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Phys Rev Lett. 2011 Nov 11;107(20):203602. Epub 2011 Nov 10.

Negative nonconservative forces: optical "tractor beams" for arbitrary objects.

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CREOL, The College of Optics and Photonics University of Central Florida, Orlando, 32816, USA.


Based on the conservation of linear momentum on scattering from arbitrary objects, we demonstrate the generation of nonconservative optical forces that act in a direction opposite to the propagation of the incident beam. The concept can be applied to tailor the force fields produced on nonabsorbing bodies regardless of their sizes and shapes.

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