Self-healing phenomenon and dynamic hardness of C60-based nanocomposite coatings

Oleksiy V. Penkov; Volodymyr E. Pukha; Alexander Yu Devizenko; Hae Jin Kim; Dae Eun Kim

doi:10.1021/nl500321g

Self-healing phenomenon and dynamic hardness of C₆₀-based nanocomposite coatings

Oleksiy V. Penkov, Volodymyr E. Pukha, Alexander Yu Devizenko, Hae Jin Kim, Dae Eun Kim

Department of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

The phenomenon of surface self-healing in C₆₀-based polymer coatings deposited by ion-beam assisted physical vapor deposition was investigated. Nanoindentation of the coatings led to the formation of a protrusion rather than an indent. This protrusion was accompanied by an abnormal shape of the force-distance curve, where the unloading curve lies above the loading curve due to an additional force applied in pulling the indenter out of the media. The coatings exhibited a nanocomposite structure that was strongly affected by the ratio of C₆₀ ion and C₆₀ molecular beam intensities during deposition. The coatings also demonstrated the dynamic hardness effect, where the effective value of the hardness depends significantly on the indentation speed.

Original language	English
Pages (from-to)	2536-2540
Number of pages	5
Journal	Nano letters
Volume	14
Issue number	5
DOIs	https://doi.org/10.1021/nl500321g
Publication status	Published - 2014 May 14

All Science Journal Classification (ASJC) codes

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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10.1021/nl500321g

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abstract = "The phenomenon of surface self-healing in C60-based polymer coatings deposited by ion-beam assisted physical vapor deposition was investigated. Nanoindentation of the coatings led to the formation of a protrusion rather than an indent. This protrusion was accompanied by an abnormal shape of the force-distance curve, where the unloading curve lies above the loading curve due to an additional force applied in pulling the indenter out of the media. The coatings exhibited a nanocomposite structure that was strongly affected by the ratio of C60 ion and C60 molecular beam intensities during deposition. The coatings also demonstrated the dynamic hardness effect, where the effective value of the hardness depends significantly on the indentation speed.",

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AU - Penkov, Oleksiy V.

AU - Pukha, Volodymyr E.

AU - Devizenko, Alexander Yu

AU - Kim, Hae Jin

AU - Kim, Dae Eun

PY - 2014/5/14

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AB - The phenomenon of surface self-healing in C60-based polymer coatings deposited by ion-beam assisted physical vapor deposition was investigated. Nanoindentation of the coatings led to the formation of a protrusion rather than an indent. This protrusion was accompanied by an abnormal shape of the force-distance curve, where the unloading curve lies above the loading curve due to an additional force applied in pulling the indenter out of the media. The coatings exhibited a nanocomposite structure that was strongly affected by the ratio of C60 ion and C60 molecular beam intensities during deposition. The coatings also demonstrated the dynamic hardness effect, where the effective value of the hardness depends significantly on the indentation speed.

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Self-healing phenomenon and dynamic hardness of C₆₀-based nanocomposite coatings

Abstract

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