Fig. 1

(a) Depiction of the designed microcylinders. The cylinders protruded from a flat base plate. The dimensional parameter s defined the diameter, the height and the distance between the cylinders. s = 1, 3 and 9 μm; (b) Photograph and arrangement of the of the printed structures in an 8well µ-Slide for the further bacterial assay; (c) Scanning electron micrographs of the printed microcylinders from an 45° inclined view and from the top. All images were taken with a magnification of 8000. Scale bar = 10 μm