Fermentation based carbon nanotube bionic functional composites
  The exploitation of the processes used by microorganisms to digest nutrients for their growth can be a viable method for the formation of a wide range of so called biogenic materials that have unique mechanical and physical properties that are not produced by abiotic processes. Based on grape must and bread fermentation, a bionic composite made of carbon nanotubes (CNTs) and single-cell fungi, the Saccharomyces cerevisiae yeast extract, was prepared by fermentation of such microorganisms at room temperature. 
Luca Valentini, Silvia Bittolo Bon, Stefano Signetti, Manoj Tripathi,   Erica Iacob, Nicola M. Pugno
cond-mat.mtrl-sci