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. Author manuscript; available in PMC: 2013 Dec 15.
Published in final edited form as: Anal Biochem. 2012 Sep 19;431(2):99–105. doi: 10.1016/j.ab.2012.09.013

Figure 1.

Figure 1

A) A schematic showing the basic process of the aggregation reaction. Oligo-AuNP conjugates 1 and 2 are bound together into a large aggregated network by the target sequence 1'2'. B) A schematic of the principles of the side-illumination waveguide system used to illuminate the scattering of the samples. C) Photograph of representative samples on the side-illumination system, showing the visible red-shift of aggregated vs. monodispersed AuNP. D) This shift can also be observed in the spectroscopy of the samples.