Microscopic metavehicles powered and steered by embedded optical metasurfaces
| Autor: | Ruggero Verre, Denis G. Baranov, Mikael Käll, Daniel Andrén, Giovanni Volpe, Steven Jones |
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| Rok vydání: | 2021 |
| Předmět: |
Physics
Condensed Matter - Mesoscale and Nanoscale Physics business.industry Biomedical Engineering Phase (waves) FOS: Physical sciences Physics::Optics Bioengineering Dielectric Condensed Matter Physics Polarization (waves) Ray Atomic and Molecular Physics and Optics Optics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) Torque Phase gradient General Materials Science Electrical and Electronic Engineering business Realization (systems) Optics (physics.optics) Physics - Optics |
| Zdroj: | Nature Nanotechnology. 16:970-974 |
| ISSN: | 1748-3395 1748-3387 |
| DOI: | 10.1038/s41565-021-00941-0 |
| Popis: | Nanostructured dielectric metasurfaces offer unprecedented opportunities to manipulate light by imprinting an arbitrary phase-gradient on an impinging wavefront. This has resulted in the realization of a range of flat analogs to classical optical components like lenses, waveplates and axicons. However, the change in linear and angular optical momentum associated with phase manipulation also results in previously unexploited forces acting on the metasurface itself. Here, we show that these optomechanical effects can be utilized to construct optical metavehicles - microscopic particles that can travel long distances under low-power plane-wave illumination while being steered through the polarization of the incident light. We demonstrate movement in complex patterns, self-correcting motion, and an application as transport vehicles for microscopic cargo, including unicellular organisms. The abundance of possible optical metasurfaces attests to the prospect of developing a wide variety of metavehicles with specialized functional behavior. Main Text: 16 pages, 4 figures. Supporting Information: 6 pages, 9 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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