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-obj...

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Bibliographic Details
Published inOptics express Vol. 18; no. 2; pp. 822 - 830
Main Authors Neves, Antonio Alvaro Ranha, Camposeo, Andrea, Pagliara, Stefano, Saija, Rosalba, Borghese, Ferdinando, Denti, Paolo, Iatì, Maria Antonia, Cingolani, Roberto, Maragò, Onofrio M, Pisignano, Dario
Format Journal Article
LanguageEnglish
Published United States 18.01.2010
Subjects
Computer Simulation
Light
Models, Chemical
Nanotubes - chemistry
Nanotubes - radiation effects
Nanotubes - ultrastructure
Optical Tweezers
Rotation
Torque
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Summary: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.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.18.000822