Electromagnetic force on a metallic particle in the presence of a dielectric surface.
TLDR
In this paper, the force of light upon a metallic particle is computed based on both the stress tensor and the couple dipole method, and the behavior of this force on either a small or a large particle in terms of the wavelength is analyzed.Abstract:
By using a method, previously established, to calculate electromagnetic fields, we compute the force of light upon a metallic particle. This procedure is based on both Maxwell's stress tensor and the couple dipole method. With these tools, we study the force when the particle is over a flat dielectric surface. The multiple interaction of light between the particle and the surface is fully taken into account. The wave illuminating the particle is either evanescent or propagating depending an whether or not total internal reflection takes place. We analyze the behavior of this force on either a small or a large particle in terms of the wavelength. A remarkable result obtained for evanescent field illumination is that the force on a small silver particle can be either attractive or repulsive depending on the wavelength. This behavior also varies as the particle becomes larger.read more
Citations
More filters
Journal ArticleDOI
Optical manipulation of nanoparticles: a review
TL;DR: In this paper, the authors present several theoretical approaches to calculate the optical forces exerted on trapped nanoparticles and compare them with the results of a single-beam optical trap, and a close look into the key experiments to date demonstrates the feasibility of trapping and provides a grasp of the enormous possibilities that remain to be explored.
Journal ArticleDOI
Colloquium: Gripped by light: Optical binding
Kishan Dholakia,Pavel Zemánek +1 more
TL;DR: In this article, the importance of exploring the optically mediated interaction between assembled objects that can cause attractive and repulsive forces and dramatically influence the way they assemble and organize themselves is discussed.
Journal ArticleDOI
Optical forces on small magnetodielectric particles
TL;DR: The origin and significance of the self-interaction force between both dipoles is discussed in connection with that of the angular distribution of scattered light and of the extinction cross section.
Journal ArticleDOI
Surface Plasmon Radiation Forces
TL;DR: Measurements performed as a function of the probe particle size indicate that optical manipulation by plasmon fields has a strong potential for optical sorting.
Journal ArticleDOI
Angle-suppressed scattering and optical forces on submicrometer dielectric particles.
TL;DR: It is shown that submicrometer silicon spheres, whose polarizabilities are completely given by their two first Mie coefficients, are an excellent laboratory to test effects of both angle-suppressed and resonant differential scattering cross sections.
References
More filters
Journal ArticleDOI
Classical Electrodynamics (2nd edn)
TL;DR: The present edition of this now classic text offers substantial refinements and improvements over the first edition and includes some new material as mentioned in this paper, including an improved derivation of the macroscopic equations, monopoles, causality and dispersion relations, signal propagation in a dispersive media.