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A study on the effect of fingerprints in a wet system

Title
A study on the effect of fingerprints in a wet system
Authors
Kim, DonghyunYun, Dong Won
DGIST Authors
Kim, Donghyun; Yun, Dong Won
Issue Date
2019-11
Citation
Scientific Reports, 9
Type
Article
Article Type
Article
Keywords
FRICTIONCONTACT
ISSN
2045-2322
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.
URI
http://hdl.handle.net/20.500.11750/10922
DOI
10.1038/s41598-019-51694-9
Publisher
Nature Publishing Group
Related Researcher
  • Author Yun, Dongwon Bio Robotics and Mechatronics Laboratory
  • Research Interests Biomimetic Robot; Soft Robotics; Robot elementary technology : Sensors and actuators; Study on the medical application; Study on the industrial application
Files:
Collection:
Department of Robotics EngineeringBio Robotics and Mechatronics Laboratory1. Journal Articles


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