Optical manipulation of nanoparticles and biomolecules in sub-wavelength slot waveguides

Allen H. J. Yang, Sean D. Moore, Bradley S. Schmidt, Matthew Klug, Michal Lipson and David Erickson ()
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Allen H. J. Yang: School of Chemical and Biomolecular Engineering,
Sean D. Moore: Sibley School of Mechanical and Aerospace Engineering,
Bradley S. Schmidt: School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA
Matthew Klug: Sibley School of Mechanical and Aerospace Engineering,
Michal Lipson: School of Electrical and Computer Engineering, Cornell University, Ithaca, New York 14853, USA
David Erickson: Sibley School of Mechanical and Aerospace Engineering,

Nature, 2009, vol. 457, issue 7225, 71-75

Abstract: Trapping and transport in an optical nanochannel One of the obstacles to the development of active nanosystems is the ability to controllably deliver nanoscopic matter to and within nanostructures. This paper describes the combination of near-field optical forces (such as those used in optical traps) to confine nanoscopic matter inside a liquid core-slot waveguide and photon scattering forces to transport them. The waveguide overcomes the diffraction limits of conventional optical trapping systems to manipulate objects down to tens of nanometres in scale. As the waveguide is linear, it can also manipulate extended biomolecules demonstrated by trapping and transporting DNA molecules.

Date: 2009
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DOI: 10.1038/nature07593

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