Regensburg 2004 – wissenschaftliches Programm

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DY: Dynamik und Statistische Physik

DY 46: Poster

DY 46.52: Poster

Donnerstag, 11. März 2004, 16:00–18:00, Poster D

Construction of an optical line tweezer for colloidal particles — •Raquel Chulia Jordan, Hans Joachim Schöpe, and Thomas Palberg — Johannes Gutenberg-Universität Mainz, Institut für Physik, Staudingerweg 7, D-55099 Mainz

Line tweezers are a valuable tool for investigations of pair interactions in colloidal suspensions. We report on the construction of such a device implementing a beam positioning by an acousto-optic modulator, a set of counter-propagating beams with λ=532nm and an imaging optics with depolarized back scattered light. Construction principle, calibration and performance are discussed in detail.