Comparison of the sensitivity of extraordinary transmittance peaks with the surrounding media for hole and slit arrays

In this paper we compare the sensitivity of the Extraordinary Transmittance (ET) peak position with the surrounding media for two types of metallic structures: arrays of holes and arrays of slits recorded in Au films. Both types of array were fabricated using Interference Lithography (IL) with a per...

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Bibliographic Details
Published in:Applied physics. A, Materials science & processing Materials science & processing, 2011-06, Vol.103 (3), p.631-634
Main Authors: Menezes, J. W., Avila, L. F., Braga, E. S., Cescato, L.
Format: Article
Language:English
Subjects:
Arrays
Characterization and Evaluation of Materials
Condensed Matter Physics
Gold
Lithography
Machines
Manufacturing
Media
Nanotechnology
Optical and Electronic Materials
Physics
Physics and Astronomy
Processes
Simulation
Slits
Spectra
Surfaces and Interfaces
Thin Films
Transmittance
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Summary:In this paper we compare the sensitivity of the Extraordinary Transmittance (ET) peak position with the surrounding media for two types of metallic structures: arrays of holes and arrays of slits recorded in Au films. Both types of array were fabricated using Interference Lithography (IL) with a period of 700 nm and an Au thickness of 150 nm. The transmission spectra measurements were performed at normal incidence using a spectrophotometer. The results show that an array of slits presents a higher sensitivity for the surrounding media than the array of holes. Theoretical TE and TM simulations of the transmission spectra for the slit arrays agree very well with the experimental results, confirming the better sensitivity of the slit arrays.
ISSN:0947-8396
1432-0630
DOI:10.1007/s00339-010-6195-x