English: Biohybrid Chlamydomonas reinhardtii microswimmers

A) Schematics of production steps for biohybrid C. reinhardtii.
B) SEM images of bare microalgae (left) and biohybrid microalgae (right) coated with chitosan-coated iron oxide nanoparticles (CSIONPs). Images were pseudocolored. A darker green color on the right SEM image represents chitosan coating on microalgae cell wall. Orange-colored particles represents CSIONPs.

C) Microscopy images of biohybrid microalgae treated with three different solutions: 1) microalgae coated with 5 µg mL^{−1< /sup> green-fluorescent chitosan polyelectrolyte solution (first row), 2) microalgae coated with 10 µg mL−1< /sup> red fluorescent CSIONPs (second row), and 3) microalgae coated with both CSIONPs (10 µg mL−1< /sup>) dispersed in chitosan polyelectrolyte solution (5 µg mL−1< /sup>) (third row}