Light-controlled one-sided growth of large plasmonic gold domains on quantum rods observed on the single particle level

Luigi Carbone; Arpad Jakab; Yuriy Khalavka; Carsten Sönnichsen

doi:10.1117/12.847312

17 February 2010 Light-controlled one-sided growth of large plasmonic gold domains on quantum rods observed on the single particle level

Luigi Carbone, Arpad Jakab, Yuriy Khalavka, Carsten Sönnichsen

Author Affiliations +

Proceedings Volume 7575, Colloidal Quantum Dots for Biomedical Applications V; 757505 (2010) https://doi.org/10.1117/12.847312
Event: SPIE BiOS, 2010, San Francisco, California, United States

Abstract

We create large gold domains (up to 15 nm) exclusively on one side of CdS or CdSe/CdS quantum rods by photoreduction of gold ions under anaerobic conditions. Electrons generated in the semiconductor by UV stimulation migrate to one tip where they reduce gold ions. Large gold domains eventually form; these support efficient plasmon oscillations with a light scattering cross section large enough to visualize single hybrid particles in a dark-field microscope during growth in real time.

Citation Download Citation

Luigi Carbone, Arpad Jakab, Yuriy Khalavka, and Carsten Sönnichsen "Light-controlled one-sided growth of large plasmonic gold domains on quantum rods observed on the single particle level", Proc. SPIE 7575, Colloidal Quantum Dots for Biomedical Applications V, 757505 (17 February 2010); https://doi.org/10.1117/12.847312

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