Open AccessOptical trapping and manipulation of live T cells with a low numerical aperture lens
Author(s) -
John Harris,
Gail McConnell
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.014036
Subject(s) - optical tweezers , optics , numerical aperture , lens (geology) , trapping , confocal , aperture (computer memory) , laser , materials science , magnification , physics , wavelength , ecology , acoustics , biology
An optical manipulation system that employs both optical and temperature gradients to simultaneously enable trapping, manipulating and imaging of live cells with a low magnification, low numerical aperture objective lens (10x/0.4 N.A.) is reported. This approach negates the requirement for a high N.A. lens used in traditional optical trapping. Our system comprised a dual scanning system and two independent lasers which provided the ability to move the trapping spot independently of the confocal imaging process in close to real-time and without pre-programming. To demonstrate the efficacy of this innovative method, trapping and manipulation of live T cells was simultaneously performed over a field of view exceeding 1 mm(2) for extended periods without compromising cell viability.