Abstract:
:In this paper, we study the influence of the fingerprint and sweat on the fingerprint on the friction between the hand and an object. When sweat contacts a finger or an object, it is sometimes easy to pick up the object. In particular, we can see this phenomenon when grasping a thin object such as paper and vinyl. The reason for this phenomenon is the increase of friction force, and this paper physically analyzes this natural phenomenon. To this end, we investigate the cause of the friction force between a solid and liquid to calculate the friction force when water is present within the fingerprint. To support the theoretical analysis, we conduct experiments to measure the friction force by making a finger-shaped silicon specimen. By comparing the theoretical and experimental results, we defined the change of friction force if there was water in the fingerprint. Through this study, it is possible to analyze the role of the fingerprint and sweat on the finger, and thereby explain the friction change depending on the amount of sweat.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Kim D,Yun Ddoi
10.1038/s41598-019-51694-9subject
Has Abstractpub_date
2019-11-12 00:00:00pages
16554issue
1issn
2045-2322pii
10.1038/s41598-019-51694-9journal_volume
9pub_type
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