To determine the minimum feature size and resolu on of the developed materials, line pa erns with different spacing (ls) were printed with a laser power of 25 -30 mW and a scanning speed of 200 -250 µm s -1 (Figure ). O. aurita-based inks allow for a linewidth (lw) of approximately 750 -770 nm, whereas T. striata-based inks permit thinner linewidths of 540 -550 nm. It has been observed that the number of polymerizable groups per molecule affects the minimal feature size in a way that more polymerizable groups lead to a greater crosslinking density of the printed structures, hence allowing for thinner lines. T. strtata-based inks have in average more acrylate groups per triglyceride (2.82) than the one from O. aurita (2.28), which would support this observa on. The resolu on, i.e. the minimum distance between two lines that are s ll clearly separated, is similar for both microalgae-based inks, with 280 nm in the case of O. aurita and 330 nm for T. striata. Thus, submicron resolu on using microalgae-based inks is demonstrated.