Eliminating delamination of graphite sliding on diamond-like carbon

Gongyang, Yujie; Qu, Cangyu; Zhang, Shoumo; Ma, Ming; Zheng, Quanshui

doi:10.1016/j.carbon.2018.02.080

Cited by 23 publications

(14 citation statements)

References 43 publications

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“…Graphite/DLC heterojunctions were fabricated using the technique developed in a previous publication [23]. Briefly, square shaped graphite mesas (typical height of 1 μm and side length of 4 μm) were fabricated through electron beam lithography and reactive ion etching (RIE).…”

Section: Methodsmentioning

confidence: 99%

“…The self-retractable graphite mesas were then transferred onto a DLC surface using a tungsten tip attached to a nano-manipulator (Kleindiek MM-3A) to form the heterojunctions under ambient conditions. The DLC surface was prepared in the same way as reported in a previous publication [23], i.e. by cutting a DLC slice without lubricant from a hard disk drive (manufactured by the West Digital Corporation) into smaller pieces with sizes of 1 cm × 1 cm.…”

Section: Methodsmentioning

confidence: 99%

“…To widen the scope of possible applications of the microscale superlubricity, the frictional properties of graphite mesa in contact with other materials should be investigated. In fact, microscale heterojunctions of graphite and other materials including h-BN [18], MoS 2 [19−21], mica [22], diamond-like carbon [23,24] have been fabricated by transferring graphite mesas onto the target surface. These heterostructures open wide opportunities for tuning interfacial frictional properties.…”

Section: Introductionmentioning

confidence: 99%

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Temperature and velocity dependent friction of a microscale graphite-DLC heterostructure

Gongyang

Ouyang

et al. 2019

Friction

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One of the promising approaches to achieving large scale superlubricity is the use of junctions between existing ultra-flat surface together with superlubric graphite mesas. Here we studied the frictional properties of microscale graphite mesa sliding on the diamond-like carbon, a commercially available material with a ultra-flat surface. The interface is composed of a single crystalline graphene and a diamond-like carbon surface with roughness less than 1 nm. Using an integrated approach, which includes Argon plasma irradiation of diamond-like carbon surfaces, X-ray photoelectron spectroscopy analysis and Langmuir adsorption modeling, we found that while the velocity dependence of friction follows a thermally activated sliding mechanism, its temperature dependence is due to the desorption of chemical groups upon heating. These observations indicate that the edges have a significant contribution to the friction. Our results highlight potential factors affecting this type of emerging friction junctions and provide a novel approach for tuning their friction properties through ion irradiation.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Temperature and velocity dependent friction of a microscale graphite-DLC heterostructure

Gongyang

Ouyang

et al. 2019

Friction

Self Cite

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“…Theory and experimental works further studied the interfacial properties of graphene on C(111) surface, and revealed that weak van der Waals (vdW) interactions between graphene and diamond film dominate it's the structures and properties [33,34,[36][37][38][39]. Furthermore, several experimental studies have been carried on the friction properties of graphene on DLC and DSC films, where it was found that graphene can protect the surfaces and reduce its interfacial friction [40][41][42][43][44]. For example, Shen et al, investigated the friction of DLC film by using graphene as a solid lubricant [43].…”

Section: Introductionmentioning

confidence: 99%

The Flexible Lubrication Performance of Graphene Used in Diamond Interface as a Solid Lubricant: First-Principles Calculations

Wang

Yang

et al. 2019

Nanomaterials

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The interfacial friction performances of graphene covered and hydrogen-terminated diamond surfaces were investigated comparatively by first-principles calculations within density functional theory (DFT). Both systems exhibit similar excellent lubricating effects under small load, but the graphene covered interface presents small friction than that of hydrogenated system for the larger load. The calculated interfacial friction between two sheets of graphene covered diamond surface increases slowly than that of hydrogenated system in a wide range of pressure scale, and the friction difference between the two systems increases with increasing external pressure, indicating that graphene has flexible lubricating properties with high load-carrying capacity. This behavior can be attributed to the large interlayer space and a more uniform interlayer charge distribution of graphene covered diamond interface. Our investigations suggest that graphene is a promising candidate as solid lubricate used in diamond film, and are helpful for the understanding of interfacial friction properties of diamond film.

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“…It is a crystalline carbon with a hexagonal-layered-structure crystal lattice, each layer has the single-atom thickness of graphene [8]. This structure gives graphite excellent characteristics, such as conductivity, heat conduction, Appl.…”

Section: Introductionmentioning

confidence: 99%

Experiment Research on Micro-/Nano Processing Technology of Graphite as Basic MEMS Material

Zhang

Liu

et al. 2019

Applied Sciences

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Graphite is expected to be a common choice for basic microelectromechanical-system (MEMS) material in the future. However, in order to become a basic MEMS material, it is very important for graphite to be adapted to the commonly-used micro-/nanoprocessing technology. Therefore, this paper used a directly lithography and etching process to study micro-, /nanoprocessing on graphite. The results show that the graphite surface is suitable for lithography, and that different shapes and sizes of photoresist patterns can be directly fabricated on the graphite surface. In addition, the micro-meter height of photoresist could still resist plasma etching when process nanometers height of graphite structures. Therefore, graphite with photoresist patterns were directly processed by etching, and nanometer amounts of graphite were etched. Moreover, micro-/nanoscale graphite structure with height ranges from 29.4 nm–30.9 nm were fabricated with about 23° sidewall.

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Eliminating delamination of graphite sliding on diamond-like carbon

Cited by 23 publications

References 43 publications

Temperature and velocity dependent friction of a microscale graphite-DLC heterostructure

Temperature and velocity dependent friction of a microscale graphite-DLC heterostructure

The Flexible Lubrication Performance of Graphene Used in Diamond Interface as a Solid Lubricant: First-Principles Calculations

Experiment Research on Micro-/Nano Processing Technology of Graphite as Basic MEMS Material

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