Structure evolution and stress transition in diamond-like carbon films by glancing angle deposition

Lei, Yu; Jiang, Jinlong; Wang, Yubao; Bi, Tiantian; Zhang, Lijuan

doi:10.1016/j.apsusc.2019.02.063

Cited by 26 publications

(13 citation statements)

References 58 publications

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“…It can be seen that oxygen in the sample can belong to various functional groups. In addition to an identification of oxygen-containing groups from an analysis of the high-resolution C1 s spectra, these spectra could be used to determine the sp 3 / sp 2 ratio because the energy intervals between the C1 s peaks corresponding to the C( sp 2 ) and C( sp 3 ) states are in the range from 0.4 eV [ 56 ] to 0.9 eV [ 67 ]. Therefore, to determine the sp 3 / sp 2 ratio, one should decompose the C1s peak into two or more peaks.…”

Section: Resultsmentioning

confidence: 99%

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The Concentration of C(sp3) Atoms and Properties of an Activated Carbon with over 3000 m2/g BET Surface Area

et al. 2021

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Plasmonic nanoresonators consisting of a gold nanorod and a spherical silica core and gold shell, both coated with a gain layer, were optimized to maximize the stimulated emission in the near-field (NF-c-type) and the outcoupling into the far-field (FF-c-type) and to enter into the spasing operation region (NF-c*-type). It was shown that in the case of a moderate dye concentration, the nanorod has more advantages: smaller lasing threshold and larger slope efficiency and larger achieved intensities in the near-field in addition to FF-c-type systems’ smaller gain and outflow threshold, earlier dip-to-peak switching in the spectrum and slightly larger far-field outcoupling efficiency. However, the near-field (far-field) bandwidth is smaller for NF-c-type (FF-c-type) core–shell nanoresonators. In the case of a larger dye concentration (NF-c*-type), although the slope efficiency and near-field intensity remain larger for the nanorod, the core–shell nanoresonator is more advantageous, considering the smaller lasing, outflow, absorption and extinction cross-section thresholds and near-field bandwidth as well as the significantly larger internal and external quantum efficiencies. It was also shown that the strong-coupling of time-competing plasmonic modes accompanies the transition from lasing to spasing occurring, when the extinction cross-section crosses zero. As a result of the most efficient enhancement in the forward direction, the most uniform far-field distribution was achieved.

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Section: Resultsmentioning

confidence: 99%

“…For example, the intensities of the peaks and the background can be varied, and the positions of the peaks and their half-widths were fixed [ 56 ]. Peaks with bond energies of more than 285.1 eV were attributed to carbon atoms, which bond with oxygen [ 67 ].…”

Section: Resultsmentioning

confidence: 99%

The Concentration of C(sp3) Atoms and Properties of an Activated Carbon with over 3000 m2/g BET Surface Area

et al. 2021

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“…For carbon-based film, its mechanical properties would be affected by the sp 3 phase content [35]. For diamond film, its residual stress can be calculated by the formula: σ(GPa)=αΔυ=−0.567(υ − υ 0 ) (cm −1 ), where Δυ is the difference between the measured and natural stress-free diamond peak shifts υ 0 that is taken to be the Raman peak position of the natural diamond when no pressure is applied [36].…”

Section: Resultsmentioning

confidence: 99%

Effect of bottom micro-crystalline diamond (MCD) layer and top nano-crystalline diamond (NCD) layer onto the tribological behavior of (MCD/NCD) bilayer film

Luo

et al. 2020

Mater. Res. Express

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In this study, a comparative study of a series of (MCD/NCD) bilayer films with different MCD grain sizes and NCD layer thickness deposited on cemented tungsten carbide (WC-Co) flat substrates was conducted by changing the deposition time. Tribological behaviors of these diamond films were evaluated by using a reciprocal tribometer without lubrication. In friction test against Si 3 N 4 balls, the (3hMCD/6hNCD) bilayer film showed the lowest coefficient of friction (0.059) and wear rates of counterpart balls (1.75×10 −6 mm 3 N −1 m −1 ) because of its lowest surface roughness and higher sp 2 content. This work provides a guide to choose suitable (MCD/NCD) bilayer basic structure in multilayer diamond film for getting a fine diamond film with low roughness and great tribological performance for different applications.

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“…DLC coatings have a dense microstructure, chemical inertness, and high mechanical hardness [158]. Due to the structure of DLC coatings, high residual stress is built within these coatings [159]. Consequently, surface adhesion would be weak resulting in the delamination of the coatings at early stages.…”

Section: Dlc Coatingsmentioning

confidence: 99%

Recent progress in materials used towards corrosion protection of Mg and its alloys

Ghazanfari

Hasanizadeh

Eskandarinezhad

et al. 2020

jcc

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Structure evolution and stress transition in diamond-like carbon films by glancing angle deposition

Cited by 26 publications

References 58 publications

The Concentration of C(sp3) Atoms and Properties of an Activated Carbon with over 3000 m2/g BET Surface Area

The Concentration of C(sp3) Atoms and Properties of an Activated Carbon with over 3000 m2/g BET Surface Area

Effect of bottom micro-crystalline diamond (MCD) layer and top nano-crystalline diamond (NCD) layer onto the tribological behavior of (MCD/NCD) bilayer film

Recent progress in materials used towards corrosion protection of Mg and its alloys

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