Local capacitor model for plasmonic electric field enhancement

J. H. Kang, D. S. Kim, Q. Han Park

Research output: Contribution to journalArticlepeer-review

111 Citations (Scopus)


We present a local capacitor model that enables a simple yet quantitatively accurate description of lightning rod effect in nanoplasmonics. A notion of λ-zone capacitance is proposed and applied to predict the strongly induced electric field by a light source near nanoscale metal edges such as metal tip or metal gap. The enhancement factor, calculated from the local capacitor model, shows excellent agreement with more rigorous results. The λ-zone capacitor allows a blockwise treatment of nano-optical devices and constitutes a basic element of optical nanocircuits.

Original languageEnglish
Article number093906
JournalPhysical review letters
Issue number9
Publication statusPublished - 2009 Mar 2

ASJC Scopus subject areas

  • Physics and Astronomy(all)


Dive into the research topics of 'Local capacitor model for plasmonic electric field enhancement'. Together they form a unique fingerprint.

Cite this