| Gold nanorods (NRs) have received widespread attention due to their strongly localized surface plasmon
resonance. Recently, they have been proposed as basic building block for structuring plasmon enhanced
devices and optical metamaterials due to their inherent negative permittivity in visible frequency. These
electromagnetic properties depend on the size, shape and composition of the individual particles, as well
as their local arrangement. In this regards, we are developing colloidal-based synthetic methods that are
efficient and scalable and provide finely-tailored and narrowly-dispersed gold NRs. They serve as
starting points to create compositionally complex nanostructure through secondary reduction and galvanic
replacement reaction. Additionally, we have developed self-limiting assembling strategies that provide
complex assembly such as side by side pair, phi structure, and nanochain. Through this reaction control
of size and shape of the particles, as well as structural and compositional variation, broad range of novel
optical responses are observed.
Kyoungweon Park received her Ph.D. in Polymer Engineering from Georgia Institute of Technology in
2006. Currently she is a National Research Council postdoctoral fellow in the Nanostructured and
Biological Materials Branch at the Air Force Research Lab in the Wright–Patterson Air Force Base. Her
research interests include design, synthesis, and characterization of nanostructured materials capable of
controlled assembly and self-organization.
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