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RESEARCH PRODUCT
Quantitative Optical Trapping of Single Gold Nanorods
Olaf SchubertInga ZinsCarsten SönnichsenLene B. OddershedeChristine Selhuber-unkelsubject
Materials sciencegenetic structuresbusiness.industryMechanical EngineeringPhysics::OpticsBioengineeringGeneral ChemistryCondensed Matter PhysicsLaserlaw.inventionWavelengthOpticsOptical tweezersPolarizabilitylawOptoelectronicsParticleGeneral Materials ScienceNanorodsense organsPhysics::Atomic PhysicsSurface plasmon resonancebusinessPlasmondescription
We report a quantitative analysis of the forces acting on optically trapped single gold nanorods. Individual nanorods with diameters between 8 and 44 nm and aspect ratios between 1.7 and 5.6 were stably trapped in three dimensions using a laser wavelength exceeding their plasmon resonance wavelengths. The interaction between the electromagnetic field of an optical trap and a single gold nanorod correlated with particle polarizability, which is a function of both particle volume and aspect ratio.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-08-30 | Nano Letters |