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Kvantovaya Elektronika, 2020, Volume 50, Number 8, Pages 750–755 (Mi qe17294)  

Interaction of laser radiation with matter. Laser plasma

Effect of focused nanosecond laser pulse irradiation on microtribological properties of diamond-like films

V. D. Frolova, P. A. Pivovarova, E. V. Zavedeeva, M. L. Shupeginb, S. M. Pimenova

a Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
b National Research University "Moscow Power Engineering Institute"
References:
Abstract: We have examined the effect of focused nanosecond laser pulses on the formation and tribological properties of microstructures in the form of a matrix of craters produced in a – C : H : Si : O diamond-like films (DLFs), both undoped and doped with tungsten. The studies are performed by scanning probe microscopy (SPM) using SPM probes of standard design with a tip and probes without a tip (tipless-type probes). A special procedure is developed for assessing the wettability (contact angle) of individual sections of the laser-induced microstructure by the local adhesion force. According to estimates, the material inside the crater becomes softer and more hydrophobic as a result of laser irradiation. This is manifested to the greatest extent in tungsten-doped DLFs, where the crater walls are arranged like terraces formed by 'nanoflakes', i.e. grains of the substance. Scanning of microstructures with a tipless probe in the regime of lateral force microscopy demonstrates a decrease in friction in the crater area.
Keywords: nanosecond laser pulses, diamond-like film, microstructure, microtribological properties.
Funding agency Grant number
Russian Science Foundation 15-12-00039
Received: 09.12.2019
Revised: 13.01.2020
English version:
Quantum Electronics, 2020, Volume 50, Issue 8, Pages 750–755
DOI: https://doi.org/10.1070/QEL17219
Bibliographic databases:
Document Type: Article
Language: Russian


Citation: V. D. Frolov, P. A. Pivovarov, E. V. Zavedeev, M. L. Shupegin, S. M. Pimenov, “Effect of focused nanosecond laser pulse irradiation on microtribological properties of diamond-like films”, Kvantovaya Elektronika, 50:8 (2020), 750–755 [Quantum Electron., 50:8 (2020), 750–755]
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