Work

Trapping and Sensing 10 nm Metal Nanoparticles Using Plasmonic Dipole Antennas

Year: 2010

Type: article

Abstract: The optical trapping of Au nanoparticles with dimensions as small as 10 nm in the gap of plasmonic dipole antennas is demonstrated. Single nanoparticle trapping events are recorded in real time by monitoring the Rayleigh scattering spectra of individual plasmonic antennas. Numerical simulations are also performed to interpret the experimental results, indicating the possibility to trap nanoparticles only a few nanometers in size. This work unveils the potential associated with the integration of plasmonic trapping with localized surface plasmon resonance based sensing techniques, in order to deliver analyte to specific, highly sensitive regions ("hot spots").

Source: Nano Letters

DOI: 10.1021/nl904168f

Authors: Weihua Zhang, Lina Huang, Christian Santschi, Olivier J. F. Martin

Institution: École Polytechnique Fédérale de Lausanne

Language: English

Topic: Orbital Angular Momentum in Optics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: National Science Foundation, École Polytechnique Fédérale de Lausanne, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung

Awards: Optical trapping in plasmonic systems, G993971353