title: Rotational dynamics of optically trapped nanofibers.
abstract: 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.
authors.affiliation: National Nanotechnology Laboratory of CNR-INFM, IIT Research Unit, Università del Salento, via Arnesano, Lecce, Italy. antonio.neves@unisalento.it
authors.forename: Antonio Alvaro Ranha
authors.initials: AA
authors.lastname: Neves
authors.forename: Andrea
authors.initials: A
authors.lastname: Camposeo
authors.forename: Stefano
authors.initials: S
authors.lastname: Pagliara
authors.forename: Rosalba
authors.initials: R
authors.lastname: Saija
authors.forename: Ferdinando
authors.initials: F
authors.lastname: Borghese
authors.forename: Paolo
authors.initials: P
authors.lastname: Denti
authors.forename: Maria Antonia
authors.initials: MA
authors.lastname: Iatì
authors.forename: Roberto
authors.initials: R
authors.lastname: Cingolani
authors.forename: Onofrio M
authors.initials: OM
authors.lastname: Maragò
authors.forename: Dario
authors.initials: D
authors.lastname: Pisignano
mesh_terms: D003198:Computer Simulation; D008027:Light; D008956:Models, Chemical; D043942:Nanotubes / Q000737:chemistry* / Q000528:radiation effects* / Q000648:ultrastructure; D052898:Optical Tweezers; D012399:Rotation; D019415:Torque