Abstract

Optical trapping of transparent ring-shaped micrometer-sized objects with a refractive index lower than that of the surrounding medium has been demonstrated by use of a strongly focused TEM00-mode laser beam. Axial trapping of these objects is a result of the upward radiation pressure induced when the incident light strikes the inner wall and transmitted light leaves from the bottom. Transverse trapping of these objects occurs because the total repulsive radiation pressure exerted on the inner wall of the object is directed toward the laser beam axis. Three-dimensional manipulation of fluorinated polyimide micro-objects (refractive index n1 = 1.525, outer diameter 10 μm, inner diameter 5 μm, and thickness 5.7 μm) in a high-refractive-index liquid (n2 = 1.605) was experimentally shown to be possible by use of an objective lens with a wide range of numerical apertures from 1.25 to 0.5.

© 1995 Optical Society of America

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1994 (2)

E. Higurashi, H. Ukita, H. Tanaka, O. Ohguchi, Appl. Phys. Lett. 64, 2209 (1994).
[CrossRef]

T. Matsuura, S. Ando, S. Sasaki, F. Yamamoto, Macromolecules 27, 6665 (1994).
[CrossRef]

1993 (2)

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

H. Ukita, Y. Uenishi, H. Tanaka, Science 260, 786 (1993).
[CrossRef] [PubMed]

1992 (1)

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

1991 (1)

H. Misawa, N. Kitamura, H. Masuhara, J. Am. Chem. Soc. 113, 7859 (1991).
[CrossRef]

1988 (1)

B. T. Unger, P. L. Marston, J. Acoust. Soc. Am. 83, 970 (1988).
[CrossRef]

1987 (1)

A. Ashkin, J. M. Dziedzic, T. Yamane, Nature (London) 330, 769 (1987).
[CrossRef] [PubMed]

1986 (1)

1980 (1)

1978 (1)

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

1970 (1)

A. Ashkin, Phys. Rev. Lett. 24, 156 (1970).
[CrossRef]

Ando, S.

T. Matsuura, S. Ando, S. Sasaki, F. Yamamoto, Macromolecules 27, 6665 (1994).
[CrossRef]

Ashkin, A.

Berns, M. W.

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

Bjorkholm, J. E.

Chu, S.

Dziedzic, J. M.

Higurashi, E.

E. Higurashi, H. Ukita, H. Tanaka, O. Ohguchi, Appl. Phys. Lett. 64, 2209 (1994).
[CrossRef]

E. Higurashi, H. Ukita, H. Tanaka, O. Ohguchi, in Proceedings of the IEEE Micro-Electro Mechanical Systems Workshop (Institute of Electrical and Electronics Engineers, New York, 1994), p. 291.

Imbert, C.

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

Kitamura, N.

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

H. Misawa, N. Kitamura, H. Masuhara, J. Am. Chem. Soc. 113, 7859 (1991).
[CrossRef]

Koshioka, M.

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

Marston, P. L.

B. T. Unger, P. L. Marston, J. Acoust. Soc. Am. 83, 970 (1988).
[CrossRef]

Masuhara, H.

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

H. Misawa, N. Kitamura, H. Masuhara, J. Am. Chem. Soc. 113, 7859 (1991).
[CrossRef]

Matsuura, T.

T. Matsuura, S. Ando, S. Sasaki, F. Yamamoto, Macromolecules 27, 6665 (1994).
[CrossRef]

Misawa, H.

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

H. Misawa, N. Kitamura, H. Masuhara, J. Am. Chem. Soc. 113, 7859 (1991).
[CrossRef]

Ohguchi, O.

E. Higurashi, H. Ukita, H. Tanaka, O. Ohguchi, Appl. Phys. Lett. 64, 2209 (1994).
[CrossRef]

E. Higurashi, H. Ukita, H. Tanaka, O. Ohguchi, in Proceedings of the IEEE Micro-Electro Mechanical Systems Workshop (Institute of Electrical and Electronics Engineers, New York, 1994), p. 291.

Roosen, G.

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

Sasaki, K.

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

Sasaki, S.

T. Matsuura, S. Ando, S. Sasaki, F. Yamamoto, Macromolecules 27, 6665 (1994).
[CrossRef]

Sonek, G. J.

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

Tanaka, H.

E. Higurashi, H. Ukita, H. Tanaka, O. Ohguchi, Appl. Phys. Lett. 64, 2209 (1994).
[CrossRef]

H. Ukita, Y. Uenishi, H. Tanaka, Science 260, 786 (1993).
[CrossRef] [PubMed]

E. Higurashi, H. Ukita, H. Tanaka, O. Ohguchi, in Proceedings of the IEEE Micro-Electro Mechanical Systems Workshop (Institute of Electrical and Electronics Engineers, New York, 1994), p. 291.

Uenishi, Y.

H. Ukita, Y. Uenishi, H. Tanaka, Science 260, 786 (1993).
[CrossRef] [PubMed]

Ukita, H.

E. Higurashi, H. Ukita, H. Tanaka, O. Ohguchi, Appl. Phys. Lett. 64, 2209 (1994).
[CrossRef]

H. Ukita, Y. Uenishi, H. Tanaka, Science 260, 786 (1993).
[CrossRef] [PubMed]

E. Higurashi, H. Ukita, H. Tanaka, O. Ohguchi, in Proceedings of the IEEE Micro-Electro Mechanical Systems Workshop (Institute of Electrical and Electronics Engineers, New York, 1994), p. 291.

Unger, B. T.

B. T. Unger, P. L. Marston, J. Acoust. Soc. Am. 83, 970 (1988).
[CrossRef]

Wright, W. H.

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

Yamamoto, F.

T. Matsuura, S. Ando, S. Sasaki, F. Yamamoto, Macromolecules 27, 6665 (1994).
[CrossRef]

Yamane, T.

A. Ashkin, J. M. Dziedzic, T. Yamane, Nature (London) 330, 769 (1987).
[CrossRef] [PubMed]

Appl. Opt. (1)

Appl. Phys. Lett. (3)

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

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

E. Higurashi, H. Ukita, H. Tanaka, O. Ohguchi, Appl. Phys. Lett. 64, 2209 (1994).
[CrossRef]

J. Acoust. Soc. Am. (1)

B. T. Unger, P. L. Marston, J. Acoust. Soc. Am. 83, 970 (1988).
[CrossRef]

J. Am. Chem. Soc. (1)

H. Misawa, N. Kitamura, H. Masuhara, J. Am. Chem. Soc. 113, 7859 (1991).
[CrossRef]

Macromolecules (1)

T. Matsuura, S. Ando, S. Sasaki, F. Yamamoto, Macromolecules 27, 6665 (1994).
[CrossRef]

Nature (1)

A. Ashkin, J. M. Dziedzic, T. Yamane, Nature (London) 330, 769 (1987).
[CrossRef] [PubMed]

Opt. Commun. (1)

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

Opt. Lett. (1)

Phys. Rev. Lett. (1)

A. Ashkin, Phys. Rev. Lett. 24, 156 (1970).
[CrossRef]

Science (1)

H. Ukita, Y. Uenishi, H. Tanaka, Science 260, 786 (1993).
[CrossRef] [PubMed]

Other (1)

E. Higurashi, H. Ukita, H. Tanaka, O. Ohguchi, in Proceedings of the IEEE Micro-Electro Mechanical Systems Workshop (Institute of Electrical and Electronics Engineers, New York, 1994), p. 291.

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Figures (3)

Fig. 1
Fig. 1

Scanning-electron-microscope photograph of a fabricated micro-object. The micro-object is 5.7 μm thick.

Fig. 2
Fig. 2

(a) Optical radiation pressure forces exerted on a spherical low-refractive-index micro-object in a focused laser beam (repulsive force). ( b), (c) Optical radiation pressure forces exerted on ring-shaped micro-objects in a focused laser beam (attractive forces). Mi is the total momentum of the incident laser light, and Mo is that of the scattered laser light. Md is the total momentum transferred to the object.

Fig. 3
Fig. 3

Optical trapping of a ring-shaped micro-object (n1 = 1.525) with a refractive index lower than that of the surrounding medium (n2 = 1.605), in which (a) the object was trapped on the bottom of a glass cell and (b) the trapped object was moved from the bottom of the cell. The microscope stage was then moved horizontally, but the trapped object remained in the beam.

Tables (1)

Tables Icon

Table 1 Measured Axial Trapping Efficiency Qmax

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