Abstract

We demonstrate optical trapping of gold particles by use of single-beam gradient force. It is found that the radiation force exerted upon a gold particle can point toward the focus of the incident beam in two dimensions. Computations of the radiation force exerted upon a gold particle are also carried out to examine this phenomenon.

© 1998 Optical Society of America

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References

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  1. K. Sasaki, M. Koshioka, H. Misawa, N. Kitamura, and H. Mashuhara, Appl. Phys. Lett. 60, 807 (1992).
    [CrossRef]
  2. G. Roosen and C. Imbert, Opt. Commun. 26, 432 (1978).
    [CrossRef]
  3. S. Sato, Y. Harada, and Y. Waseda, Opt. Lett. 19, 1807 (1994).
    [CrossRef]
  4. H. C. van de Hulst, Light Scattering by Small Particles (Dover, New York, 1981), Sec.??17.32.
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    [CrossRef]
  6. W. H. Wright, G. J. Sonek, and M. W. Berns, Appl. Phys. Lett. 63, 715 (1993).
    [CrossRef]
  7. J. P. Barton, D. R. Alexander, and S. A. Schaub, J. Appl. Phys. 66, 4594 (1989).
    [CrossRef]
  8. E. D. Palik, Handbook of Optical Constants of Solids (Academic, New York, 1985).
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    [CrossRef] [PubMed]
  10. S. Kawata and T. Tani, Opt. Lett. 21, 1768 (1996).
    [CrossRef] [PubMed]

1996 (1)

1994 (2)

1993 (1)

W. H. Wright, G. J. Sonek, and M. W. Berns, Appl. Phys. Lett. 63, 715 (1993).
[CrossRef]

1992 (1)

K. Sasaki, M. Koshioka, H. Misawa, N. Kitamura, and H. Mashuhara, Appl. Phys. Lett. 60, 807 (1992).
[CrossRef]

1989 (1)

J. P. Barton, D. R. Alexander, and S. A. Schaub, J. Appl. Phys. 66, 4594 (1989).
[CrossRef]

1978 (1)

G. Roosen and C. Imbert, Opt. Commun. 26, 432 (1978).
[CrossRef]

1954 (1)

K. Deppermann and W. Franz, Ann. Phys. (Leipzig) 14, 253 (1954).
[CrossRef]

Alexander, D. R.

J. P. Barton, D. R. Alexander, and S. A. Schaub, J. Appl. Phys. 66, 4594 (1989).
[CrossRef]

Barton, J. P.

J. P. Barton, D. R. Alexander, and S. A. Schaub, J. Appl. Phys. 66, 4594 (1989).
[CrossRef]

Berns, M. W.

W. H. Wright, G. J. Sonek, and M. W. Berns, Appl. Phys. Lett. 63, 715 (1993).
[CrossRef]

Block, S. M.

Deppermann, K.

K. Deppermann and W. Franz, Ann. Phys. (Leipzig) 14, 253 (1954).
[CrossRef]

Franz, W.

K. Deppermann and W. Franz, Ann. Phys. (Leipzig) 14, 253 (1954).
[CrossRef]

Harada, Y.

Imbert, C.

G. Roosen and C. Imbert, Opt. Commun. 26, 432 (1978).
[CrossRef]

Kawata, S.

Kitamura, N.

K. Sasaki, M. Koshioka, H. Misawa, N. Kitamura, and H. Mashuhara, Appl. Phys. Lett. 60, 807 (1992).
[CrossRef]

Koshioka, M.

K. Sasaki, M. Koshioka, H. Misawa, N. Kitamura, and H. Mashuhara, Appl. Phys. Lett. 60, 807 (1992).
[CrossRef]

Mashuhara, H.

K. Sasaki, M. Koshioka, H. Misawa, N. Kitamura, and H. Mashuhara, Appl. Phys. Lett. 60, 807 (1992).
[CrossRef]

Misawa, H.

K. Sasaki, M. Koshioka, H. Misawa, N. Kitamura, and H. Mashuhara, Appl. Phys. Lett. 60, 807 (1992).
[CrossRef]

Palik, E. D.

E. D. Palik, Handbook of Optical Constants of Solids (Academic, New York, 1985).

Roosen, G.

G. Roosen and C. Imbert, Opt. Commun. 26, 432 (1978).
[CrossRef]

Sasaki, K.

K. Sasaki, M. Koshioka, H. Misawa, N. Kitamura, and H. Mashuhara, Appl. Phys. Lett. 60, 807 (1992).
[CrossRef]

Sato, S.

Schaub, S. A.

J. P. Barton, D. R. Alexander, and S. A. Schaub, J. Appl. Phys. 66, 4594 (1989).
[CrossRef]

Sonek, G. J.

W. H. Wright, G. J. Sonek, and M. W. Berns, Appl. Phys. Lett. 63, 715 (1993).
[CrossRef]

Svoboda, K.

Tani, T.

van de Hulst, H. C.

H. C. van de Hulst, Light Scattering by Small Particles (Dover, New York, 1981), Sec.??17.32.

Waseda, Y.

Wright, W. H.

W. H. Wright, G. J. Sonek, and M. W. Berns, Appl. Phys. Lett. 63, 715 (1993).
[CrossRef]

Ann. Phys. (Leipzig) (1)

K. Deppermann and W. Franz, Ann. Phys. (Leipzig) 14, 253 (1954).
[CrossRef]

Appl. Phys. Lett. (2)

W. H. Wright, G. J. Sonek, and M. W. Berns, Appl. Phys. Lett. 63, 715 (1993).
[CrossRef]

K. Sasaki, M. Koshioka, H. Misawa, N. Kitamura, and H. Mashuhara, Appl. Phys. Lett. 60, 807 (1992).
[CrossRef]

J. Appl. Phys. (1)

J. P. Barton, D. R. Alexander, and S. A. Schaub, J. Appl. Phys. 66, 4594 (1989).
[CrossRef]

Opt. Commun. (1)

G. Roosen and C. Imbert, Opt. Commun. 26, 432 (1978).
[CrossRef]

Opt. Lett. (3)

Other (2)

E. D. Palik, Handbook of Optical Constants of Solids (Academic, New York, 1985).

H. C. van de Hulst, Light Scattering by Small Particles (Dover, New York, 1981), Sec.??17.32.

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Figures (7)

Fig. 1
Fig. 1

(a) Repulsive force arising from surface reflection, (b) attractive force of a creeping wave, and (c) attractive force arising from refraction from a dielectric particle.

Fig. 2
Fig. 2

Experimental setup for trapping metallic particles.

Fig. 3
Fig. 3

Microscopic images of a trapped gold particle (a) before and (b) after movement of the sample cell.

Fig. 4
Fig. 4

Geometry for calculating the potential of a gold particle.

Fig. 5
Fig. 5

(a) Potential distribution calculated from the radiation force and scattering intensity distribution when (b) d=2λ and (c) d=0.3λ.

Fig. 6
Fig. 6

Microscopic images of aggregated gold particles when the focal plane is (a) below the particles and (b) several micrometers above them.

Fig. 7
Fig. 7

Calculations of radiation force in xy cross sections illuminated by a Gaussian beam. A gold particle is located (a), (b) above and (c) below the center focus. The incident beam propagates along the +z axis and is focused on the origin. The diameter of the beam waist is 1.03 µm 2λ. The dashed ellipse in (b) indicates the potential valley where gold particles gather.

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