Fig. 3

A custom print path generation algorithm was developed by Jung et al. [24]. It was demonstrated for a) an ear geometry and b) a simplified multi-material construct, in which four different materials were printed on each individual layer. Colours of the filaments indicate polymer scaffold (white), two different cell-laden hydrogels (blue and red), and the polymer support material (yellow), which supports overhangs on subsequent layers. An illustrative 3D model for a cone is shown on the very right of the figure to illustrate the scales being considered in different sets of images. Figure adapted under the Creative Commons CC-BY licence from the original article of Jung et al. [24]