Friction characteristics between two nanostripe surfaces

Hayashi, Motoki; Ando, Yasuhisa

doi:10.1016/j.triboint.2019.03.046

Cited by 2 publications

(1 citation statement)

References 23 publications

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“…The nanostripe fabrication enables the arrangement of grooves of two different scales on surfaces-microgrooves with widths and depths of approximately 1 µm, and nanogrooves with widths and depths in the order of hundreds of nanometers and tens of nanometers, respectively (Hayashi and Ando, 2019). The micro-and nanogrooves can be arranged to create arrays of micro-and nanogrooves (i.e., MN-groove arrays), which, in turn, can be further arranged twodimensionally to create hierarchical patterns.…”

Section: Introductionmentioning

confidence: 99%

Determining lubrication properties of hierarchical groove patterns using mesoscale raster-scanning measurements

SHIOJIMA

ANDO

MIYAKE

et al. 2022

JAMDSM

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In this study, we characterized the lubrication properties of two different hierarchical patterns comprising microand nanogrooves. The friction coefficient distribution was measured using a convex lens-the friction coefficients were found to periodically undulate along the scan lines with a period equal to the unit pattern. The variation of friction coefficient was more apparent in the case of the Type L pattern with the low boundary bands. For the Type H pattern with the high boundary bands, the undulation in the friction coefficient became clearer at higher sliding speeds, and concurrently, its average friction coefficient decreased with the higher sliding speed. Numerical calculations revealed that oil films formed more easily on Type H patterns than on Type L ones. When pause durations were included in Type H friction tests, the kinetic friction coefficient decreased when the lens slid parallel to the micro/nanogrooves, whereas it was not affected during orthogonal friction.

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Section: Introductionmentioning

confidence: 99%