Optical manipulation: from fluid to solid domains

Jia, Qiannan; Lyu, Wei; Yan, Wei; Tang, Weiwei; Lu, Jinsheng; Qiu, Min

doi:10.3788/pi.2023.r05

Cited by 17 publications

(3 citation statements)

References 387 publications

(699 reference statements)

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“…Therefore, the optical pressures measured in this study are expected to surpass the combined adhesive forces on the surface at the air-liquid interface (ALI) following the enhancement process. This includes the crucial Van der Waals force, as evidenced by a comparison to the data obtained by Kundu et al [48] and Jia et al [49]. However, a detailed study of this phenomenon in relation to the trapping of nanoparticles along the ALI is beyond the scope of this article and will be the subject of future research.…”

Section: Discussionmentioning

confidence: 56%

Photonic Hook Initiated Using an Air–Liquid Interface

Yue,

Yan,

Wang

et al. 2023

Photonics

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In this paper, we demonstrate a novel photonic hook being initiated using an air–liquid interface (ALI). This bent light focus is produced by immersing a dielectric micro-cylinder partially at the edge of a thin liquid film whose thickness is smaller than the diameter of the micro-cylinder. Unlike the well-known properties of normal near-field focuses, this photonic hook propagates horizontally in the liquid along the ALI at specific depths and does not require the material processing of microscopic particles or the modulation of light irradiation for initiation. A morphological analysis indicates that the contrast in the refractive indexes of the ALI causes this phenomenon at the shadow end of the micro-cylinder with a transverse dimension smaller than the diffraction limit. Compared to previously discovered photonic hooks, the unique setup of this photonic hook can generate a force field that enables optical trapping in the region slightly beneath the ALI, and the related optical pressures have been simulated.

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Section: Discussionmentioning

confidence: 56%

Photonic Hook Initiated Using an Air–Liquid Interface

Yue,

Yan,

Wang

et al. 2023

Photonics

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“…Currently, methods for capturing and manipulating various micro-objects are being actively studied [1][2][3][4][5][6][7][8][9][10][11][12][13][14], in particular, using optical tweezers (optical traps) [13][14][15][16][17][18]. The use of optical traps has been shown to trap proteins, viruses, and vesicles not only theoretically, but also experimentally [19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

The Features of the Optical Traps Formation Using Silicon Ring Gratings with Variable Height

Savelyev

2023

Photonics

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Features of the diffraction of Gaussian beams and Laguerre–Gaussian modes on subwavelength optical 3D microstructures with variable relief heights are calculated and studied in this paper. Silicon subwavelength ring gratings and diffraction axicons were considered as such optical microstructures. The height of individual relief elements varied. The propagation of laser light through the proposed optical elements was simulated using the finite difference time domain (FDTD) method. It was shown that it is possible to select the height of individual relief rings of ring gratings in such a way that it is possible to reduce the size of the focal spot down to 0.36 λ, form an extended light segment (up to 5.79 λ), and form optical traps.

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“…In a recent review paper published in Photonics Insights , Min Qiu and colleagues provide an extensive overview of optical manipulation and its applications [9] . The authors begin by discussing the physics behind trapping forces and torques of laser beams in both Rayleigh and Mie regimes, as well as the origin of light-induced phoretic forces such as thermo-electricity, thermophoresis, and photo-phoresis.…”

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confidence: 99%