Friction Dynamics on Rough Agar Gel Surfaces
| Autor: | Koki Shinomiya, Yoshimune Nonomura, Hina Okawara |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Surface (mathematics)
Materials science Friction 030309 nutrition & dietetics Surface Properties General Chemical Engineering Agar gel Quantitative Biology::Cell Behavior 03 medical and health sciences Reciprocating motion 0404 agricultural biotechnology Fractal Intestinal walls Composite material 0303 health sciences integumentary system Dynamics (mechanics) 04 agricultural and veterinary sciences General Medicine General Chemistry 040401 food science body regions Agar Rough surface Lubrication human activities Gels |
| Zdroj: | Journal of oleo science. 68(9) |
| ISSN: | 1347-3352 |
| Popis: | Gels exhibit complex friction behavior. This study aims to evaluate the friction forces between two fractal agar gel substrates under sinusoidal motion to show the effect of rough surfaces on friction dynamics. In a previous study, we observed an asymmetric friction profile during reciprocating motion and an ultra-low friction state on flat agar gel surfaces. On the other hand, these distinct friction profiles were not observed on rough agar gel surfaces. We determined that this distinction was caused by the contact state between fractal agar gel surfaces; no thick water film was formed on the fractal surfaces because the rough structure provided channels to drain water from the interface. These physical insights are useful not only for developing biofunctional materials but also for understanding surface phenomena on biosurfaces including tongues and small intestinal walls. |
| Databáze: | OpenAIRE |
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