# Long term observation of Magnetospirillum gryphiswaldense in a microfluidic channel

Tijmen A. G. Hageman, Marc P. Pichel, Per A. Löthman, Jiung Cho, Miri Choi, Nuriye Korkmaz, Andreas Manz, Leon Abelmann

Research output: Working paper

### Abstract

We controlled and observed individual magnetotactic bacteria (Magnetospirillum gryphiswaldense) inside a 5 {\mu}m high microfluidic channel for over four hours. After a period of constant velocity, the duration of which varied between bacteria, all observed bacteria showed a gradual decrease in their velocity of about 25 nm/s$^2$. After coming to a full stop, different behaviour was observed, ranging from rotation around the centre of mass synchronous with the direction of the external magnetic field, to being completely immobile. Our results suggest that the influence of the high intensity illumination and the presence of the channel walls are important parameters to consider when performing observations of such long duration.
Original language English 7 Published - 21 Feb 2019

### Publication series

Name Arxiv.org

### Keywords

• physics.bio-ph

• ## Cite this

Hageman, T. A. G., Pichel, M. P., Löthman, P. A., Cho, J., Choi, M., Korkmaz, N., ... Abelmann, L. (2019). Long term observation of Magnetospirillum gryphiswaldense in a microfluidic channel. (1902.08033v1 ed.) (Arxiv.org).