An array of surface-enhanced Raman scattering substrates based on plasmonic lenses

Date

2012-10-01

Authors

Kahraman, M.
Cakmakyapan, S.
Özbay, Ekmel
Culha, M.

Editor(s)

Advisor

Supervisor

Co-Advisor

Co-Supervisor

Instructor

BUIR Usage Stats
0
views
11
downloads

Citation Stats

Series

Abstract

An array of ring-shaped holes is prepared from silver thin films using electron beam lithography. The optimal conditions for high performance as a surface-enhanced Raman scattering (SERS) substrate are investigated. Either the diameter of the hole (0.5, 1.0, 2.0, 3.0 and 4.0 μm) or the slit width (200, 300, 400, 500 and 600 nm) is varied. 4-Aminothiophenol (ATP) adsorbed on the structures as a self-assembled monolayer (SAM) is used as probe to evaluate the SERS performance of the generated structures. It is found that there is an optimal configuration for ring-shaped holes with a 3.0-μm diameter and 200-nm slit width. The SERS activity on this optimal lens configuration is found to be 13 times greater than that of the activity on the silver thin film. An array of these structures at this optimal configuration can easily be constructed and used in a range of SERS-based sensing applications. An array of ring-shaped holes is prepared from silver thin films using electron beam lithography. The optimal conditions for high performance as a surface-enhanced Raman scattering (SERS) substrate are investigated. It is found that there is an optimal configuration for ring-shaped holes with a 3.0-μm diameter and 200-nm slit with. The SERS activity on this optimal lens configuration is found to be 13 times greater than that of the activity on the silver thin film.

Source Title

Annalen der Physik

Publisher

Wiley

Course

Other identifiers

Book Title

Keywords

Plasmon focusing, Ring-shaped holes, SERS, Substrate, 4-aminothiophenol, Optimal conditions, Optimal configurations, Plasmonic lens, Ring-shaped holes, Sensing applications, Silver thin films, Slit width, Surface enhanced Raman scattering (SERS), Electron beam lithography, Film preparation, Optimization, Plasmons, Raman scattering, Self assembled monolayers, Silver, Surface scattering, Thin films, Substrates

Degree Discipline

Degree Level

Degree Name

Citation

Published Version (Please cite this version)

Language

English

Type

Article