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Optical forces

Laser tractor beams

Scientists have theoretically proposed that it is possible to pull objects from a far distance towards a light source in the absence of axial optical gradient forces.

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Figure 1: Scattering and forces acting on small dipolar and multipolar particles.


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Correspondence to Juan José Sáenz.

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Sáenz, J. Laser tractor beams. Nature Photon 5, 514–515 (2011).

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