Breaking boundaries in optical manipulation: beyond Nobel-Prize-winning tweezers

Kollipara, Pavana Siddhartha; Zheng, Yuebing

doi:10.3788/pi.2023.c04

Cited by 1 publication

(1 citation statement)

References 14 publications

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“…ARNESSING optical forces and torques on nano/microparticles show unprecedented advantages in physical and biomedical applications [1], [2], [3], such as quantum levitation [4], [5], DNA folding and stretching [6], [7], bioparticle screening and therapy [8], [9], [10], [11], [12], etc. Though conventional optical forces such as gradient [13], [14], scattering [15], [16] and photophoretic forces [17], [18], [19] have been synergistically utilized for manifold applications, exotic forces such as optical pulling force (OPF) and optical lateral force (OLF) have only been exploited independently due to their normally distinct implementation approaches.…”

Section: Introductionmentioning

confidence: 99%

Dynamically Controllable Two-Dimensional Microvehicle by Coordinated Optical Pulling-Lateral Force

Shi,

Luo,

Xiong

et al. 2023

IEEE Photonics J.

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Harnessing exotic optical forces promises a plethora of biophysical applications and novel light-matter interactions. The exotic optical pulling force (OPF) and optical lateral force (OLF) have been studied separately, yet synthesizing both candidates simultaneously remains an unsolved challenge and could offer a more powerful manoeuvre of particles. Here, we report a coordinated scheme to harness these two forces together and present a dynamically controlled two-dimensional (2D) microvehicle. The strategy is to leverage unexplored helicitydependent features of both forces, while the particle size and incident angle of light can also reverse optical forces. The underlying physics of the pulling-lateral force is beyond the dipole approximation, and can be the combined effect from the linear momentum transfer, spin-orbit interactions, etc. Notably, the ratio of both forces can be dynamically and arbitrarily controlled by the ellipticity of incident light solely. The configured 2D microvehicle provides a nontrivial recipe other than using metastructures which require exquisite designs and subtle fabrication processes.

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