Optical pulling force on a magneto-dielectric Rayleigh sphere in Bessel tractor polarized beams

Mitri, F.G.; Li, R.X.; Yang, Ruike; Guo, Lixin; Ding, Chunying

doi:10.1016/j.jqsrt.2016.07.023

Cited by 53 publications

(14 citation statements)

References 71 publications

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“…OPF has attracted considerable attention due to its many applications such as optical sorting [19,20], self-assembling, remote sampling [21,22], miniaturization of nanodevices [23] and enantioselective manipulation [24][25][26][27][28][29] (see [30] for a recent review). In particular, it was both theoretically and experimentally shown that nondiffracting Bessel beams can pull a sub-wavelength dielectric sphere [15,22,31]. Several approaches exist to demonstrate OPF on homogeneous dielectric spherical particles using bichromatic fields [32], multiple plane waves [33,34] and with optical gain [35,36].…”

Section: Introductionmentioning

confidence: 99%

Tailoring optical pulling forces with composite microspheres

Ali,

Pinheiro,

Dutra

et al. 2020

Preprint

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Optical pulling forces or tractor beams can pull particles against light propagation by redirecting the incident photons forward. This is typically achieved using Bessel beams with very small halfcone angles, which considerably limits its applicability. One can circumvent such issue by using a superposition of plane waves. In order to investigate optical pulling forces exerted by a pair of noncolinear plane waves, we develop a theoretical framework based on Mie theory, Debye potentials and Wigner rotation matrices. We apply this framework to calculate the optical pulling force on metallodielectric composite particles, which we put forward as an alternative material platform to optimize and tailor tractor beams. Indeed we demonstrate that by adding a few plasmonic inclusions to lowrefractive index dielectric particles of arbitrary sizes, we are able to produce polarization dependent optical pulling forces that cannot occur in the corresponding homogeneous particles. Altogether our findings not only provide innovative theoretical methods to compute optical pulling forces, but also provide new strategies to tailor and optimize them, paving the way to increase their applicability.

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Section: Introductionmentioning

confidence: 99%

Tailoring optical pulling forces with composite microspheres

Ali,

Pinheiro,

Dutra

et al. 2020

Preprint

View full text Add to dashboard Cite

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“…Generally, optical forces can be decomposed into gradient and scattering-plus-absorption force 1 , 7 , 14 , 15 . Depending on physical properties (such as dielectric properties, magnetization characteristic) of the particles and the environment 1 , 11 , 14 , the optical forces on particles can be attractive or repulsive 15 – 18 .…”

Section: Introductionmentioning

confidence: 99%

Investigation of optical force on magnetic nanoparticles with magnetic-fluid-filled Fabry-Perot interferometer

Yao

Rao

et al. 2018

Sci Rep

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The optical force acting on the magnetic nanoparticles (MNPs) is investigated with the magnetic-fluid-filled fiber-optic Fabry-Perot interferometer. The shift of interference spectra is related with the local refractive index variation in the light path, which is assigned to the optical-force-induced outward movement of MNPs. The influence of magnetic fluid’s viscosity, ambient temperature, strength and orientation of the externally applied magnetic field on the optical-force-induced MNPs’ movement is studied in details. The results of this work provide a further understanding of interaction between light and MNPs and clarify the dynamic micro-processes of MNPs within magnetic fluid under external stimuli. It may have the potentials in the fields of light-controllable magnetic-fluid-based devices and vector magnetic field detection.

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“…Moreover, the HOBVB resists diffraction over an extended distance of several wavelengths, and has the capability to reform [35][36][37][38] after encountering an obstruction, as long as the whole beam is not blocked. In addition, a HOBVB has the capability of inducing a negative pulling radiation force [39][40][41][42][43][44] as well as spin [45,46] and orbital [46] torque reversal [45][46][47][48] depending on the beam parameters.…”

Section: Introductionmentioning

confidence: 99%

“…All these properties make the optical HOBVB an attractive candidate from the standpoint of particle manipulation and handling applications. Various investigations recognizing the importance and utility of the HOBVB considered the case of a sphere, and examined the resonance scattering [49], radiation forces [42,43,50,51] and torques [45,46,48]. Nonetheless, in some instances, the actual shapes of a variety of objects deviate significantly from the spherical geometry.…”

Section: Introductionmentioning

confidence: 99%

Optical Bessel beam illumination of a subwavelength prolate gold (Au) spheroid coated by a layer of plasmonic material: radiation force, spin and orbital torques

Mitri

2017

J. Phys. Commun.

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The optical radiation force, spin and orbital torques exerted on a subwavelength prolate gold spheroid coated by a layer of plasmonic material with negative permittivity and illuminated by either a zerothorder (non-vortex) or a first-order vector Bessel (vortex) beam are computed in the framework of the electric dipole approximation method. Calculations for the Cartesian components of the optical radiation force on a subwavelength spheroid with arbitrary orientation in space are performed, with emphasis on the order (or topological charge), half-cone angle of the beam, and the plasmonic layer thickness on-and off-resonance. A repulsive (pushing) force is predicted for the layered subwavelength prolate spheroid, on-and off-resonance along the direction of wave propagation. Moreover, the Cartesian components of the spin radiation torque are computed where a negative longitudinal spin torque component can arise, suggesting a rotational twist of the spheroid around its center of mass in either the counter-clockwise or the clockwise (negative) direction of spinning. In addition, the longitudinal component of the orbital radiation torque exhibits sign reversal, indicating a revolution around the beam axis in either the counter-clockwise or the clockwise directions. The results show that the plasmonic resonance strongly alters the force, spin and orbital torque components, causing major amplitude enhancements, signs twists, and complex distributions in the transverse plane.

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Optical pulling force on a magneto-dielectric Rayleigh sphere in Bessel tractor polarized beams

Cited by 53 publications

References 71 publications

Tailoring optical pulling forces with composite microspheres

Tailoring optical pulling forces with composite microspheres

Investigation of optical force on magnetic nanoparticles with magnetic-fluid-filled Fabry-Perot interferometer

Optical Bessel beam illumination of a subwavelength prolate gold (Au) spheroid coated by a layer of plasmonic material: radiation force, spin and orbital torques

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