Abstract

We report on a novel principle of actuation of micrometer-sized liquid crystal droplets. It is based on a light-induced reordering of liquid crystal molecules inside the droplets. Polariscope imaging allowed to evaluate the birefringence change inside the micro-droplets. Directional actuation of the trapped droplet was achieved by cycling laser power with the direction defined by the polarization of the tweezing beam. Micro-actuation resulted from optically-induced birefringence; i.e., a nonlinear optical effect was utilized for mechanical manipulation of the micro-droplet. This principle of actuation can be used to induce molecular flows in sub-micrometer volumes.

© 2006 Optical Society of America

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  1. [REMOVED REF FIELD]. A. Ashkin, "Optical trapping and manipulation of neutral particles using lasers," Proc. Natl. Acad. Sci. USA 94, 4853 - 4860 (1997).
    [CrossRef]
  2. D. G. Grier, "A revolution in optical manipulation," Nature 424, 810-816 (2003).
    [CrossRef]
  3. M. E. J. Friese, T. A. Nieminen, N. R. Heckenberg, and H. Rubinsztein-Dunlop, "Optical alignment and spinning of laser-trapped microscopic particles," Nature 394, 348 - 350 (1998).
    [CrossRef]
  4. S. Juodkazis, S. Matsuo, N. Murazawa, I. Hasegawa, and H. Misawa, "High-efficiency optical transfer of torque to a nematic liquid crystal," Appl. Phys. Lett. 82, 4657-4659 (2003).
    [CrossRef]
  5. S. Juodkazis, M. Shikata, T. Takahashi, S. Matsuo, and H. Misawa, "Fast optical swithing by a laser manipulated microdroplet of liquid crystal," Appl. Phys. Lett. 74, 3627-3629 (1999).
    [CrossRef]
  6. H. Misawa and S. Juodkazis, "Photophysics and photochemistry of a laser manipulated microparticle," Prog. Polym. Sci. 24, 665-697 (1999).
    [CrossRef]
  7. H. Aben, Photoelasticity of Glass, (Springer-Verlag, 1993).
  8. S. Juodkazis and H. Misawa, "Controlled through-hole ablation of polymer microspheres," J. Micromech. Microeng. 14, 1244-1248 (2004).
    [CrossRef]
  9. I.-C. Khoo and S.-T. Wu, Optics and Nonlinear Optics of Liquid Crystals, Vol. I (World Scientific, 1993).
  10. N. V. Tabiryan, A. V. Sukhov, and B. Y. Zel’dovich, "The orientational optical nonlinearity of liquid crystals," Mol. Cryst. Liq. Cryst. 136, 1- 9 (1986).

2004

S. Juodkazis and H. Misawa, "Controlled through-hole ablation of polymer microspheres," J. Micromech. Microeng. 14, 1244-1248 (2004).
[CrossRef]

2003

D. G. Grier, "A revolution in optical manipulation," Nature 424, 810-816 (2003).
[CrossRef]

S. Juodkazis, S. Matsuo, N. Murazawa, I. Hasegawa, and H. Misawa, "High-efficiency optical transfer of torque to a nematic liquid crystal," Appl. Phys. Lett. 82, 4657-4659 (2003).
[CrossRef]

1999

S. Juodkazis, M. Shikata, T. Takahashi, S. Matsuo, and H. Misawa, "Fast optical swithing by a laser manipulated microdroplet of liquid crystal," Appl. Phys. Lett. 74, 3627-3629 (1999).
[CrossRef]

H. Misawa and S. Juodkazis, "Photophysics and photochemistry of a laser manipulated microparticle," Prog. Polym. Sci. 24, 665-697 (1999).
[CrossRef]

1998

M. E. J. Friese, T. A. Nieminen, N. R. Heckenberg, and H. Rubinsztein-Dunlop, "Optical alignment and spinning of laser-trapped microscopic particles," Nature 394, 348 - 350 (1998).
[CrossRef]

1997

[REMOVED REF FIELD]. A. Ashkin, "Optical trapping and manipulation of neutral particles using lasers," Proc. Natl. Acad. Sci. USA 94, 4853 - 4860 (1997).
[CrossRef]

1986

N. V. Tabiryan, A. V. Sukhov, and B. Y. Zel’dovich, "The orientational optical nonlinearity of liquid crystals," Mol. Cryst. Liq. Cryst. 136, 1- 9 (1986).

Ashkin, A.

[REMOVED REF FIELD]. A. Ashkin, "Optical trapping and manipulation of neutral particles using lasers," Proc. Natl. Acad. Sci. USA 94, 4853 - 4860 (1997).
[CrossRef]

Friese, M. E. J.

M. E. J. Friese, T. A. Nieminen, N. R. Heckenberg, and H. Rubinsztein-Dunlop, "Optical alignment and spinning of laser-trapped microscopic particles," Nature 394, 348 - 350 (1998).
[CrossRef]

Grier, D. G.

D. G. Grier, "A revolution in optical manipulation," Nature 424, 810-816 (2003).
[CrossRef]

Hasegawa, I.

S. Juodkazis, S. Matsuo, N. Murazawa, I. Hasegawa, and H. Misawa, "High-efficiency optical transfer of torque to a nematic liquid crystal," Appl. Phys. Lett. 82, 4657-4659 (2003).
[CrossRef]

Heckenberg, N. R.

M. E. J. Friese, T. A. Nieminen, N. R. Heckenberg, and H. Rubinsztein-Dunlop, "Optical alignment and spinning of laser-trapped microscopic particles," Nature 394, 348 - 350 (1998).
[CrossRef]

Juodkazis, S.

S. Juodkazis and H. Misawa, "Controlled through-hole ablation of polymer microspheres," J. Micromech. Microeng. 14, 1244-1248 (2004).
[CrossRef]

S. Juodkazis, S. Matsuo, N. Murazawa, I. Hasegawa, and H. Misawa, "High-efficiency optical transfer of torque to a nematic liquid crystal," Appl. Phys. Lett. 82, 4657-4659 (2003).
[CrossRef]

H. Misawa and S. Juodkazis, "Photophysics and photochemistry of a laser manipulated microparticle," Prog. Polym. Sci. 24, 665-697 (1999).
[CrossRef]

S. Juodkazis, M. Shikata, T. Takahashi, S. Matsuo, and H. Misawa, "Fast optical swithing by a laser manipulated microdroplet of liquid crystal," Appl. Phys. Lett. 74, 3627-3629 (1999).
[CrossRef]

Matsuo, S.

S. Juodkazis, S. Matsuo, N. Murazawa, I. Hasegawa, and H. Misawa, "High-efficiency optical transfer of torque to a nematic liquid crystal," Appl. Phys. Lett. 82, 4657-4659 (2003).
[CrossRef]

S. Juodkazis, M. Shikata, T. Takahashi, S. Matsuo, and H. Misawa, "Fast optical swithing by a laser manipulated microdroplet of liquid crystal," Appl. Phys. Lett. 74, 3627-3629 (1999).
[CrossRef]

Misawa, H.

S. Juodkazis and H. Misawa, "Controlled through-hole ablation of polymer microspheres," J. Micromech. Microeng. 14, 1244-1248 (2004).
[CrossRef]

S. Juodkazis, S. Matsuo, N. Murazawa, I. Hasegawa, and H. Misawa, "High-efficiency optical transfer of torque to a nematic liquid crystal," Appl. Phys. Lett. 82, 4657-4659 (2003).
[CrossRef]

H. Misawa and S. Juodkazis, "Photophysics and photochemistry of a laser manipulated microparticle," Prog. Polym. Sci. 24, 665-697 (1999).
[CrossRef]

S. Juodkazis, M. Shikata, T. Takahashi, S. Matsuo, and H. Misawa, "Fast optical swithing by a laser manipulated microdroplet of liquid crystal," Appl. Phys. Lett. 74, 3627-3629 (1999).
[CrossRef]

Murazawa, N.

S. Juodkazis, S. Matsuo, N. Murazawa, I. Hasegawa, and H. Misawa, "High-efficiency optical transfer of torque to a nematic liquid crystal," Appl. Phys. Lett. 82, 4657-4659 (2003).
[CrossRef]

Nieminen, T. A.

M. E. J. Friese, T. A. Nieminen, N. R. Heckenberg, and H. Rubinsztein-Dunlop, "Optical alignment and spinning of laser-trapped microscopic particles," Nature 394, 348 - 350 (1998).
[CrossRef]

Rubinsztein-Dunlop, H.

M. E. J. Friese, T. A. Nieminen, N. R. Heckenberg, and H. Rubinsztein-Dunlop, "Optical alignment and spinning of laser-trapped microscopic particles," Nature 394, 348 - 350 (1998).
[CrossRef]

Shikata, M.

S. Juodkazis, M. Shikata, T. Takahashi, S. Matsuo, and H. Misawa, "Fast optical swithing by a laser manipulated microdroplet of liquid crystal," Appl. Phys. Lett. 74, 3627-3629 (1999).
[CrossRef]

Sukhov, A. V.

N. V. Tabiryan, A. V. Sukhov, and B. Y. Zel’dovich, "The orientational optical nonlinearity of liquid crystals," Mol. Cryst. Liq. Cryst. 136, 1- 9 (1986).

Tabiryan, N. V.

N. V. Tabiryan, A. V. Sukhov, and B. Y. Zel’dovich, "The orientational optical nonlinearity of liquid crystals," Mol. Cryst. Liq. Cryst. 136, 1- 9 (1986).

Takahashi, T.

S. Juodkazis, M. Shikata, T. Takahashi, S. Matsuo, and H. Misawa, "Fast optical swithing by a laser manipulated microdroplet of liquid crystal," Appl. Phys. Lett. 74, 3627-3629 (1999).
[CrossRef]

Zel’dovich, B. Y.

N. V. Tabiryan, A. V. Sukhov, and B. Y. Zel’dovich, "The orientational optical nonlinearity of liquid crystals," Mol. Cryst. Liq. Cryst. 136, 1- 9 (1986).

Appl. Phys. Lett.

S. Juodkazis, S. Matsuo, N. Murazawa, I. Hasegawa, and H. Misawa, "High-efficiency optical transfer of torque to a nematic liquid crystal," Appl. Phys. Lett. 82, 4657-4659 (2003).
[CrossRef]

S. Juodkazis, M. Shikata, T. Takahashi, S. Matsuo, and H. Misawa, "Fast optical swithing by a laser manipulated microdroplet of liquid crystal," Appl. Phys. Lett. 74, 3627-3629 (1999).
[CrossRef]

J. Micromech. Microeng.

S. Juodkazis and H. Misawa, "Controlled through-hole ablation of polymer microspheres," J. Micromech. Microeng. 14, 1244-1248 (2004).
[CrossRef]

Mol. Cryst. Liq. Cryst.

N. V. Tabiryan, A. V. Sukhov, and B. Y. Zel’dovich, "The orientational optical nonlinearity of liquid crystals," Mol. Cryst. Liq. Cryst. 136, 1- 9 (1986).

Nature

D. G. Grier, "A revolution in optical manipulation," Nature 424, 810-816 (2003).
[CrossRef]

M. E. J. Friese, T. A. Nieminen, N. R. Heckenberg, and H. Rubinsztein-Dunlop, "Optical alignment and spinning of laser-trapped microscopic particles," Nature 394, 348 - 350 (1998).
[CrossRef]

Proc. Natl. Acad. Sci. USA

[REMOVED REF FIELD]. A. Ashkin, "Optical trapping and manipulation of neutral particles using lasers," Proc. Natl. Acad. Sci. USA 94, 4853 - 4860 (1997).
[CrossRef]

Prog. Polym. Sci.

H. Misawa and S. Juodkazis, "Photophysics and photochemistry of a laser manipulated microparticle," Prog. Polym. Sci. 24, 665-697 (1999).
[CrossRef]

Other

H. Aben, Photoelasticity of Glass, (Springer-Verlag, 1993).

I.-C. Khoo and S.-T. Wu, Optics and Nonlinear Optics of Liquid Crystals, Vol. I (World Scientific, 1993).

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