Comparison of adhesion layers of gold on silicate glasses for SERS detection

Type Article
Date 2015-11
Language English
Author(s) Colas FlorentORCID1, 2, Barchiesi D.3, Kessentini S.4, Toury T.5, De La Chapelle M. Lamy2
Affiliation(s) 1 : IFREMER REM RDT LDCM, F-29280 Plouzane, France.
2 : Univ Paris 13, Sorbonne Paris Cite, Lab CSPBAT, CNRS,UMR 7244, F-93017 Bobigny, France.
3 : Univ Technol Troyes, Project UTT INRIA Gamma3, Project Grp Automat Mesh Generat & Adv Methods, F-10004 Troyes, France.
4 : Univ Sfax, Fac Sci Sfax, Sfax, Tunisia.
5 : Univ Technol Troyes, ICD LNIO, CNRS, UMR 6279, F-10004 Troyes, France.
Source Journal Of Optics (2040-8978) (Iop Publishing Ltd), 2015-11 , Vol. 17 , N. 11 , P. 1-7
DOI 10.1088/2040-8978/17/11/114010
WOS© Times Cited 13
Keyword(s) surface-enhanced raman scattering, adhesion layer, nanocylinder, discrete dipole approximation
Abstract Gold is one of the most widely used metals for building up plasmonic devices. Although slightly
less efficient than silver for producing sharp resonance, its chemical properties make it one of the
best choices for designing sensors. Sticking gold on a silicate glass substrate requires an
adhesion layer, whose effect has to be taken into account. Traditionally, metals (Cr or Ti) or
dielectric materials (TiO2 or Cr2O3 ) are deposited between the glass and the nanoparticle.
Recently, indium tin oxide and (3-mercaptopropyl)trimethoxysilane (MPTMS) were used as a
new adhesion layer. The aim of this work is to compare these six adhesion layers for surface-
enhanced Raman scattering sensors by numerical modeling. The near-field and the far-field
optical responses of gold nanocylinders on the different adhesion layers are then calculated. It is
shown that MPTMS leads to the highest field enhancement, slightly larger than other dielectric
materials. We attributed this effect to the lower refractive index of MPTMS compared with the
others.
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