Plowing-induced structuring of compliant surfaces

Mazo, Juan J. (Universidad de Zaragoza) ; Martínez, Pedro J. (Universidad de Zaragoza) ; Pedraz, Patricia ; Hennig, Jana ; Gnecco, Enrico

Resumen: The structures produced by a sharp tip scraping a compliant surface are modeled in the illustrative case of scan patterns formed by a series of parallel lines. This is made possible by a modified version of the Prandtl model for stick-slip friction, with an interaction energy landscape replicating the morphology of the evolving surface. As a result, a ripple motif emerges with a tilt angle increasing linearly with the distance between the scan lines, except for the region close to the left boundary of the scanned area, where the ripples are oriented at 90°. This region can penetrate considerably to the right, forming a complex branched pattern. These predictions are substantiated by atomic force microscopy nanolithography experiments on polystyrene surfaces at room temperature. A simple and robust theoretical protocol for reproducing early-stage wear processes (potentially going beyond single contacts) is thus made available.

Idioma: Inglés

DOI: 10.1103/PhysRevLett.122.256101

Año: 2019

Publicado en: Physical Review Letters 122, 25 (2019), 256101 [5 pp.]
ISSN: 0031-9007

Factor impacto JCR: 8.385 (2019)

Categ. JCR: PHYSICS, MULTIDISCIPLINARY rank: 6 / 85 = 0.071 (2019) - Q1 - T1

Factor impacto SCIMAGO: 3.588 - Physics and Astronomy (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E36-17R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2014-55867-P
Financiación: info:eu-repo/grantAgreement/ES/MINECO/FIS2017-87519-P

Tipo y forma: Article (Published version)

Área (Departamento): Área Física Aplicada (Dpto. Física Aplicada)
Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)