0477932 - ÚPT 2018 RIV US eng J - Článek v odborném periodiku
Simpson, Stephen Hugh - Zemánek, Pavel - Marago, O. M. - Jones, P.H. - Hanna, S.
Optical Binding of Nanowires.
Nano Letters. Roč. 17, č. 6 (2017), s. 3485-3492. ISSN 1530-6984. E-ISSN 1530-6992
Grant CEP: GA ČR GB14-36681G
Grant ostatní: AV ČR(CZ) CNR-16-12
Program: Bilaterální spolupráce
Institucionální podpora: RVO:68081731
Klíčová slova: optical binding nanowires * Brownian motion * self-organization * non-equilibrium thermodynamics * non-equilibrium steady state * spin-orbit coupling * emergent phenomena
Obor OECD: Optics (including laser optics and quantum optics)
Impakt faktor: 12.080, rok: 2017 ; AIS: 4.291, rok: 2017
DOI: https://doi.org/10.1021/acs.nanolett.7b00494

Multiple scattering of light induces structured interactions, or optical binding forces, between collections of small particles. This has been extensively studied in the case of microspheres. However, binding forces are strongly shape dependent: here, we turn our attention to dielectric nanowires. Using a novel numerical model we uncover rich behavior. The extreme geometry of the nanowires produces a sequence of stationary and dynamic states. In linearly polarized light, thermally stable ladder-like structures emerge. Lower symmetry, sagittate arrangements can also arise, whose configurational asymmetry unbalances the optical forces leading to nonconservative, translational motion. Finally, the addition of circular polarization drives a variety of coordinated rotational states whose dynamics expose fundamental properties of optical spin. These results suggest that optical binding can provide an increased level of control over the positions and motions of nanoparticles, opening new possibilities for driven self-organization and heralding a new field of self-assembling optically driven micromachines.
Trvalý link: http://hdl.handle.net/11104/0274144