Nanomaterials are used in many biomedical and environmental sensors. Undoubtedly, for more nanoparticle based sensors to widely utilized, the irreproducibility of the nanosensor measurements must be acknowledged and overcome. Herein, both the electromagnetic and physical stability of gold nanomaterials will be measured and modeled as a function of surface chemistry and general solution conditions. These results will reveal that solution and storage conditions of nanoparticles can be selected strategically to promote nanomaterial stability and to increase shelf-life. Additionally, simple quality control measures can be implemented to promote reproducible plasmonic and SERS detection of small molecules. The practical importance of nanoparticle engineering, surface chemistry, and stability will be emphasized and related to nanosensor applications.

Accepting and embracing practical "barriers" for solution-phase nanoparticle sensors

245th National Meeting (2013)

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