Simple paper architecture modifications lead to enhanced sensitivity in nanoparticle based lateral flow immunoassays.

Parolo, Claudio; Medina-Sánchez, Mariana; de la Escosura-Muñiz, Alfredo; Merkoçi, Arben · Lab Chip · 2013

basic_science · Level V

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Abstract

Lateral flow immunoassays (LFIA) are ideal biosensors to detect proteins, but their lack of sensitivity hinders their extensive use. We report a strategy that yields up to an 8-fold improvement in the sensitivity of a gold nanoparticles-based LFIA by changing the sizes of the pads. Theoretical flow simulations of the developed LFIA architectures are in accordance with the experimental results.

Medical subject headings