Gold Nanohole Arrays Fabricated by Interference Lithography Technique as SERS Probes for Chemical Species Such As Rhodamine 6G and 4,4′-Bipyridine

• DOI: 10.1007/s11468-016-0353-8
• Publication Date: 2016-08-22T02:06:32Z
• Authors: Luis E. Gomez Armas; Jacson W. Menezes; M. G. Huila; K. Araki; H. E. Toma
• Keywords: Rhodamine 6G; Interference lithography; Bipyridine; Surface-Enhanced Raman Spectroscopy

In the present study, we report the SERS effect of rhodamine 6G (Rh6G) and 4-4′ bipyridine (Bipy) molecules on the surface of gold nanohole (AuNh) arrays fabricated by the interference lithography (IL) technique. It was observed an enhancement of the main bands of Rh6G and 4-4′ Bipy molecules, when deposited over the surface of AuNh, in comparison when that was deposited on the surface of 5-nm flat gold film. Our study indicates that metallic nanostructures fabricated by IL technique have the potential for high impact on biochemical sensing, such as DNA and bacterial detection, real time glucose sensing for diabetes, and in situ identification of reaction products.