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. 2013 Oct 23;3:3027. doi: 10.1038/srep03027

Figure 1. Guiding formation of periodic cracks with saw-tooth structures.

Figure 1

(a,b) Optical images and schematics of multilayer structures fabricated with an array of V-notches, (a) before and (b) after cracks are generated by applied tension. Periodic cracks are produced along V-notches. (c,d) Crack spacing in a (c) Au/PDMS and (d) SiOx/PDMS bilayer system with different saw-tooth spacings as compared to a control measurement without saw-tooth structures at (c) ε ~ 10% and (d) ε ~ 6%. Scale bar: 200 μm.