Reversal of wave momentum in isotropic left-handed media

Kemp, Brandon A.; Kong, Jin Au; Grzegorczyk, Tomasz M.

doi:10.1103/physreva.75.053810

Cited by 68 publications

(63 citation statements)

References 46 publications

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“…(27) and (29) below for the impedance-mismatched case] for both the electromagnetic momentum and the mechanical momentum. Kemp et al [26] claimed that the momentum flow in a left-handed material was opposite to the power flow direction, but this is incorrect as we show in the present paper. Veselago has noticed the incompatibility between the photon momentum flow and the energy transfer for electromagnetic waves in metamaterials, and assumed that the momentum inside a metamaterial is in the same direction as the wave vector [27], which is also incorrect as we show in the present paper.…”

Section: Introductioncontrasting

confidence: 54%

“…The inconsistency is supposed to stem from particle-wave duality [27]. Another formalism, based on the classical electromagnetic theory, has been developed in [26]. The definitions of momentum density, momentum stress tensor and Lorentz force, are different from those in our present paper.…”

Section: Discussionmentioning

confidence: 94%

“…The definitions of momentum density, momentum stress tensor and Lorentz force, are different from those in our present paper. Especially, the Lorentz force vanishes inside a lossless medium according to their formalism, and the force arising from the sudden change of electromagnetic stress tensor at the interface between vacuum and the metamaterial lacks a physical explanation [26].…”

Section: Discussionmentioning

confidence: 99%

“…Therefore, we conclude that, within the classical electrodynamics framework, the total momentum of electromagnetic waves in a metamaterial has the same direction as the energy flow, instead of as the wave vector [26,27].…”

Section: Momentum For the Case Of Matched Impedancementioning

confidence: 99%

“…However, far less attention has been paid to the investigation of the momentum for electromagnetic waves in metamaterials [15,26,27].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Consistent Formalism for the Momentum of Electromagnetic Waves in Lossless Dispersive Metamaterials and the Conservation of Momentum

He¹,

Shen²,

He³

2011

PIER

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Abstract-A new formalism for electromagnetic and mechanical momentum in a metamaterial is developed by means of the technique of wave-packet integrals.The medium has huge mass density and can therefore be regarded as almost stationary upon incident electromagnetic waves. A clear identification of the momentum density and momentum flow, including their electromagnetic and mechanical parts, is obtained by employing this formalism in a lossless dispersive metamaterial (including the cases of impedance matching and mismatching with vacuum). It is found that the ratio of the electromagnetic momentum density to the mechanical momentum density depends on the impedance and group velocity of the electromagnetic wave inside the metamaterial. One of the definite results is that both the electromagnetic momentum and the mechanical momentum in the metamaterial are in the same direction as the energy flow, instead of in the direction of the wave vector. The conservation of total momentum is verified. In addition, the law of energy conservation in the process of normal incidence is also verified by using the wave-packet integral of both the electromagnetic energy density and the mechanical energy density, of which the latter is caused by the interaction between the induced electric/magnetic currents and the electric/magnetic field components of the electromagnetic wave.

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Section: Introductioncontrasting

confidence: 54%

Section: Discussionmentioning

confidence: 94%

Section: Discussionmentioning

confidence: 99%

Section: Momentum For the Case Of Matched Impedancementioning

confidence: 99%

“…However, far less attention has been paid to the investigation of the momentum for electromagnetic waves in metamaterials [15,26,27].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Consistent Formalism for the Momentum of Electromagnetic Waves in Lossless Dispersive Metamaterials and the Conservation of Momentum

He¹,

Shen²,

He³

2011

PIER

View full text Add to dashboard Cite

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Classical and fluctuation‐induced electromagnetic interactions in micron‐scale systems: designer bonding, antibonding, and Casimir forces

et al. 2014

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Whether intentionally introduced to exert control over particles and macroscopic objects, such as for trapping or cooling, or whether arising from the quantum and thermal fluctuations of charges in otherwise neutral bodies, leading to unwanted stiction between nearby mechanical parts, electromagnetic interactions play a fundamental role in many naturally occurring processes and technologies. In this review, we survey recent progress in the understanding and experimental observation of optomechanical and quantumfluctuation forces. Although both of these effects arise from exchange of electromagnetic momentum, their dramatically different origins, involving either real or virtual photons, lead to different physical manifestations and design principles. Specifically, we describe recent predictions and measurements of attractive and repulsive optomechanical forces, based on the bonding and antibonding interactions of evanescent waves, as well as predictions of modified and even repulsive Casimir forces between nanostructured bodies. Finally, we discuss the potential impact and interplay of these forces in emerging experimental regimes of micromechanical devices.

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Optical Sorting of a Plasmonic or Dielectric or Chiral Mie Object Using a Single Metasurface

2021

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Identifying an object, be it of dielectric or plasmonic or chiral nature, by only using light beam is familiarized as optical sorting. As far as is known, a single optical setup is not reported so far, where these three different kinds of Mie sized particles can exhibit completely distinct behaviors. Chemical-based sorting of these various types of particles is still considered as a notable industrial problem due to the use of very expensive chemicals. This work presents a novel all-optical technique to distinguish classes of nanoscale Mie objects by separately placing them over a metasurface consisting of double-lined gold nanostructures. The proposed setup promotes an effective on-chip material-based optical sorting of silica (a dielectric object), gold (a plasmonic object), and chiral nanospheres by generating a dual surface plasmon polariton (SPP) energized plasmonic complex field, which induces fully different behaviors in Mie scatterers having dissimilar material properties. For instance, when simple plane wave is imposed underneath the metasurface, plasmonic object experiences the counterintuitive optical pulling force, dielectric object experiences pushing force, whereas the chiral object experiences optical lateral force. The proposed optical setup may introduce a new method of all-optical sorting without using chemicals or costly materials.

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Reversal of wave momentum in isotropic left-handed media

Cited by 68 publications

References 46 publications

Consistent Formalism for the Momentum of Electromagnetic Waves in Lossless Dispersive Metamaterials and the Conservation of Momentum

Consistent Formalism for the Momentum of Electromagnetic Waves in Lossless Dispersive Metamaterials and the Conservation of Momentum

Classical and fluctuation‐induced electromagnetic interactions in micron‐scale systems: designer bonding, antibonding, and Casimir forces

Optical Sorting of a Plasmonic or Dielectric or Chiral Mie Object Using a Single Metasurface

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