Development of a novel low-cost au-printed SERS paper substrate for point-of-care application

Abstract

We report a simple low-cost gold nanoparticle (AuNP)-loaded surface-enhanced Raman spectroscopy (SERS) paper substrate. With 1 mM Rhodamine B, five 2.0 wt% sodium carboxymethyl cellulose (CMC)-AuNP printing cycles resulted in higher SERS intensities and reproducibility compared to commercial SERS substrate.