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  • Review Article
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Shaping the future of manipulation

Abstract

Optical forces can be used to manipulate biological and colloidal material in a non-contact manner. This forms the foundation of a wealth of exciting science, particularly in the fields of physics, biology and soft condensed matter. Although the standard Gaussian single-beam trap remains a very powerful tool, shaping the phase and amplitude of a light field provides unusual light patterns that add a major new dimension to research into particle manipulation. This Review summarizes the impact and emerging applications of shaped light in the field of optical manipulation.

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Figure 1: Optical tweezers are conceptually analogous to a harmonic oscillator.
Figure 2: Example of holographic optical trapping.
Figure 3: Examples of elaborate laser modes generated by diffractive elements.
Figure 4: Biological applications of beam-shaping systems.
Figure 5: Optical fractionation in an optical landscape.

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The authors thank the UK Engineering and Physical Sciences Research Council for funding.

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Dholakia, K., Čižmár, T. Shaping the future of manipulation. Nature Photon 5, 335–342 (2011). https://doi.org/10.1038/nphoton.2011.80

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