Rotational dynamics of optically trapped nanofibers.
We report on the experimental evidence of tilted polymer nanofiber rotation, using a highly focused linear polarized Gaussian beam. Torque is controlled by varying trapping power or fiber tilt angle. This suggests an alternative strategy to previously reported approaches for the rotation of nano-objects, to test fundamental theoretical aspects. We compare experimental rotation frequencies to calculations based on T-Matrix formalism, which accurately reproduces measured data, thus providing a comprehensive description of trapping and rotation dynamics of the linear nanostructures.
Neves
Antonio Alvaro Ranha
AA
National Nanotechnology Laboratory of CNR-INFM, IIT Research Unit, Università del Salento, via Arnesano, Lecce, Italy. antonio.neves@unisalento.it
Camposeo
Andrea
A
Pagliara
Stefano
S
Saija
Rosalba
R
Borghese
Ferdinando
F
Denti
Paolo
P
Iatì
Maria Antonia
MA
Cingolani
Roberto
R
Maragò
Onofrio M
OM
Pisignano
Dario
D
D003198:Computer Simulation; D008027:Light; D008956:Models, Chemical; D043942:Nanotubes / Q000737:chemistry* / Q000528:radiation effects* / Q000648:ultrastructure; D052898:Optical Tweezers; D012399:Rotation; D019415:Torque