Friction force microscopy in ultrahigh vacuum: an atomic-scale study on KBr(001)

Lüthi, R.; Meyer, Ernst; Howald, L.; Bammerlin, M.; Güntherodt, H.‐J.; Gyalog, T.; Thomas, H.

doi:10.1007/bf00209768

Cited by 6 publications

(3 citation statements)

References 16 publications

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“…Extensive studies have been conducted to identify the atomic-scale friction [11,12] and the wear characteristics of various materials using an AFM [13,14]. Several wear mechanisms at the micro/nano-scale have been suggested based on these studies.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of fracture during the approach process and wear mechanism of a silicon AFM tip

2005

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Section: Introductionmentioning

confidence: 99%

Characteristics of fracture during the approach process and wear mechanism of a silicon AFM tip

2005

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“…The KBr on plain Ir(111) shows a friction force of

, calculated from the area enclosed by the frictional hysteresis loop. This is quite a large value compared to bulk KBr, where the friction force is usually below 1

at the same load both in experiments [ 42 ] and calculations [ 43 ]. With an intercalated graphene layer the friction force of KBr on top decreases to

to a similar order of magnitude as for bulk KBr.…”

Section: Resultsmentioning

confidence: 97%

2D KBr/Graphene Heterostructures—Influence on Work Function and Friction

et al. 2022

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The intercalation of graphene is an effective approach to modify the electronic properties of two-dimensional heterostructures for attractive phenomena and applications. In this work, we characterize the growth and surface properties of ionic KBr layers altered by graphene using ultra-high vacuum atomic force microscopy at room temperature. We observed a strong rippling of the KBr islands on Ir(111), which is induced by a specific layer reconstruction but disappears when graphene is introduced in between. The latter causes a consistent change in both the work function and the frictional forces measured by Kelvin probe force microscopy and frictional force microscopy, respectively. Systematic density functional theory calculations of the different systems show that the change in work function is induced by the formation of a surface dipole moment while the friction force is dominated by adhesion forces.

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“…With the development of atomic force microscopy, the investigation of nm-scale sliding contact has become readily possible in various environments, such as under ultrahigh vacuum conditions, in ambient, or in a liquid environment (water, corrosive solutions, or oil-based lubricants) [9][10][11][12][13]. First nanotribological studies by AFM have investigated ideal surfaces in ultra-high vacuum (UHV)-conditions, such as KF, KBr, mica, HOPG, and single-crystalline metallic or semiconducting surfaces [14][15][16][17][18][19]. These early investigations yielded unpreceded insights into the structure's role in the friction of stiff surfaces.…”

Section: Introductionmentioning

confidence: 99%

Friction and Degradation of Graphite: A Nanotribological Approach

Kim,

Caron

2023

Tribol Lett

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We investigated the friction and wear of graphite by atomic force microscopy in sliding contact with SiO x , Pt, and diamond tips with contact forces up to several micronewtons. Graphite's tribology strongly depends on the chemistry of the counter body. With a SiO x tip, friction is governed by puckering. Wear initiates at surface steps by mechanical destabilization of folds. With a Pt tip, the adhesive effects lead to the exfoliation of graphite. At higher loads, friction crosses over from exfoliation to puckering. For SiO x and Pt, the wear rate is low in ambient conditions. In the case of diamond tips, we measured a friction coe cient and a wear rate of an order of magnitude larger than with SiO x or Pt tips.

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Friction force microscopy in ultrahigh vacuum: an atomic-scale study on KBr(001)

Cited by 6 publications

References 16 publications

Characteristics of fracture during the approach process and wear mechanism of a silicon AFM tip

Characteristics of fracture during the approach process and wear mechanism of a silicon AFM tip

2D KBr/Graphene Heterostructures—Influence on Work Function and Friction

Friction and Degradation of Graphite: A Nanotribological Approach

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