Biodegradable Stent Strut Cross-Section (2D)

This is the 2D counterpart to the 3D bioresorbable-stent lattice simulator. Rather than animating a whole strut lattice, it zooms into a single strut's circular cross-section and simulates it as a 2D reaction-diffusion grid: each cell independently integrates the autocatalytic Pitt–Schindler chain-scission equation, coupled to its neighbors through a diffusing field of acidic hydrolysis by-products that can only escape at the strut's outer rim. That coupling is what makes this a genuinely distinct, 2D-native mechanism rather than a flattened view of the same 3D animation — it reproduces the well-known "hollowing" pattern of bulk-eroding bioresorbable polymers, where the interior of a strut degrades measurably faster than its surface because trapped acid accelerates hydrolysis in the core. Scrub the timeline or press play to watch 36 months of degradation, and tune glycolide content, autocatalysis strength and the new acid-diffusion rate to see how each reshapes the erosion front.