Field enhancement and saturation of millimeter waves inside a metallic nanogap

Junshan Lin, Sang Hyun Oh, Hoai Minh Nguyen, Fernando Reitich

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

This paper investigates the millimeter electromagnetic waves passing through a metal nanogap. Based upon the study of a perfect electrical conductor model, we show that the electric field enhancement inside the gap saturates as the gap size approaches zero, and the ultimate enhancement strength is inversely proportional to the thickness of the metal film. In addition, no significant enhancement can be gained by decreasing the gap size further if the aspect ratio between the dimensions of the underlying geometric structure exceeds approximately 100.

Original languageEnglish (US)
Pages (from-to)14402-14410
Number of pages9
JournalOptics Express
Volume22
Issue number12
DOIs
StatePublished - Jun 16 2014

Fingerprint Dive into the research topics of 'Field enhancement and saturation of millimeter waves inside a metallic nanogap'. Together they form a unique fingerprint.

Cite this