Unknown

Dataset Information

0

3D Optical Vortex Trapping of Plasmonic Nanostructure.


ABSTRACT: 3D optical vortex trapping upon a polystyrene nanoparticle (NP) by a 1D gold dimer array is studied theoretically. The optical force field shows that the trapping mode can be contact or non-contact. For the former, the NP is attracted toward a corresponding dimer. For the latter, it is trapped toward a stagnation point of zero force with a 3D spiral trajectory, revealing optical vortex. Additionally the optical torque causes the NP to transversely spin, even though the system is irradiated by a linearly polarized light. The transverse spin-orbit interaction is manifested from the opposite helicities of the spin and spiral orbit. Along with the growth and decline of optical vortices the trapped NP performs a step-like motion, as the array continuously moves. Our results, in agreement with the previous experiment, identify the role of optical vortex in the near-field trapping of plasmonic nanostructure.

SUBMITTER: Liaw JW 

PROVIDER: S-EPMC6107535 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

altmetric image

Publications

3D Optical Vortex Trapping of Plasmonic Nanostructure.

Liaw Jiunn-Woei JW   Chien Chiao-Wei CW   Liu Kun-Chi KC   Ku Yun-Cheng YC   Kuo Mao-Kuen MK  

Scientific reports 20180823 1


3D optical vortex trapping upon a polystyrene nanoparticle (NP) by a 1D gold dimer array is studied theoretically. The optical force field shows that the trapping mode can be contact or non-contact. For the former, the NP is attracted toward a corresponding dimer. For the latter, it is trapped toward a stagnation point of zero force with a 3D spiral trajectory, revealing optical vortex. Additionally the optical torque causes the NP to transversely spin, even though the system is irradiated by a  ...[more]

Similar Datasets

| S-EPMC3977964 | biostudies-literature
| S-EPMC10885202 | biostudies-literature
| S-EPMC4558549 | biostudies-other
| S-EPMC3824164 | biostudies-literature
| S-EPMC4674800 | biostudies-other
| S-EPMC7827238 | biostudies-literature
| S-EPMC4309976 | biostudies-other
| S-EPMC7435250 | biostudies-literature
| S-EPMC10095977 | biostudies-literature
| S-EPMC7997922 | biostudies-literature