Open AccessOptical trapping, manipulation, and sorting of cells and colloids in microfluidic systems with diode laser bars
Author(s) -
Robert W. Applegate,
Jeff Squier,
Tor Vestad,
John Oakey,
David W. M. Marr
Publication year - 2004
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.004390
Subject(s) - optical tweezers , optics , materials science , microfluidics , trapping , holography , laser , diode , bar (unit) , sorting , micrometer , laser diode , optoelectronics , laser beams , nanotechnology , physics , computer science , ecology , meteorology , biology , programming language
We demonstrate a new technique for trapping, sorting, and manipulating cells and micrometer-sized particles within microfluidic systems, using a diode laser bar. This approach overcomes the scaling limitations of conventional scanned laser traps, while avoiding the computational and optical complexity inherent to holographic optical trapping schemes. The diode laser bar enables us to control a large trapping zone, 1 microm by 100 microm, without the necessity of scanning or altering the phase of the beam.