Journal
NANO LETTERS
Volume 11, Issue 11, Pages 4597-4600Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl201996t
Keywords
Optical forces; torque; plasmonic chains; gold nanoparticles; optical resonances
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Funding
- Spanish MICINN [CSD2007-00046]
- Comunidad de Madrid Microseres Program [S2009/TIC-1476]
- [FIS2009-13430-C02-02]
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Optical trapping and driving of small objects has become a topic of increasing interest in multidisciplinary sciences. We propose to use a chain made of:metallic nanoparticles as a resonant light sail, attached by one end point to a transparent object and propelling it by the use of electromagnetic radiation. Driving,Forces exerted on the chain are theoretically studied as a function of radiation's wavelength and chain's alignments with respect to the direction of radiation. Interestingly, there is a window in the frequency spectrum in which null torque equilibrium configuration, with minimum geometric cross section, corresponds to a maximum in the driving force.
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