Biological Surface Colonisation as Thermal Optimisation Oracle: A Biomimetic Heuristic for Conformal Heat Exchanger Layout

Existing bioinspired heat exchanger research abstracts geometry from biological organisms — leaf vein branching ratios, lung network topology, shark skin texture — and applies it to engineered surfaces. This note proposes a fundamentally different approach: reading the colonisation pattern of organisms already present on a specific target surface as a pre-computed thermal optimisation output for that surface, then using that pattern directly as a layout template for conformal cooling or heating channels. The organism is not the inspiration; it is the sensor and the solver simultaneously (bio-deployed). This inversion — letting biology run the optimisation on the actual surface rather than abstracting geometry from a different organism in a different context — has not appeared in the heat exchanger literature. A related principle, discontinuous thermal contact optimisation, is identified as the physical mechanism underlying why biological colonisation patterns achieve effective thermal management without full surface coverage.