Exploring unconventional capabilities of holographic tweezers

R. J. Hernandez; P. Pagliusi; C. Provenzano; G. Cipparrone

doi:10.1117/12.886971

11 May 2011 Exploring unconventional capabilities of holographic tweezers

R. J. Hernandez, P. Pagliusi, C. Provenzano, G. Cipparrone

Proceedings Volume 8074, Holography: Advances and Modern Trends II; 80740L (2011) https://doi.org/10.1117/12.886971
Event: SPIE Optics + Optoelectronics, 2011, Prague, Czech Republic

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.

Citation Download Citation

R. J. Hernandez, P. Pagliusi, C. Provenzano, and G. Cipparrone "Exploring unconventional capabilities of holographic tweezers", Proc. SPIE 8074, Holography: Advances and Modern Trends II, 80740L (11 May 2011); https://doi.org/10.1117/12.886971

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