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We have shown that the crack-trapping mechanism couples multiplicatively to near crack-tip processes by studying the effect of rate. This means that the crack-trapping mechanism for adhesion and friction enhancement functions independently of the molecular processes at the crack tip but is coupled to them.

“Effect of rate on adhesion and static friction of a film-terminated fibrillar interface,” Shilpi Vajpayee, Rong Long, Lulin Shen, Anand Jagota, Chung-Yuen Hui, Langmuir, 25 (5) 2765-2771 (2009).