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Multiscale Consulting

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Articles

Impact of nanometer-thin stiff layer on adhesion to rough surfaces

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By B. N. J. Persson, Forschungszentrum Jülich, Shubhendu Kumar, Multiscale Consulting
| Physical Review B
Adhesives require molecular contact, which is governed by roughness, modulus, and load. Here, we measured adhesion for stiff glassy polymer layers of varying thickness on top of a soft elastomer with rough substrates. We found that a 90-nm-thick PMMA layer on a softer elastic block was sufficient to drop macroscopic adhesion to almost zero during the loading cycle.
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