Possible Origin of D- and G-band Features in Raman Spectra of Tribofilms

Yu Sheng Li; Seokhoon Jang; Arman Mohammad Khan; Tobias V. Martin; Andrew L. Ogrinc; Q. Jane Wang; Ashlie Martini; Yip Wah Chung; Seong H. Kim

doi:10.1007/s11249-023-01728-1

Possible Origin of D- and G-band Features in Raman Spectra of Tribofilms

Yu Sheng Li, Seokhoon Jang, Arman Mohammad Khan, Tobias V. Martin, Andrew L. Ogrinc, Q. Jane Wang, Ashlie Martini, Yip Wah Chung, Seong H. Kim

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Abstract

In the Raman analysis of tribofilms produced from organic precursors, the D- and G-band features are often observed, which resemble the characteristic bands of diamond-like carbon (DLC), amorphous carbon (a-C), or graphitic materials. This study reports experimental evidence that the D- and G-bands features in the Raman spectra of tribofilms could be generated by photochemical degradation of triboproducts due to the focused irradiation of laser beam during the Raman analysis, indicating that they are not unique to the genuine structure of the tribofilm produced via friction. This finding suggests that other complementary and non-destructive characterization is required to determine whether DLC, a-C, or graphitic species are produced tribochemically by frictional shear. Graphical Abstract: [Figure not available: see fulltext.].

Original language	English (US)
Article number	57
Journal	Tribology Letters
Volume	71
Issue number	2
DOIs	https://doi.org/10.1007/s11249-023-01728-1
State	Published - Jun 2023

All Science Journal Classification (ASJC) codes

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1007/s11249-023-01728-1

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title = "Possible Origin of D- and G-band Features in Raman Spectra of Tribofilms",

abstract = "In the Raman analysis of tribofilms produced from organic precursors, the D- and G-band features are often observed, which resemble the characteristic bands of diamond-like carbon (DLC), amorphous carbon (a-C), or graphitic materials. This study reports experimental evidence that the D- and G-bands features in the Raman spectra of tribofilms could be generated by photochemical degradation of triboproducts due to the focused irradiation of laser beam during the Raman analysis, indicating that they are not unique to the genuine structure of the tribofilm produced via friction. This finding suggests that other complementary and non-destructive characterization is required to determine whether DLC, a-C, or graphitic species are produced tribochemically by frictional shear. Graphical Abstract: [Figure not available: see fulltext.].",

author = "Li, {Yu Sheng} and Seokhoon Jang and Khan, {Arman Mohammad} and Martin, {Tobias V.} and Ogrinc, {Andrew L.} and Wang, {Q. Jane} and Ashlie Martini and Chung, {Yip Wah} and Kim, {Seong H.}",

note = "Publisher Copyright: {\textcopyright} 2023, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.",

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language = "English (US)",

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T1 - Possible Origin of D- and G-band Features in Raman Spectra of Tribofilms

AU - Li, Yu Sheng

AU - Jang, Seokhoon

AU - Khan, Arman Mohammad

AU - Martin, Tobias V.

AU - Ogrinc, Andrew L.

AU - Wang, Q. Jane

AU - Martini, Ashlie

AU - Chung, Yip Wah

AU - Kim, Seong H.

PY - 2023/6

Y1 - 2023/6

N2 - In the Raman analysis of tribofilms produced from organic precursors, the D- and G-band features are often observed, which resemble the characteristic bands of diamond-like carbon (DLC), amorphous carbon (a-C), or graphitic materials. This study reports experimental evidence that the D- and G-bands features in the Raman spectra of tribofilms could be generated by photochemical degradation of triboproducts due to the focused irradiation of laser beam during the Raman analysis, indicating that they are not unique to the genuine structure of the tribofilm produced via friction. This finding suggests that other complementary and non-destructive characterization is required to determine whether DLC, a-C, or graphitic species are produced tribochemically by frictional shear. Graphical Abstract: [Figure not available: see fulltext.].

AB - In the Raman analysis of tribofilms produced from organic precursors, the D- and G-band features are often observed, which resemble the characteristic bands of diamond-like carbon (DLC), amorphous carbon (a-C), or graphitic materials. This study reports experimental evidence that the D- and G-bands features in the Raman spectra of tribofilms could be generated by photochemical degradation of triboproducts due to the focused irradiation of laser beam during the Raman analysis, indicating that they are not unique to the genuine structure of the tribofilm produced via friction. This finding suggests that other complementary and non-destructive characterization is required to determine whether DLC, a-C, or graphitic species are produced tribochemically by frictional shear. Graphical Abstract: [Figure not available: see fulltext.].

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Possible Origin of D- and G-band Features in Raman Spectra of Tribofilms

Abstract

All Science Journal Classification (ASJC) codes

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