This biopolymer is spun outside the cell wall of species such as Novacetimonas hansenii, forming ribbons only a few nanometers thick that lock together like Velcro and can reach tensile strength values above 400 MPa.

Because the fiber network is pure, porous, and matches human tissue chemistry, clinicians already test it as a transparent wound covering that eases pain and speeds healing.

Microbes build strong sheets
“We envision these strong, multifunctional and eco‑friendly bacterial cellulose sheets becoming ubiquitous, replacing plastics in various industries and helping mitigate environmental damage,” said Rahman.

Guided by a slow, continuous spin inside an oxygen‑permeable cylinder, the bacteria swim in one direction and lay each thread side‑by‑side, turning random mats into ordered cables that reach 436 MPa and a 32 GPa modulus.

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