Title :
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
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;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2011 11th IEEE Conference on
Conference_Location :
Portland, OR
Print_ISBN :
978-1-4577-1514-3
Electronic_ISBN :
1944-9399
DOI :
10.1109/NANO.2011.6144604
