength-scaling strategies of our structures to visible wavelength are also discussed.

本文言語English
論文番号181106
ジャーナルApplied Physics Letters
100
18
DOI
出版ステータスPublished - 2012 4月 30

ASJC Scopus subject areas

  • 物理学および天文学(その他)

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