that the silver strips that usually run through solar panels are no longer needed, freeing up new design ideas. we can print this in the shape of. exactly. these cells have been shaped to fit a headphone band and this robot is responsible for squirting electrolytes on them to allow conduction. it looks like it's going to drip bits in between. but it's actually doing very precisely? it's more efficient and predictable and for sure doesn't make any mistakes. the final step is lamination to give the cells custom textures. and into the press it goes. and here's the finished product. a1 .3 millimetre thick solar cell. giovanni, tell me about the prototypes you've got here?