Abstract

This article describes a setup suitable for the in situ visualization and imaging of swimming unicellular organisms in intense magnetic fields at a constant temperature. It fits within a 31 T maximum field, 50 mm bore resistive magnet at the National High Magnetic Field Laboratory. The main optical component is a 6 mm side view borescope, which provides an optical axis perpendicular to the magnetic field allowing us to monitor the motion of the micro-organisms parallel to the field. The system has a maximum resolution of 20μm. We will present images of swimming paramecia in magnetic field obtained with this setup and show that the resolution is adequate for tracking purposes.

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