Influence of spring stiffness and anisotropy on stick-slip atomic force microscopy imaging

Abstract

Influence of spring stiffness and anisotropy on stick-slip atomic force microscopy imaging Kerssemakers, J.; de Hosson, J. Th. M. Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. This paper presents a detailed analysis of high-load friction atomic force microscopy ͑AFM͒ images of layered structures in terms of a discrete stick-slip model. It turned out that based on a geometric approach, the characteristics of slip behavior can be linked to the cantilever/sample spring anisotropy. In particular, the use of polar scans is emphasized to analyze and to quantify these characteristics. The measured stiffness as derived from the slip behavior is in correspondence with the stiffness inferred from static friction. It is concluded that the combined stiffness of substrate and cantilever is constant during an AFM scan in a given direction, which supports the simple stick-slip model.

Scratching the Surface: Fundamental Investigations of Tribology with Atomic Force Microscopy

“…·The two-dimensional stick−slip effects observed in experimental images can be reproduced in these simulations, ,,,,, including observable effects in the images due to anisotropy in the cantilever spring constants (lateral vs longitudinal). ,,,, …”

“…Several theoretical efforts to explain and model atomic-scale stick−slip behavior, specifically in the context of force microscopy have appeared in the literature. These can be divided into semiclassical simulations/calculations, − and molecular dynamics simulations. − Primarily the semiclassical models attempt to explain the mechanics of stick−slip behavior. The starting point for these models is the Tomlinson model proposed more than five decades ago .…”

“…Several theoretical efforts to explain and model atomic-scale stick-slip behavior, specifically in the context of force microscopy have appeared in the literature. These can be divided into semiclassical simulations/calculations, [141][142][143][144][145][146][147][148][149][150][151][152][153] and molecular dynamics simulations. [154][155][156][157][158][159][160] Primarily the semiclassical models attempt to explain the mechanics of stickslip behavior.…”

Probing the interface potential in stick/slip friction by a lateral force modulation technique

“…Unit cells MX 2 , in which M represents the and a allow for an exact description of the stick/slip patterns in terms of tip strain coordinates transition metal and X represents a chalcogen, are connected by relatively strong chemical bonds (e x , e y ), as shown in Fig. 2 [12]. Thus, the two-dimensional character of stick/slip within the sandwich but only weakly bonded to adjacent sandwiches.…”

“…Experimentally, this the past, extensive scanning tunneling microscopy (STM ) and atomic force microscopy (AFM ) situation is obtained if the tip is pulled along a main axis of the surface-lattice, provided that scans studies on these materials have been carried out. Observed effects are charge density waves (CDW ) with zigzag movements are excluded from the analysis [12]. [9] and pinning of CDW by point defects by STM as well as periodic lattice distortions (PLD) [10] For layered materials, the maximum strain length e 0 turns out to be divided over the cantilever by AFM and more recently a measurable deformation occurring during stick/slip friction [11].…”