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Hybrid semiconductor-metal nanoparticles are of both fundamental and practical interest. CdSe semiconductor nanocrystal quantum dots (NQDs) are emissive following direct absorption of photons, while nanosized metal structures exhibit plasmonic absorption and light scattering. In a hybrid nanoscale architecture, both optical phenomena can be integrated as metal-semiconductor coupling via non-radiative...
We describe the development and characterization of two novel non-blinking “giant” nanocrystal quantum dot (g-NQD) systems and their application to single-particle tracking in live cells real-time and in three dimensions. The two g-NQDs — CdSe/CdS and InP/CdS — are characterized by a thick shell layer (>10 monolayers of CdS), a quasi-type-II or type-II electronic structure, and extremely suppressed...
We demonstrate that sub-Poissonian statistics (photon antibunching) of photon emission from individual core-shell quantum dots can be transformed to super-Poissonian statistics (photon bunching) by coupling dots to a rough silver film
Nanocrystal quantum dot (NQD)-tubulin bioconjugates were prepared using a two-step crosslinking procedure. NQD-decorated microtubules were successfully polymerized directly from the NQD-tubulin conjugates to form nonaggregated, full-length (several micrometers) biopolymers. However, polymerization kinetics were slowed in comparison with unmodified tubulin and tubulin modified with small-molecule dyes...
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