Scott M. Tabakman, Zhuo Chen, Hernan Sanchez Casalongue, Hailiang Wang and Hongjie Dai A New Approach to Solution-Phase Gold Seeding for SERS Substrates Small 7
A solution-phase method to seed nanoparticle precursors and grow plasmonic gold films on a wide variety of unmodified substrates is presented. The resulting gold-on-gold films exhibit a strong surface-enhanced Raman scattering effect, with enhancement factors of ≈107 observed stably and uniformly over large areas. Combined with carbon nanotube Raman labels, the films afford highly sensitive detection of a cancer biomarker protein.
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