Concept of the Optical Vacuum Cleaner (IMAGE)

Tomsk Polytechnic University

Concept of the Optical Vacuum Cleaner

Caption

(a) Schematic diagram for the "optical vacuum cleaner", where a nanoparticle is pulled by the optical force, and moves towards the nanohole structured dielectric cuboid. (b,c) Light intensity (|E|2) and optical force distributions for (b) solid cuboid without a hole, (c) cuboid with a 20?nm hole. The refractive index and size of the simulated cuboids are set to be n?=?2 and L?=?λ. (d) Optical force and light intensity vs illumination wavelength, at the opening of the nanohole. The optical force is assumed to be exerted on a gold nanosphere with the radius of d?=?15?nm and complex dielectric permittivity εp?=??9.421?+?1.504 i at λ?=?600?nm35, and calculated using the dipole approximation. The arrows in blue color represent the optical gradient force.

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Tomsk Polytechnic University

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