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Albert-Ludwigs-Universität Freiburg Friedrichstraße 39 79085 Freiburg, Germany http://www.uni-freiburg.de
Contact Mr Alexander Rohrbach +49 761 2037536
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Albert-Ludwigs-Universität Freiburg

Das Bakterium in der Laser-Falle

Freiburger Forscher entwickeln einen Lichtschlauch, der kleinste Einzeller greif- und sichtbar macht

(PresseBox) (Freiburg, )
Wissenschaftler vom Institut für Mikrosystemtechnik (IMTEK) der Universität Freiburg haben eine neuartige optische Falle konstruiert, die mittels eines Lasers sehr kleine, längliche Bakterien festhalten und abscannen kann. So haben die Physiker Prof. Dr. Alexander Rohrbach und Matthias Koch eine Art Lichtschlauch erzeugt, in dem die agilen Einzeller gefangen werden.

Bisher war es mit optischen Pinzetten nur möglich, Bakterien an einem Punkt ihres Körpers festzuhalten, ohne jedoch ihre Lage verändern zu können. Die Freiburger Forscher konnten nun durch den sich schnell bewegenden fokussierten Laser gleichmäßig verteilte Kräfte auf das Bakterium ausüben, welches seine komplexe Form fortlaufend ändert.

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