6533b7d3fe1ef96bd126161a
RESEARCH PRODUCT
Light-controlled one-sided growth of large plasmonic gold domains on quantum rods observed on the single particle level
Luigi CarboneYuriy KhalavkaArpad JakabCarsten Sönnichsensubject
MicroscopeMaterials scienceChemistrybusiness.industryMechanical EngineeringPhysics::OpticsNanoparticleBioengineeringNanotechnologyGeneral ChemistryElectronCondensed Matter PhysicsDark field microscopyLight scatteringIonlaw.inventionCondensed Matter::Materials ScienceSemiconductorNanocrystallawParticleOptoelectronicsGeneral Materials SciencebusinessPlasmondescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2009-10-08 | Colloidal Quantum Dots for Biomedical Applications V |