Issue 4, 2011

Microdroplet fabrication of silver–agarose nanocomposite beads for SERS optical accumulation

Abstract

Microdroplets have been used as reactors for the fabrication of agarose beads with high uniformity in shape and size, and densely loaded with silver ions, which were subsequently reduced into nanoparticles using hydrazine. The resulting nanocomposite beads not only display a high plasmonic activity, but can also trap/concentrate analytes, which can be identified by means of surface-enhanced Raman scattering (SERS) spectroscopy. The size of the beads is such that it allows the detection of a single bead under a conventional optical microscope, which is very useful to reduce the amount of material required for SERS detection.

Graphical abstract: Microdroplet fabrication of silver–agarose nanocomposite beads for SERS optical accumulation

Supplementary files

Article information

Article type
Paper
Submitted
30 juin 2010
Accepted
23 sept. 2010
First published
26 oct. 2010

Soft Matter, 2011,7, 1321-1325

Microdroplet fabrication of silver–agarose nanocomposite beads for SERS optical accumulation

S. Abalde-Cela, B. Auguié, M. Fischlechner, W. T. S. Huck, R. A. Alvarez-Puebla, L. M. Liz-Marzán and C. Abell, Soft Matter, 2011, 7, 1321 DOI: 10.1039/C0SM00601G

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