Split ring resonators: the effect of titanium adhesion layers on the optical response

Basudev Lahiri; Rafal Dylewicz; Scott G. McMeekin; Ali Z. Khokhar; Richard M. De La Rue; Nigel P. Johnson

doi:10.1117/12.858134

5 May 2010 Split ring resonators: the effect of titanium adhesion layers on the optical response

Basudev Lahiri, Rafal Dylewicz, Scott G. McMeekin, Ali Z. Khokhar, Richard M. De La Rue, Nigel P. Johnson

Proceedings Volume 7711, Metamaterials V; 771116 (2010) https://doi.org/10.1117/12.858134
Event: SPIE Photonics Europe, 2010, Brussels, Belgium

Abstract

The response of metallic split ring resonators (SRRs) scales linearly with their dimensions. At higher frequencies, metals do not behave like perfect conductors but display properties characterized by the Drude model. In this paper we compare the responses of nano-sized gold-based SRRs at near infra-red wavelengths. Deposition of gold SRRs onto dielectric substrates typically involves the use of an additional adhesion layer. We have employed the commonly used metal titanium (Ti) to provide an adhesive layer for sticking gold SRRs to silicon substrates - and have investigated the effect of this adhesion layer on the overall response of these gold SRRs. Both experimental and theoretical results show that even a two nm thick titanium adhesion layer can shift the overall SRR response by 20 nm.

Citation Download Citation

Basudev Lahiri, Rafal Dylewicz, Scott G. McMeekin, Ali Z. Khokhar, Richard M. De La Rue, and Nigel P. Johnson "Split ring resonators: the effect of titanium adhesion layers on the optical response", Proc. SPIE 7711, Metamaterials V, 771116 (5 May 2010); https://doi.org/10.1117/12.858134

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KEYWORDS

Titanium

Gold

Metals

Magnetism

Polarization

Split ring resonators

Reflectivity

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