Analysis of electromagnetic propulsion on a two-electric-dipole system

Obara, Noriaki; Baba, Mamoru

doi:10.1002/(sici)1520-6432(200004)83:4<31::aid-ecjb4>3.0.co;2-b

Cited by 4 publications

(4 citation statements)

References 9 publications

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“…One of the consequences of the asymmetric interaction with the optical environment is the occurrence of a nonzero force acting on the center of mass of the bound system. The presence of such type of force was theoretically predicted for a pair of emitting dipoles placed nearby [5] and it also suggested for longitudinal optical binding [6]. In the past, we have shown that the action of nonconservative forces determines nonzero torques leading to a rotational motion of optically bound particles which are illuminated with circularly polarized light [7].…”

Section: Introductionmentioning

confidence: 65%

“…(5) is performed over a solid angle of 4π steradians; r is a unit vector corresponding to angle of integration and r ⊥ is its projection onto the dimer's axis. Formula (5) clearly shows that the transversal force on a dimer is determined by the radiation pattern of the scattering system. The presence of unequal particles makes this pattern asymmetric, as shown in the insert in Fig.…”

Section: System Of Dissimilar Particles In External Fieldmentioning

confidence: 99%

“…Another important conclusion can be derived from Eq. (5). Because in most cases one can simultaneously perform measurements on the field and on the particles, optical experiments offer unique possibilities to examine the role of conservation laws and symmetries in complex interacting systems.…”

Section: System Of Dissimilar Particles In External Fieldmentioning

confidence: 99%

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Actio et reactio in optical binding

Sukhov¹,

Shalin²,

Haefner³

et al. 2015

Opt. Express

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The symmetry in action and reaction between interacting particulate matter breaks down when the interaction is mediated by an out-of-equilibrium environment. Nevertheless, even in this case, the space translational invariance still imposes the conservation of canonical momentum. Here we show that optical binding of an asymmetric material system can result in non-reciprocal interactions between constituents. We demonstrate that a non-conservative force applies to the center of mass of an optically bound dimer of dissimilar particles, which leads to an unexpected action in the transversal direction. The sign and the magnitude of this positional force depend on the abrupt phase transitions in the properties of the asymmetric dimer.

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Section: Introductionmentioning

confidence: 65%

Section: System Of Dissimilar Particles In External Fieldmentioning

confidence: 99%

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Actio et reactio in optical binding

Sukhov¹,

Shalin²,

Haefner³

et al. 2015

Opt. Express

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show abstract

“…Therefore, as it is shown in Ref. [15], the propulsive force can result from the near-field and/or the far-field (radiative) mode, that is, it is not always the radiative mode of propulsion that can be useful under the point of view of practical engineering.…”

Section: Introductionmentioning

confidence: 99%

DEF: The Physical Basis of Electromagnetic Propulsion

Pinheiro¹

2015

Preprint

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The very existence of the physical vacuum provides a framework to propose a general mechanism for propelling bodies through an agency of electromagnetic fields, that seat in that medium. When two sub-systems of a general closed device interact via nonlocal and retarded electromagnetic pulses, it is easily shown that they give a nonzero force, and that only tend to comply with the action-to-reaction force in the limit of instantaneous interactions. The arrangement of sub-systems provide a handy way to optimize the unbalanced EM force with the concept of impedance matching.The general properties of the differential electromagnetic force (DEF) are the following: i) it is proportional to the square of the intensity and to the angular wave frequency ω; ii) to the space between the sub-systems (although in a non-linear manner); iii) it is inversely proportional to the speed of interaction; iv) when the two sub-systems are out-of-phase, DEF is null. The approach is of interest to practical engineering principles of propulsion since it offers guiding principles useful to build prototypes.

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Longitudinal and lateral interparticle optical binding and extrinsic radiation force and torque on a pair of lossless dielectric cylinders of arbitrary sizes and the acoustical analogue

Mitri

2021

Optik

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Analysis of electromagnetic propulsion on a two-electric-dipole system

Cited by 4 publications

References 9 publications

Actio et reactio in optical binding

Actio et reactio in optical binding

DEF: The Physical Basis of Electromagnetic Propulsion

Longitudinal and lateral interparticle optical binding and extrinsic radiation force and torque on a pair of lossless dielectric cylinders of arbitrary sizes and the acoustical analogue

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