Gold nanorods and nanostars support polarized plasmon modes that resonate at near-infrared frequencies. These anisotropic nanoparticles are capable of both linear and nonlinear optical responses, with application as biological imaging probes. Gold nanorods are particularly efficient at converting optical energy into heat, and can deliver intense photothermal effects with subcellular precision, guided by two-photon excited luminescence. Gold nanostars with embedded magnetic cores can exhibit dynamic modulations in signal amplitudes, for enhancing optical contrast in heterogeneous media such as those encountered in tissues.

Biophotonic applications of polarization-sensitive gold nanorods and nanostars

248th National Meeting (2014)

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