A printable, surface enhanced Raman scattering (SERS) active test strip, with in situ growth of gold nanoparticles on completely untreated paper, is demonstrated to screen for bio-toxins below the maximum residue levels in the European Union, in food. The cheap disposable strip produced from as-purchased printing paper can also be used for SERS mapping of fluorescent dyes.
W. Liao, P. K. Roy and S. Chattopadhyay, RSC Adv., 2014, 4, 40487 DOI: 10.1039/C4RA04821K
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