"Instead of making a material for energy, we cultivate it" explained Mariano Campoy-Quiles, a researcher of this study.
"Bacteria, dispersed in an aqueous culture medium containing sugar and carbon nanotubes, produce the nanocellulose fibers that end up forming the device, in which the carbon nanotubes are embedded."
interesting ... similar resembling to that idea on this post?
https://steemit.com/solar/@eliowilson/solar-crystal-panel-bacteria
other https://www.zmescience.com/ecology/bacteria-photosynthesis-09432/