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Open AccessArticle

Effect of Normal Contact Vibration on Nano-Scale Friction

School of Energy, Materials and Chemical Engineering, KOREATECH—Korea University of Technology and Education, Cheonan 31253, Korea
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Lubricants 2019, 7(11), 99; https://doi.org/10.3390/lubricants7110099
Received: 28 September 2019 / Revised: 5 November 2019 / Accepted: 5 November 2019 / Published: 7 November 2019
In this work, we investigate the effect of contact vibration on the friction of sliding single asperity contacts of different adhesion strength over a wide range of load and vibration amplitude. We convert the amplitude of vibration to its equivalent modulation force and tip-oscillation velocity. We observe a logarithmic relationship between friction and the ratio of the modulation force to the normal force and between friction and the ratio of sliding velocity to the tip-oscillation velocity. We discuss these logarithmic dependencies based on an induced corrugation of the tip-sample interaction potential. View Full-Text
Keywords: metals; graphene; vibration; friction; AFM metals; graphene; vibration; friction; AFM
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MDPI and ACS Style

Choi, J.H.; Kwan, S.K.; Ko, H.E.; Park, J.H.; Kim, D.K.; Park, H.W.; Caron, A. Effect of Normal Contact Vibration on Nano-Scale Friction. Lubricants 2019, 7, 99.

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