DEVICE AND PROCESS FOR HANDLING, TREATING AND OBSERVING SMALL PARTICLES, ESPECIALLY BIOLOGICAL PARTICLES

摘要

PCT No. PCT/EP94/00090 Sec. 371 Date Aug. 30, 1994 Sec. 102(e) Date Aug. 30, 1994 PCT Filed Jan. 13, 1994 PCT Pub. No. WO94/16543 PCT Pub. Date Jul. 21, 1994Apparatus for the manipulation, processing and observation of small particles, in particular biological particles, is disclosed. A first laser (4) generates light beams in a first wavelength range, which are focused with a first optical device (12, 13; 14, 15) and form an optical trap. A object holder (22) serves to contain the relevant particles. In addition a light source (17) for observation light is provided, whereas observation and recording devices serve to observe particles and record their behavior. A second laser (3) generates light beams in a second wavelength range, which are focused in order to manipulate particles in the object holder. The optical devices for the individual light beams can be positioned and focused independently of one another, and at the beginning of manipulation and observation the beams are focused in the same object plane of the object holder independently of their wavelengths.