Friction of Undulated Surfaces Coated with MoS<sub>2</sub>by Pulsed Laser Deposition

Mosleh, Mohsen; Laube, S.J.P.; Suh, Nam P.

doi:10.1080/10402009908982246

Cited by 20 publications

(13 citation statements)

References 12 publications

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“…Pairs of sliding surfaces, where one is smooth and the other is patterned with ridges or grooves, can reduce wear by removing particles that become trapped between them [ 14 , 15 ]. In engineered nonlubricated bearings, grooves oriented at an angle to the direction of sliding eliminate small wear particles that accumulate in the grooves.…”

Section: Discussionmentioning

confidence: 99%

Structure of a hinge joint with textured sliding surfaces in terrestrial isopods (Crustacea: Isopoda: Oniscidea)

Vittori

2021

Zoological Lett

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Background The study of joints in terrestrial arthropods can provide insights into the evolutionary optimization of contacting surfaces that slide without lubrication. This work reports on the structure of the joint between the propodus and the dactylus in terrestrial isopods, the most successful group of crustaceans on land, focusing on the woodlouse Porcellio scaber. Methods The joints were studied using fluorescence microscopy, 3D reconstruction, scanning electron microscopy and transmission electron microscopy. The obtained results were functionally interpreted using high-speed video recordings by analyzing the use of the joint during locomotion. Results In the joint, which allows the dactylus to move in a single plain, a semicircular process on the propodus fits into a groove on the dactylus and guides its movement. The sliding surfaces of the propodal process are textured in the form of parallel epicuticular ridges a few hundred nanometers thick. This texturing is selective: while the less heavily loaded surfaces are textured, the surfaces that support the isopod during standing and walking are smooth. In contrast, the groove on the dactylus is completely smooth. We found a similar surface texture in several other species of terrestrial isopods and one aquatic isopod. Conclusions The selective texturing of the joint may reduce wear by eliminating small particles. This effect of the ridges was confirmed using electron microscopy. The absence of ridges on heavily loaded surfaces may enhance the dissipation of forces in these regions.

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Section: Discussionmentioning

confidence: 99%

Structure of a hinge joint with textured sliding surfaces in terrestrial isopods (Crustacea: Isopoda: Oniscidea)

Vittori

2021

Zoological Lett

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“…One of the earliest works on PLD deposited MoS 2 was reported by Zabinski et al [39], where they have prepared PbO-MoS 2 thin films for tribological applications. Other early reports on MoS 2 thin films by PLD include growth of amorphous MoS 2 by McDevitt et al [40] and MoS 2 coatings for friction-related studies by Mosleh et al [41]. The major advancements in this area have been achieved in the past few years.…”

Section: Transition Metal Dichalcogenides (Tmdcs)mentioning

confidence: 99%

Pulsed Laser Deposition of Transition Metal Dichalcogenides-Based Heterostructures for Efficient Photodetection

Singh¹,

Krupanidhi²

2021

Practical Applications of Laser Ablation

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From the past few decades, photodetectors (PDs) are being regarded as crucial components of many photonic devices which are being used in various important applications. However, the PDs based on the traditional bulk semiconductors still face a lot of challenges as far as the device performance is concerned. To overcome these limitations, a novel class of two-dimensional materials known as transition metal dichalcogenides (TMDCs) has shown great promise. The TMDCs-based PDs have been reported to exhibit competitive figures of merit to the state-of-the-art PDs, however, their production is still limited to laboratory scale due to limitations in the conventional fabrication methods. Compared to these traditional synthesis approaches, the technique of pulsed laser deposition (PLD) offers several merits. PLD is a physical vapor deposition approach, which is performed in an ultrahigh-vacuum environment. Therefore, the products are expected to be clean and free from contaminants. Most importantly, PLD enables actualization of large-area thin films, which can have a significant potential in the modern semiconductor industry. In the current chapter, the growth of TMDCs by PLD for applications in photodetection has been discussed, with a detailed analysis on the recent advancements in this area. The chapter will be concluded by providing an outlook and perspective on the strategies to overcome the shortcomings associated with the current devices.

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“…Surface texturing has emerged in the last decade as a viable option for surface engineering resulting in significant improvement in load capacity, wear resistance, and friction coefficient of tribological mechanical components. Various techniques can be employed, such as vibrorolling, [4] undulated surfaces, [5,6] reactive ion etching, [7] abrasive jet machining, [8] lithography followed by etching and deposition techniques, [9,10] serial nano-indentation, [11] DLC films, [12] and scanning laser surface texturing. [13][14][15][16] One of the major goals in most of these techniques is to provid micro-dimples on the surface, which can serve as (a) a micro-hydrodynamic bearing in the case of full or mixed lubrication, (b) a micro reservoir for lubricant in case of starved lubrication conditions, or (c) a micro-trap for wear debris in either lubricated or dry sliding.…”

Section: Techniques For Creating Surfaces By Topographic Texturingmentioning

confidence: 99%

“…Furthermore, laser surface modulation was explored on Al-Si alloy for potential application in automotive engine 6. Laser surface alloyed and textured steel.…”

Section: Implementation Of the Principlementioning

confidence: 99%

Phase‐Modulated Hierarchical Surface Structures by Interfering Laser Beams

Daniel

Dahotre

2006

Adv Eng Mater

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A high‐energy laser interference direct modulation technique is proposed to develop surfaces for energy‐efficient performance based on microstructure and physical parameter control. By producing the surface features or particles at the nano to micron scale in an orderly and/or parallel manner with a lateral long‐range order, the surfaces can be configured for highly improved surface response for a host of properties, including wear and friction. Laser interference direct modulation can lead to an optimized composite of metallurgical (localized alloyed or composite regions) and topographic textures. The technique is rapid prototyping, low cost and one‐step method that can be well‐integrated into existing production lines without the need for any special atmosphere. It is usable for complex geometries of the components and the surface can be modulated for nano‐micro scale features on large areas. The present paper describes the principle behind the laser interference technique configured for surface modulation and provides the definitions of surface structures (features) evolved. Some examples of laser‐based surface modulation of materials systems are presented.

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Friction of Undulated Surfaces Coated with MoS₂by Pulsed Laser Deposition

Cited by 20 publications

References 12 publications

Structure of a hinge joint with textured sliding surfaces in terrestrial isopods (Crustacea: Isopoda: Oniscidea)

Structure of a hinge joint with textured sliding surfaces in terrestrial isopods (Crustacea: Isopoda: Oniscidea)

Pulsed Laser Deposition of Transition Metal Dichalcogenides-Based Heterostructures for Efficient Photodetection

Phase‐Modulated Hierarchical Surface Structures by Interfering Laser Beams

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Friction of Undulated Surfaces Coated with MoS2by Pulsed Laser Deposition

Cited by 20 publications

References 12 publications

Structure of a hinge joint with textured sliding surfaces in terrestrial isopods (Crustacea: Isopoda: Oniscidea)

Structure of a hinge joint with textured sliding surfaces in terrestrial isopods (Crustacea: Isopoda: Oniscidea)

Pulsed Laser Deposition of Transition Metal Dichalcogenides-Based Heterostructures for Efficient Photodetection

Phase‐Modulated Hierarchical Surface Structures by Interfering Laser Beams

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Friction of Undulated Surfaces Coated with MoS₂by Pulsed Laser Deposition