Journal
PHYSICAL REVIEW B
Volume 85, Issue 20, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.85.205123
Keywords
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Funding
- Engineering and Physical Sciences Research Council [EP/G060363/1]
- Royal Society
- China Scholarship Council
- Engineering and Physical Sciences Research Council [EP/G060363/1] Funding Source: researchfish
- EPSRC [EP/G060363/1] Funding Source: UKRI
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On the mesoscopic scale, electromagnetic forces are of fundamental importance to an enormously diverse range of systems, from optical tweezers to the adhesion of gecko toes. Here we show that a strong light-driven force may be generated when a plasmonic metamaterial is illuminated in close proximity to a dielectric or metal surface. This near-field force can exceed radiation pressure and Casimir forces to provide an optically controlled adhesion mechanism mimicking the gecko toe: At illumination intensities of just a few tens of nW/mu m(2) it is sufficient to overcome the Earth's gravitational pull.
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