Enantioselective optical forces in gain-functionalized single core-shell chiral nanoparticles

Ali, R.; Pinheiro, F. A.; Dutra, R. S.; Alegre, T. P. Mayer; Wiederhecker, G. S.

doi:10.1103/physreva.108.043704

Phys. Rev. A

2023

DOI: 10.1103/physreva.108.043704

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Enantioselective optical forces in gain-functionalized single core-shell chiral nanoparticles

R. Ali,

F. A. Pinheiro,

R. S. Dutra

et al.

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2024

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Cited by 3 publications

References 58 publications

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Enantioselective optical forces and size-dependent sorting of single chiral particles using vortex beams

Ali,

Pinheiro,

Dutra

et al. 2024

Phys. Rev. B

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Enantioselective optical forces and size-dependent sorting of single chiral particles using vortex beams

Ali,

Pinheiro,

Dutra

et al. 2024

Phys. Rev. B

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Interception force assisted optical pulling of a dipole nanoparticle in a single plane wave

Lu,

Wen,

et al. 2024

Opt. Express

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The optical pulling force is generally believed to originate from the recoil force due to the simultaneous excitation of multipoles in the particle, which overcomes the interception force contributing to the optical pushing force. However, we show that the interception force can induce optical pulling force on a small isotropic spherical particle with gain in a uniform electromagnetic plane wave, in which multipole excitation is negligible within the dipole regime. Based on the multipole expansion theory, a rigorous analytical expression is derived for optical force acting on a spherical particle of arbitrary size and composition illuminated by a single plane wave, regardless of its polarization. The analytical results show that the interception force, which is typically positive in a conventional dielectric particle under illumination of a single plane wave, undergoes a crossover from positive to negative by introducing appropriate gain into the dipolar dielectric nanoparticle, thereby giving rise to the optical pulling. It’s deserved to be noted that the optical pulling force assisted by the interception force does not weaken in magnitude, in fact, it exhibits a stronger magnitude compared to the optical pushing force experienced by a corresponding conventional dielectric particle.

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Optical Forces on Chiral Particles: Science and Applications

Yi,

Huang,

Lai

et al. 2024

Micromachines

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Chiral particles have attracted considerable attention due to their distinctive interactions with light, which enable a variety of cutting-edge applications. This review presents a comprehensive analysis of the optical forces acting on chiral particles, categorizing them into gradient force, radiation pressure, optical lateral force, pulling force, and optical force on coupled chiral particles. We thoroughly overview the fundamental physical mechanisms underlying these forces, supported by theoretical models and experimental evidence. Additionally, we discuss the practical implications of these optical forces, highlighting their potential applications in optical manipulation, particle sorting, chiral sensing, and detection. This review aims to offer a thorough understanding of the intricate interplay between chiral particles and optical forces, laying the groundwork for future advancements in nanotechnology and photonics.

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Enantioselective optical forces in gain-functionalized single core-shell chiral nanoparticles

Cited by 3 publications

References 58 publications

Enantioselective optical forces and size-dependent sorting of single chiral particles using vortex beams

Enantioselective optical forces and size-dependent sorting of single chiral particles using vortex beams

Interception force assisted optical pulling of a dipole nanoparticle in a single plane wave

Optical Forces on Chiral Particles: Science and Applications

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