dorsal/arxiv
View SchemaOptical binding of particles with or without the presence of a flat dielectric surface
| Authors | P. C. Chaumet, M. Nieto-Vesperinas |
|---|---|
| Categories | |
| ArXiv ID | physics/0305045 |
| URL | https://arxiv.org/abs/physics/0305045 |
| DOI | 10.1103/PhysRevB.64.035422 |
| Journal | Phys. Rev. B, vol 64, 035422 (2001) |
Abstract
Optical fields can induce forces between microscopic objects, thus giving rise to new structures of matter. We study theoretically these optical forces between two spheres, either isolated in water, or in presence of a flat dielectric surface. We observe different behavior in the binding force between particles at large and at small distances (in comparison with the wavelength) from each other. This is due to the great contribution of evanescent waves at short distances. We analyze how the optical binding depends of the size of the particles, the material composing them, the wavelength and, above all, on the polarization of the incident beam. We also show that depending on the polarization, the force between small particles at small distances changes its sign. Finally, the presence of a substrate surface is analyzed showing that it only slightly changes the magnitudes of the forces, but not their qualitative nature, except when one employs total internal reflection, case in which the particles are induced to move together along the surface.
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"abstract": "Optical fields can induce forces between microscopic objects, thus giving\nrise to new structures of matter. We study theoretically these optical forces\nbetween two spheres, either isolated in water, or in presence of a flat\ndielectric surface. We observe different behavior in the binding force between\nparticles at large and at small distances (in comparison with the wavelength)\nfrom each other. This is due to the great contribution of evanescent waves at\nshort distances. We analyze how the optical binding depends of the size of the\nparticles, the material composing them, the wavelength and, above all, on the\npolarization of the incident beam. We also show that depending on the\npolarization, the force between small particles at small distances changes its\nsign. Finally, the presence of a substrate surface is analyzed showing that it\nonly slightly changes the magnitudes of the forces, but not their qualitative\nnature, except when one employs total internal reflection, case in which the\nparticles are induced to move together along the surface.",
"arxiv_id": "physics/0305045",
"authors": [
"P. C. Chaumet",
"M. Nieto-Vesperinas"
],
"categories": [
"physics.optics",
"physics.comp-ph"
],
"doi": "10.1103/PhysRevB.64.035422",
"journal_ref": "Phys. Rev. B, vol 64, 035422 (2001)",
"title": "Optical binding of particles with or without the presence of a flat dielectric surface",
"url": "https://arxiv.org/abs/physics/0305045"
},
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