Fabrication of Gold-Coated Ultra-Thin Anodic Porous Alumina Substrates for Augmented SERS.

ABSTRACT: Anodic porous alumina (APA) is a nanostructured material used as a template in several nanotechnological applications. We propose the use of APA in ultra-thin form (<100 nm) for augmented surface-enhanced Raman scattering (SERS). Here, the effect of in-depth thinning of the APA nanostructures for possible maximization of SERS was addressed. Anodization was carried out on ultra-thin films of aluminum on glass and/or silicon, followed by pore-opening. Gold (Au) was overcoated and micro‑Raman/SERS measurements were carried out on test target analytes. Finite integration technique simulations of the APA-Au substrate were used both for the experimental design and simulations. It was observed that, under optimized conditions of APA and Au thickness, the SERS enhancement is higher than on standar

SUBMITTER: Toccafondi C 

PROVIDER: S-EPMC5456800 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature