Nanoscale Biomolecular Detection Limit for Gold Nanoparticles Based on Near-Infrared Response

<table>Tunability of the extinction cross section of nanoparticles. Variation of the total extinction cross section as a function of the nanosphere diameter size. The extinction cross section changes linearly with the gold nanosphere diameter giving the possibility of direct tuning of optical response with gold nanosphere dimension.</table>

Advances in Optical Technologies

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Figure 3: Nanoscale Biomolecular Detection Limit for Gold Nanoparticles Based on Near-Infrared Response 