Method and apparatus for particle manipulation, and measuring ap

Details Method and apparatus for particle manipulation, and measuring ap Method and apparatus for particle manipulation, and measuring ap

1995-01-19

1996-02-27

Limanek, Robert P.

Radiant energy

Electrically neutral molecular or atomic beam devices and...

356 39, 356335, 356343, 356338, 2502222, G01B 1300, G01N 1100

Patent

active

054951054

ABSTRACT:
A flow of liquid containing floating fine particles is formed in a flow path, thereby causing successive movement of the particles. A light beam having intensity distribution from a laser is focused on the liquid flow, whereby the particle is optically trapped at the irradiating position, thus being stopped against the liquid flow or being slowed by a braking force. This phenomenon is utilized in controlling the spacing of the particles in the flow or in separating the particles.

REFERENCES:
patent: 3710279 (1973-01-01), Ashkin
patent: 3808550 (1974-04-01), Ashkin
patent: 4723129 (1988-02-01), Endo et al.
patent: 4740796 (1988-04-01), Endo et al.
patent: 4887721 (1989-12-01), Martin et al.
patent: 5198369 (1993-03-01), Itoh et al.
Laser-Scanning Micromanipulation and Spatial Patterning of Fine Particles by Keiji Sasaki, Masanori Koshioka, Hiroaki Misawa, Noboru Kitamura and Hiroshi Masuhara, Japanese Journal of Applied Physics, vol. 30, No. 5B, May 1991, pp. L907-L909.
Optical Trapping of a metal particle and a water droplet by a scanning laser beam, by Keiji Sasaki, Masanori Koshioka, Hiroaki Misawa, and Noboru Kitamusa, Appl. Phys. Lett. 60 (7), Feb. 17, 1992, American Institute Physics.

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