Design and fabrication of resonant coaxial nanoapertures in a gold film

Author

Li, Dan ; Pang, YuanJie ; Gordon, Reuven

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Victoria, Victoria, BC, Canada

fYear

2011

fDate

15-18 Aug. 2011

Firstpage

1413

Lastpage

1415

Abstract

We study the resonance properties of a coaxial aperture in a perfect electric conductor and in a real metal. For both cases, we present an analytic theory to describe the reflection properties of the aperture that agrees quantitatively with finite-difference time-domain calculations. The theory is applied to design coaxial apertures with a desired resonance wavelength. We present resonant coaxial apertures fabricated by focused ion beam milling, for which further experiments are on-going with applications including near-field aperture probes, sensors, optical traps and metamaterials.

Keywords

conductors (electric); finite difference time-domain analysis; focused ion beam technology; gold; metallic thin films; metamaterials; nanofabrication; nanostructured materials; coaxial apertures; electric conductor; finite-difference time-domain calculations; focused ion beam milling; gold film; metamaterials; near-field aperture probes; optical trapping; reflection properties; resonant coaxial nanoapertures; Apertures; Metals; Optical device fabrication; Optical films; Optical imaging; Optical sensors; Optical variables control; Nanophotonics and photonic crystals; Subwavelength structures; Surface plasmons;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology (IEEE-NANO), 2011 11th IEEE Conference on

Conference_Location

Portland, OR

ISSN

1944-9399

Print_ISBN

978-1-4577-1514-3

Electronic_ISBN

1944-9399

Type

conf

DOI

10.1109/NANO.2011.6144604

Filename

6144604