Tailoring Optical Forces Behavior in Nano-optomechanical Devices Immersed in Fluid Media

Rodrigues, Janderson R.; Almeida, Vilson R.

doi:10.1038/s41598-017-14777-z

Cited by 4 publications

(3 citation statements)

References 21 publications

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“…Thus light can be used to manipulate particles, molecules or mesoscale objects [3][4][5][6]. Direct manipulation of objects through light-induced forces has led to formidable progress, impacting research in many areas ranging from ultra-cold matter physics [7], biology [8,9], microfluidics [10,11], optical printing [12], to optical engineering [13][14][15][16][17] among other fields. For example, demonstration of levitation and trapping of micron-sized particles by radiation pressure dates back to 1970 [18].…”

Section: Introductionmentioning

confidence: 99%

Optical forces and torques exerted on coupled silica nanospheres: novel contributions due to multiple scattering

Ekeroth

2019

J. Opt.

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Optically coupled nanoparticles suffer the action of multiple electromagnetic forces when they are illuminated by light. In general, two kinds of forces are commonly assumed: binding forces that make them attract/repel each other and scattering forces that push the system forwards. Tangential forces and orbital torques can also be induced to align the dimer with the electric field. In this work, new degrees of freedom are found for a dimer of silica nanospheres under illumination with linearlypolarized plane waves. The results have a general validity for arbitrary mesoscale systems: multiple scattering of light induces unexpected torques and unbalanced forces. These torques include spin contributions to the movement of the whole system.The results are supported by previous works and pave the way for the engineering of nanoscale devices and nanorotators. Any application which is based on photonics at mesoscales should take into account the new movements predicted here.

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Section: Introductionmentioning

confidence: 99%

Optical forces and torques exerted on coupled silica nanospheres: novel contributions due to multiple scattering

Ekeroth

2019

J. Opt.

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“…metal plates) in the GHz domain; recall that water in this regime exhibits a large refractive index with relatively low absorption, which makes it suitable for tunable high-index-dielectric metamaterials [26]. Actually, this scenario could also be realized for higher frequencies up to the near-IR regime, which is in turn suitable for optical trapping and manipulation of microscopic particles through optical tweezers [39][40][41]. The lower-refractive index of water (or other liquids) in this electromagnetic regime comes only at the expense of requiring thicker waveguides.…”

Section: Spin-orbit Interactions Inside Nanophotonic Waveguidesmentioning

confidence: 99%

Spin Angular Momentum of Guided Light Induced by Transverse Confinement and Intrinsic Helicity

Abujetas

Sánchez‐Gil

2020

ACS Photonics

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In recent years, extraordinary spin angular momenta have been investigated in a variety of structured electromagnetic waves, being of especial interest in sub-wavelength evanescent fields. Here we demonstrate analytically that, in planar and cylindrical waveguides supporting transverse electric/magnetic modes, transverse spin density arises inside the waveguide (different from the spin induced in the evanescent region outside the waveguide), carrying indeed longitudinal extraordinary (so-called) Belinfante's spin momentum. Such contribution depends linearly on the mode transverse wave vector, and is thus induced by mode confinement. Cylindrical waveguides support in addition hybrid modes that exhibit a richer phenomenology with not only azimuthal (confinementrelated) spin, but also an intrinsic helicity which leads to longitudinal spin density and transverse helicity-dependent spin momentum. Results are indeed presented for configurations relevant to spinorbit coupling in nanophotonic waveguides and to manipulating optical forces in IR-to-microwave water-filled channels. Thus guided modes intrinsically carrying confinement-induced transverse spin, combined with intrinsic-helicity-induced longitudinal spin (when hybrid), hold promise of superb devices to control spin-orbit interaction and optical forces within confined geometries throughout the electromagnetic spectra.

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“…An optical repulsive force was then discovered between two suspending nanowaveguides by tuning the phase from the symmetric to asymmetric modes [76,77]. The optical repulsive force is further studied in the case, whereby the optomechanical device is immersed in the fluid media [78]. Based on a slot-waveguide structure, the optical repulsive force increases with increasing the fluid medium's refractive index under the condition of the same slot gap.…”

Section: Light-particle Interactions For Biomedical Applicationsmentioning

confidence: 99%

Optical Forces in Silicon Nanophotonics and Optomechanical Systems: Science and Applications

Chin

Shi

Liu

2020

Adv Devices Instrum

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Light-matter interactions have been explored for more than 40 years to achieve physical modulation of nanostructures or the manipulation of nanoparticle/biomolecule. Silicon photonics is a mature technology with standard fabrication techniques to fabricate micro- and nano-sized structures with a wide range of material properties (silicon oxides, silicon nitrides, p- and n-doping, etc.), high dielectric properties, high integration compatibility, and high biocompatibilities. Owing to these superior characteristics, silicon photonics is a promising approach to demonstrate optical force-based integrated devices and systems for practical applications. In this paper, we provide an overview of optical force in silicon nanophotonic and optomechanical systems and their latest technological development. First, we discuss various types of optical forces in light-matter interactions from particles or nanostructures. We then present particle manipulation in silicon nanophotonics and highlight its applications in biological and biomedical fields. Next, we discuss nanostructure mechanical modulation in silicon optomechanical devices, presenting their applications in photonic network, quantum physics, phonon manipulation, physical sensors, etc. Finally, we discuss the future perspective of optical force-based integrated silicon photonics.

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Tailoring Optical Forces Behavior in Nano-optomechanical Devices Immersed in Fluid Media

Cited by 4 publications

References 21 publications

Optical forces and torques exerted on coupled silica nanospheres: novel contributions due to multiple scattering

Optical forces and torques exerted on coupled silica nanospheres: novel contributions due to multiple scattering

Spin Angular Momentum of Guided Light Induced by Transverse Confinement and Intrinsic Helicity

Optical Forces in Silicon Nanophotonics and Optomechanical Systems: Science and Applications

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