An ultrasensitive microgravimetric biosensor has been developed incorporating Au nanoparticle-amplified sandwiched immunoassay and silver enhancement reaction; Au nanoparticle-promoted silver(I) reduction and silver metal deposition result in ca. two orders of magnitude improvement in human IgG quantification.
Au nanoparticle- and silver-enhancement reaction-amplified microgravimetric biosensor
X. Su, S. F. Y. Li and S. J. O’Shea, Chem. Commun., 2001, 755 DOI: 10.1039/B009768N
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