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Proceedings Paper

Exploring unconventional capabilities of holographic tweezers
Author(s): R. J. Hernandez; P. Pagliusi; C. Provenzano; G. Cipparrone
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Paper Abstract

We report an investigation of manipulation and trapping capabilities of polarization holographic tweezers. A polarization gradient connected with a modulation of the ellipticity shows an optical force related to the polarization of the light that can influence optically isotropic particles. While in the case of birefringent particles an unconventional trapping in circularly polarized fringes is observed. A liquid crystal emulsion has been adopted to investigate the capabilities of the holographic tweezers. The unusual trapping observed for rotating bipolar nematic droplets has suggested the involvement of the lift hydrodynamic force responsible of the Magnus effect, originating from the peculiar optical force field. We show that the Magnus force which is ignored in the common approach can contribute to unconventional optohydrodynamic trapping and manipulation.

Paper Details

Date Published: 11 May 2011
PDF: 8 pages
Proc. SPIE 8074, Holography: Advances and Modern Trends II, 80740L (11 May 2011); doi: 10.1117/12.886971
Show Author Affiliations
R. J. Hernandez, Univ. della Calabria (Italy)
P. Pagliusi, Univ. della Calabria (Italy)
CNR-IPCF, UOS Cosenza (Italy)
C. Provenzano, Univ. della Calabria (Italy)
G. Cipparrone, Univ. della Calabria (Italy)
CNR-IPCF, UOS Cosenza (Italy)

Published in SPIE Proceedings Vol. 8074:
Holography: Advances and Modern Trends II
Miroslav Hrabovský; Miroslav Miler; John T. Sheridan, Editor(s)

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