Nanotribological behavior of bioinspired textured surfaces with directional characteristics

Grewal, Harpreet Singh; Pendyala, Prashant; Shin, Hyogeun; Cho, Il‐Joo; Yoon, Eui-Sung

doi:10.1016/j.wear.2017.01.033

Cited by 18 publications

(9 citation statements)

References 42 publications

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“…For uncoated Si, all textures showed higher friction than the reference, probably because texturing increases hydrophilicity for hydrophilic surfaces [79]. DLC films tended to reduce adhesion and friction, in particular F-DLC [218].…”

Section: Indirect Structuring Of Dlcmentioning

confidence: 90%

“…Lithography followed by either reactive ion beam etching [80,217,218] or chemical etching [61,219], micro-machining [220] and polymer replication [221] have also been used for indirect texturing of DLCs. Direct texturing of DLCs using alternative approaches other than LST has been mainly achieved by masking the DLC coating and then etching with a reactive ion beam [222][223][224].…”

Section: Diamond-like Carbon and Surface Texturesmentioning

confidence: 99%

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Synergetic effects of surface texturing and solid lubricants to tailor friction and wear – A review

Rosenkranz

Costa

Baykara

et al. 2021

Tribology International

337

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Surface texturing and solid lubricants have demonstrated the ability to substantially reduce friction and wear under dry conditions. In recent decades, these two technologies have been combined to leverage the advantages of both for superior tribological performance. This review article first summarizes the state-of-the-art regarding surface texturing and solid lubricants, including soft metals, polytetrafluoroethylene, diamond-like carbon and 2D layered materials. Then, the synergy between surface textures and solid lubricants is discussed, with particular emphasis on the underlying mechanisms. Finally, gaps in the existing understanding of these synergies are identified and opportunities for future research are suggested.

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Section: Indirect Structuring Of Dlcmentioning

confidence: 90%

Section: Diamond-like Carbon and Surface Texturesmentioning

confidence: 99%

Synergetic effects of surface texturing and solid lubricants to tailor friction and wear – A review

Rosenkranz

Costa

Baykara

et al. 2021

Tribology International

337

View full text Add to dashboard Cite

show abstract

“…Researchers have started to look to biology in search for morphological textures that would allow for tribologically optimized surfaces [ 17 ]. Among the animals and biological structures that have been considered are butterfly wings [ 18 ], beetles and earthworms [ 19 ], scorpions [ 20 ] as well as (and most importantly) the skin of snakes and sand fish lizards [ 21 – 24 ]. It has been demonstrated, for example, that sandfish skin exhibits low friction and little wear [ 25 – 26 ].…”

Section: Introductionmentioning

confidence: 99%

Friction reduction through biologically inspired scale-like laser surface textures

Schneider¹,

Djamiykov²,

Greiner³

2018

Beilstein J. Nanotechnol.

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Reducing friction forces is a major challenge in many engineering applications involving moving parts. For the past 50 years, the morphological texturing of surfaces for improving tribological properties has been investigated. Only recently, the application of biologically inspired surface features, like scales found on lizards and snakes, has come to the attention of tribologists. Here, we present results of the lubricated and unlubricated performance of biologically inspired scale-like textures applied with laser light to the surface of bearing steel pins. These were paired in unidirectional sliding against metallic (100Cr6), polymeric (PEEK) and ceramic (Al2O3) counter bodies. Additionally, a possible size effect was investigated by changing the scale diameter between 13 and 150 µm under dry sliding contact against sapphire. Our results demonstrate that depending on the contact conditions a biologically inspired surface morphology has the potential to reduce friction forces by more than 80%. However, under certain conditions, especially for slow-moving lubricated steel-on-steel and steel-on-ceramic contacts, these surface morphologies may increase friction as well. Similar to classical laser surface textures, such as round dimples, these biologically inspired morphologies need to be carefully optimized for each tribological system in which they are intended to be applied. There is no standard solution for all sliding conditions. The results presented here demonstrate that such efforts have the potential to yield significant reduction in friction forces and are expected to spark future research in the field of biologically inspired surface morphologies applied to tribological contacts.

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“…Studies have also been performed by researchers on bioinspired surface textures using chemical vapor deposition (CVD) to see the effects on COF and wetting behavior. Grewal et al 187 fabricated these bioinspired textures inspired by butterfly wings on a silicon wafer surface. The textured surface was then coated with PTFE and DLC using plasma-enhanced CVD (PECVD).…”

Section: Other Miscellaneous Techniquesmentioning

confidence: 99%

Recent advances in the mechanical durability of superamphiphobic surfaces: A review

Singh

Kango

Sharma

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part J:

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Superamphiphobic (water and oil repellent) surfaces have distinct application areas such as anti-corrosion, anti-friction, anti-icing, self-cleaning, etc. To fabricate these types of surfaces, the base material must have low surface energy and dual-scale roughness (micro and nano levels). The durability of such surfaces is indicated by the duration up to which they remain stable and effective. When mechanical forces interact with these surfaces, it deteriorates the surface integrity and ultimately degrades its superamphiphobic property. Hence, these surfaces have very limited mechanical wear sturdiness and long-term durability. Therefore, in this article, efforts have been made to review the different types of mechanical durability tests performed on superamphiphobic metallic and non-metallic surfaces. Moreover, various kinds of surface texturing techniques in context with durability of such surfaces have been discussed. Finally, from the reported literature, critical conclusions, challenges, and scopes for future work have also been presented.

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Nanotribological behavior of bioinspired textured surfaces with directional characteristics

Cited by 18 publications

References 42 publications

Synergetic effects of surface texturing and solid lubricants to tailor friction and wear – A review

Synergetic effects of surface texturing and solid lubricants to tailor friction and wear – A review

Friction reduction through biologically inspired scale-like laser surface textures

Recent advances in the mechanical durability of superamphiphobic surfaces: A review

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