Leaftronics: novel devices
based on leaf skeletons

There is an urgent need to realize sustainable electronic systems. Here, we propose
lignocellulose leaf skeleton structures extracted from tree leaves as a novel approach. Leaf
skeletons ca be incorporated in flexible biosourced substrates with an environmental impact
much lower than conventional materials. Furthermore, leaf skeletons serve well for the
creation of semitransparent, metallized electrodes. We have shown that that it is possible to

independently tune the optical transmittance and the sheet resistance of the electrodes. Low-
cost fabrication and ease of processing makes these ubiquitously available biomaterials

interesting for many other applications.