Extraordinary magnetic field enhancement with metallic nanowire: Role of surface impedance in babinet's principle for sub-Skin-Depth regime

Sukmo Koo, M. Sathish Kumar, Jonghwa Shin, Daisik Kim, Namkyoo Park

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We propose and analyze the "complementary" structure of a metallic nanogap, namely, the metallic nanowire for magnetic field enhancement. A huge enhancement of the field up to a factor of 300 was achieved. Introducing the surface impedance concept, we also develop and numerically confirm a new analytic theory which successfully predicts the field enhancement factors for metal nanostructures. Compared to the predictions of the classical Babinet principle applied to a nanogap, an order of magnitude difference in the field enhancement factor was observed for the sub-skin-depth regime nanowire.

Original languageEnglish
Article number263901
JournalPhysical Review Letters
Issue number26
Publication statusPublished - 21-12-2009


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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