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Dresden 2020 – wissenschaftliches Programm

Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...

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BP: Fachverband Biologische Physik

BP 5: Bioimaging and Biospectroscopy I

BP 5.7: Vortrag

Montag, 16. März 2020, 17:00–17:15, HÜL 386

Particle tracking via an electrically focus tunable lens (ETL) — •Oliver Köhn and Christian Wagner — Universität des Saarlandes

We describe a method for the 3D tracking of particles using an electrically focus tunable lens (ETL). Applying a current to the ETL adapts the focal plane of the lens, allowing us to track particles in three dimensions without any mechanical interactions with the sample. Based on the sharpness of the tracked particles we are able to recalculate the current z-position of the particle. This calculation can be performed during the tracking-process, enabling us to perform live-tracking of particles. We show how this tracking-method can be applied to track 1.) bacteria (Bacillus subtilis) and 2.) um-sized beads, both for several minutes.

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