0509089 - ÚPT 2020 RIV US eng J - Journal Article
Donato, M. G. - Brzobohatý, O. - Simpson, Stephen Hugh - Irrera, A. - Leonardi, A.A. - Lo Faro, M.J. - Svak, Vojtěch - Marago, O. M. - Zemánek, Pavel
Optical Trapping, Optical Binding, and Rotational Dynamics of Silicon Nanowires in Counter-Propagating Beams.
Nano Letters. Roč. 19, č. 1 (2019), s. 342-352. ISSN 1530-6984. E-ISSN 1530-6992
R&D Projects: GA ČR GB14-36681G; GA MŠMT(CZ) LO1212; GA MŠMT ED0017/01/01
Grant - others:AV ČR(CZ) CNR-16-12
Program: Bilaterální spolupráce
Institutional support: RVO:68081731
Keywords : optical trapping * optical binding * silicon nanowires * light-driven rotations * light angular momentum
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 11.238, year: 2019 ; AIS: 3.823, rok: 2019
Method of publishing: Limited access
Result website:
https://pubs.acs.org/doi/10.1021/acs.nanolett.8b03978DOI: https://doi.org/10.1021/acs.nanolett.8b03978

Silicon nanowires are held and manipulated in controlled optical traps based on counter-propagating beams focused by low numerical aperture lenses. The double-beam configuration compensates light scattering forces enabling an in-depth investigation of the rich dynamics of trapped nanowires that are prone to both optical and hydrodynamic interactions. Several polarization configurations are used, allowing the observation of optical binding with different stable structure as well as the transfer of spin and orbital momentum of light to the trapped silicon nanowires. Accurate modeling based on Brownian dynamics simulations with appropriate optical and hydrodynamic coupling confirms that this rich scenario is crucially dependent on the non-spherical shape of the nanowires. Such an increased level of optical control of multiparticle structure and dynamics open perspectives for nanofluidics and multi-component light-driven nanomachines.
Permanent Link: http://hdl.handle.net/11104/0299878