Abstract
This defensive publication discloses a self-powered device and method for in-situ monitoring of living trees. A porous anchor of a biocompatible titanium alloy with a gyroid (TPMS) architecture is implanted into the xylem, where the same gyroid admits sap, reduces the modulus mismatch with wood and forms the metal-xylem electrode of an enzymatic biofuel cell: a deglycosylated FAD-dependent glucose dehydrogenase anode with an osmium redox mediator, and a laccase/ZIF-nanozyme oxygen cathode at the bark-air boundary. The cell charges a supercapacitor that powers the electronics, and the time it needs to charge the store across a fixed voltage window is the physiological signal, so the power source is also the sensor. A Lorenz-type chaotic transform, computed on the node from a per-device secret seed and recomputed independently by a server, acts as an integrity seal: without the seed a frame cannot be forged consistently, with no secure element and no per-frame signature. Further disclosed features: a three-zone coaxial anchor with a PEEK thermal break, a monolithic titanium bus wire, annular ratchet barbs with a hot press-fit, an etched dual-scale pore-wall surface, a gene-level deglycosylated enzyme variant, a rule for several anchors (parallel within a trunk, series only between trunks), a blind-mate spring-pin interface with a quarter-turn bayonet, open-circuit voltage read through the harvester's MPPT window, a vented sensor pocket for a weather gate, band-set self-attestation of the seal, and an implantation method. It is published so that these features stay free from patent capture.
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Recommended Citation
Lukin, Oleksii, "Defensive Disclosure — SilkenNet Self-Powered Tree-Health Monitor (Prior Art)", Technical Disclosure Commons, ()
https://www.tdcommons.org/dpubs_series/12006