Optical radiation forces of focused Gaussian beams on the three-layered microgel particles with near-infrared responses

Ju, Wei Jhong; Yao, Jie; Ding, He-Ping; Wu, Da‐Jian

doi:10.1007/s00339-019-2934-9

Cited by 1 publication

(1 citation statement)

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“…In 1991, Wu [20] proposed an algorithm to calculate the electromagnetic scattering of stratified spheres, which solved the overflow error caused by the recursion of the Ricatti-Bessel function in the program, and obtained a more stable and accurate calculation result. On this basis, Ju et al [21] researched the optical RF on a three-layered microgel particle by a focused laser beam based on the GLMT, and derived the results that negative RF can be generated when the appropriate working wavelength is adjusted. Chen et al [22] analyzed the scattering of multilayered spheres by zero-order vector Bessel beam, and presented numerical consequences for the effect of various parameters on the far-field scattering intensity.…”

Section: Introductionmentioning

confidence: 99%

Optical manipulation of anisotropic spherical shell particles in a dual-beam trap

Bai,

Gao,

et al. 2024

Phys. Scr.

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In this paper, based on the generalized Lorenz-Mie theory (GLMT), expressions for the scattering coefficient and the shape factor of the beam are derived for a uniaxial anisotropic spherical shell (UASS) particle illuminated by standing laser beams. Through a comprehensive analysis involving the Maxwell stress tensor equations and conservation law of electromagnetic momentum, explicit expressions for both the transverse and axial radiation force (RF) acting upon UASS particles have been analytically derived. The current theories are shown to be valid by comparison with the existing reference. To achieve a more stable capture of UASS particles, the influence of the corresponding parameters of the particle and the dual laser beams on the capture and manipulation is investigated in detail. These investigations could provide an effective way to achieve improvements in optical tweezers and can become an encouraging approach to realize the high accuracy operation of UASS particles.

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Section: Introductionmentioning

confidence: 99%