TAUB, Raphaelle; SALEZ, Thomas; ALARCON, Hector; RAPHAEL, Elie; POULARD, Christophe; RESTAGNO, Frédéric

doi:10.1140/epje/s10189-021-00068-z

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TAUB, Raphaelle
Laboratoire de Physique des Solides [LPS]

SALEZ, Thomas
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

ALARCON, Hector
Instituto de Ciencias de la Ingenieria [ICIn - UOH]

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European Physical Journal E: Soft matter and biological physics. 2021, vol. 44, p. 71

EDP Sciences: EPJ

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Two interleaved phonebooks are nearly impossible to separate by pulling their spines. The very slight force exerted by the outer sheets of the assembly is amplified as the exponential of the square of the number of sheets, leading to a highly-resistant system even with a small number of sheets. We present a systematic and detailed study of the influences of the normal external force and the geometrical parameters of the booklets on the assembly strength. We conclude that the paper-paper adhesion force between the two outer sheets, on the order of a few mN, is the one that is amplified by the two interleaved system. The two-phonebooks experiment that has attracted the attention of students and non-scientific public all around the world as an outstanding demonstration of the strength of friction appears to be as well a spectacular macroscopic manifestation of the microscopic friction-adhesion coupling.< Réduire

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Nonlinear amplification of adhesion forces in interleaved books

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