“…As shown in the figure, the formation of a groove along with the expected 'side banks' resulting from mechanical damage is observed (image A2), from which IRIR images were collected, and the shape of the damaged area resulting from materials piling follows previous observations. 23 Upon UV exposure, a frontal flow which resembles frontal polymerization occurs from the bottom of the scratch (A2 1 , A2 2 ). The heights of the surface topological features plotted as a function of the displacement perpendicular to the damaged area are illustrated in Fig.…”