Negative optical torque in spin-dependent 2D chiral nanomotor due to dipolar scattering
Sign Up to like & getrecommendations! Published in 2021 at "Optics Communications"
DOI: 10.1016/j.optcom.2020.126560
Abstract: Abstract We numerically studied the spin-dependent optical torque on a 2D chiral plasmonic nanomotor excited by circularly polarized lights. An interesting phenomenon of so-called negative optical torque is demonstrated on condition that the scattering optical… read more here.
Keywords: negative optical; spin dependent; chiral nanomotor; optical torque ... See more keywords
Crossover from positive to negative optical torque in mesoscale optical matter
Sign Up to like & getrecommendations! Published in 2018 at "Nature Communications"
DOI: 10.1038/s41467-018-07376-7
Abstract: The photons in circularly polarized light can transfer their quantized spin angular momentum to micro- and nanostructures via absorption and scattering. This normally exerts positive torque on the objects wher the sign (i.e., handedness or… read more here.
Keywords: positive negative; negative optical; optical matter; optical torque ... See more keywords
Gain-induced large optical torque in optical twist settings
Sign Up to like & getrecommendations! Published in 2020 at "Chinese Physics B"
DOI: 10.1088/1674-1056/ab9616
Abstract: Inducing a significant optical torque remains a challenging task, since the law of angular momentum conservation implies that one has to harvest a lot of light. Such problem was partially resolved by using optical twist… read more here.
Keywords: torque optical; gain; optical torque; optical twist ... See more keywords
Creating stable trapping force and switchable optical torque with tunable phase of light
Sign Up to like & getrecommendations! Published in 2022 at "Science Advances"
DOI: 10.1126/sciadv.add6664
Abstract: Light-induced rotation of microscopic objects is of general interest as the objects may serve as micromotors. Such rotation can be driven by the angular momentum of light or recoil forces arising from special light-matter interactions.… read more here.
Keywords: creating stable; optical torque; phase light; phase ... See more keywords
Anomalously enhanced transverse optical torque on a dipolar plasmonic nanoparticle in two-wave interference.
Sign Up to like & getrecommendations! Published in 2022 at "Optics letters"
DOI: 10.1364/ol.476994
Abstract: Based on the multipole expansion theory, we show that a transverse optical torque acting on a dipolar plasmonic spherical nanoparticle can be anomalously enhanced in two plane waves with linear polarization. Compared with a homogeneous… read more here.
Keywords: anomalously enhanced; nanoparticle; transverse optical; dipolar plasmonic ... See more keywords