Linear momentum increase and negative optical forces at dielectric interface

Kajorndejnukul, Veerachart; Ding, Weiqiang; Sukhov, Sergey; Qiu, Cheng‐Wei; Dogariu, Aristide

doi:10.1038/nphoton.2013.192

Cited by 145 publications

(153 citation statements)

References 28 publications

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“…Interestingly, nonMinkowskian formulations exhibit a pushing force, which contradicts the experimental observation reported in Ref. 22. However, although our suggested interpretation supports only the Minkowski approach for the process of optical momentum transfer to the embedded scatterer (near the scatterer and the dielectric interface), the photon momentum in a continuous background medium should be regarded as the Abraham type.…”

Section: Introductioncontrasting

confidence: 82%

“…40 and demonstrated in Ref. 22, the background medium also plays an important role in the generation of a tractor beam. To obtain a pulling force with a structured background as in Ref.…”

Section: Methodsmentioning

confidence: 92%

“…To obtain a pulling force with a structured background as in Ref. 22, however, the hydrodynamic effect, a convection current and uneven heating all must be present. By contrast, in our scenario, it can be observed that even if such effects are omitted, it is possible to change the magnitude of the optical pulling force simply by modifying the frequency of the light source, the difference in the refractive indexes of the two background media (the refractive index of the final background medium should be higher than that of the previous medium (or media) to achieve optical pulling), and the shape or size of the submerged particle.…”

Section: Methodsmentioning

confidence: 99%

“…20,21 Recently, various types of tractor beams have been experimentally demonstrated using a Gaussian beam with an optical mirror (involving the interference of incident and reflected light beams in certain limited regions) 8 and using dodecane droplets sitting on a dielectric interface. 22 However, in the presence of a high-powered laser, hydrodynamic effects (uneven heat dissipation, particle absorption, temperature gradients, liquid convection, surface energy wells, etc.) may also contribute.…”

Section: Introductionmentioning

confidence: 99%

“…Although the mechanical effect has been demonstrated 22 to be an overall consequence of all possible contributing factors, the mechanism of the optical momentum transfer from a mixed bi-medium background (air and water) to a partially submerged particle remains unclear, particularly regarding the issue of the proper stress tensor and force law to be adopted for non-vacuum backgrounds. Indeed, there are various forms of photon momentum, and various stress tensors, but why can only the Minkowski momentum be applied in this case?…”

Section: Introductionmentioning

confidence: 99%

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Photon momentum transfer in inhomogeneous dielectric mixtures and induced tractor beams

et al. 2015

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The determination of optical force as a consequence of momentum transfer is inevitably subject to the use of the proper momentum density and stress tensor. It is imperative and valuable to consider the intrinsic scheme of photon momentum transfer, particularly when a particle is embedded in a complex dielectric environment. Typically, we consider a particle submerged in an inhomogeneous background composed of different dielectric materials, excluding coherent illumination or hydrodynamic effects. A ray-tracing method is adopted to capture the direct process of momentum transfer from the complex background medium, and this approach is validated using the modified Einstein-Laub method, which uses only the interior fields of the particle in the calculation. In this way, debates regarding the calculation of the force with different stress tensors using exterior fields can be avoided. Our suggested interpretation supports only the Minkowski approach for the optical momentum transfer to the embedded scatterer while rejecting Peierls's and Abraham's approaches, though the momentum of a stably moving photon in a continuous background medium should be considered to be of the Abraham type. Our interpretation also provides a novel method of realizing a tractor beam for the exertion of negative force that offers an alternative to the use of negative-index materials, optical gain, or highly non-paraxial or multiple-light interference. Keywords: dielectric interface; Minkowski photon momentum transfer; modified Einstein-Laub method; optical pulling force; optical tractor beams INTRODUCTIONFollowing the pioneering work of Marston 1 in acoustics, optical 'tractor beams' have attracted considerable interest by virtue of their unusual mechanism for micromanipulation. [2][3][4][5][6][7][8][9][10][11][12][13] Generally speaking, a tractor beam is a customized light beam that exerts a negative scattering force (NSF) on a scatterer and pulls it opposite to the propagation direction of the light, in contrast to conventional pushing forces. 14 Optical pulling forces provide a novel approach to gradientless optical manipulation techniques distinct from optical tweezers, 15-17 optical conveyors 13,18,19 and nanooptomechanical systems. 20,21 Recently, various types of tractor beams have been experimentally demonstrated using a Gaussian beam with an optical mirror (involving the interference of incident and reflected light beams in certain limited regions) 8 and using dodecane droplets sitting on a dielectric interface. 22 However, in the presence of a high-powered laser, hydrodynamic effects (uneven heat dissipation, particle absorption, temperature gradients, liquid convection, surface energy wells, etc.) may also contribute. Moreover, the stability criteria for tractor beams, which are very important for practical application, have not yet been investigated.Although the mechanical effect has been demonstrated 22 to be an overall consequence of all possible contributing factors, the mechanism of the optical momentum transfer from a mixe...

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Section: Introductioncontrasting

confidence: 82%

“…40 and demonstrated in Ref. 22, the background medium also plays an important role in the generation of a tractor beam. To obtain a pulling force with a structured background as in Ref.…”

Section: Methodsmentioning

confidence: 92%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Photon momentum transfer in inhomogeneous dielectric mixtures and induced tractor beams

et al. 2015

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Optical Forces: From Fundamental to Biological Applications

et al. 2020

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Optical forces, generally arising from changes of field gradients or linear momentum carried by photons, form the basis for optical trapping and manipulation. Advances in optical forces help to reveal the nature of light–matter interactions, giving answers to a wide range of questions and solving problems across various disciplines, and are still yielding new insights in many exciting sciences, particularly in the fields of biological technology, material applications, and quantum sciences. This review focuses on recent advances in optical forces, ranging from fundamentals to applications for biological exploration. First, the basics of different types of optical forces with new light–matter interaction mechanisms and near‐field techniques for optical force generation beyond the diffraction limit with nanometer accuracy are described. Optical forces for biological applications from in vitro to in vivo are then reviewed. Applications from individual manipulation to multiple assembly into functional biophotonic probes and soft‐matter superstructures are discussed. At the end future directions for application of optical forces for biological exploration are provided.

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Advances in Full Control of Electromagnetic Waves with Metasurfaces

Zhang

Mei

Huang

et al. 2016

Advanced Optical Materials

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Metasurfaces, two‐dimensional versions of metamaterials, retain the great capabilities of three‐dimensional counterparts in manipulating electromagnetic wave behaviors, while reducing the challenges in fabrication. By judiciously engineering parameters of individual building blocks (such as geometry, size, and material) and selecting specific design algorithms, metasurfaces are promising to replace conventional electromagnetic elements in nanoplasmonic/photonic devices. Significantly, such concept can be readily promoted to other disciplines, such as acoustics, thermal physics, and seismology. In this article, the latest advances in full control of electromagnetic waves with metasurfaces are briefly reviewed from a functionality perspective. A broad avenue towards real‐life applications of metamaterials has been opened up, although they are still at their infant stage. At the end, several promising approaches are suggested to extend the applications of metasurfaces.

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Linear momentum increase and negative optical forces at dielectric interface

Cited by 145 publications

References 28 publications

Photon momentum transfer in inhomogeneous dielectric mixtures and induced tractor beams

Photon momentum transfer in inhomogeneous dielectric mixtures and induced tractor beams

Optical Forces: From Fundamental to Biological Applications

Advances in Full Control of Electromagnetic Waves with Metasurfaces

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