Ontology highlight
ABSTRACT:
SUBMITTER: Liaw JW
PROVIDER: S-EPMC6107535 | biostudies-literature | 2018 Aug
REPOSITORIES: biostudies-literature
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]