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The control of electromechanical responses within bonding regions isessential to face frontier challenges in nanotechnologies, such as molecularelectronics and biotechnology. Here, we present I\b{eta}-nanocellulose as apotentially new orthotropic 2D piezoelectric crystal. The predicted in-layerpiezoelectricity is originated on a sui-generis hydrogen bonds pattern. Uponthis fact and by using a combination of ab-initio and ad-hoc models, weintroduce a description of electrical profiles along chemical bonds. Suchdevelopments lead to obtain a rationale for modelling the extendedpiezoelectric effect originated within bond scales. The order of magnitudeestimated for the 2D I\b{eta}-nanocellulose piezoelectric response, ~pm V-1,ranks this material at the level of currently used piezoelectric energygenerators and new artificial 2D designs. Such finding would be crucial fordeveloping alternative materials to drive emerging nanotechnologies.

Orthotropic Piezoelectricity in 2D Nanocellulose