Low‐Temperature Synthesis of Graphene by ICP‐Assisted Amorphous Carbon Sputtering

Ye, Xing; Zhou, Haiping; Levchenko, Igor; Bazaka, Kateryna; Xu, Shuyan; Xiao, Shuzhang

doi:10.1002/slct.201800911

Cited by 7 publications

(4 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Many papers reported Raman spectra after background removal to show the D-and G-bands clearly (as shown in Fig. 3) [88][89][90][91][92][93]. However, it should be noted that the uorescence background in a Raman spectrum gives very important structural information.…”

Section: Resultsmentioning

confidence: 99%

Do DLC-like features in Raman spectra of tribofilms really mean they are DLC formed by friction?

Jang

Khan³

et al. 2022

Preprint

View full text Add to dashboard Cite

Many previous studies of tribofilms have interpreted D- and G-bands in Raman spectra as evidence that diamond-like carbon (DLC) was formed during sliding. DLC and other amorphous-carbon films are produced by high-energy processes or high-temperature pyrolysis. Since neither of these conditions commonly occurs in a sliding interface, it seems unlikely that such materials could be produced during simple frictional sliding. To understand this apparent contradiction, we systematically analyzed tribofilms produced from vapor and liquid lubrication experiments using Raman spectroscopy with varied laser power and wavelength. The results provide evidence that DLC-like features in Raman spectra of tribofilms formed from organic molecules originate, not by tribochemical synthesis in situ during the tribo-testing as suggested previously, but rather from post-synthesis photochemical degradation of carbonaceous organic matter during the Raman analysis.

show abstract

Section: Resultsmentioning

confidence: 99%

Do DLC-like features in Raman spectra of tribofilms really mean they are DLC formed by friction?

Jang

Khan³

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Coatings (metals [67], metal oxides [68,69], metal carbides [35], ceramics [70]), selfhealing materials [38] and various types of surface modification [71,72] are examples of technologies that could be adapted for the mitigation of corrosion on satellites. However, coatings could be damaged by micrometeorites, space debris and handling.…”

Section: Use Of Nanomaterials For Corrosion Mitigation In Spacementioning

confidence: 99%

Carbon Nanocomposites in Aerospace Technology: A Way to Protect Low-Orbit Satellites

et al. 2023

Self Cite

View full text Add to dashboard Cite

Recent advancements in space technology and reduced launching cost led companies, defence and government organisations to turn their attention to low Earth orbit (LEO) and very low Earth orbit (VLEO) satellites, for they offer significant advantages over other types of spacecraft and present an attractive solution for observation, communication and other tasks. However, keeping satellites in LEO and VLEO presents a unique set of challenges, in addition to those typically associated with exposure to space environment such as damage from space debris, thermal fluctuations, radiation and thermal management in vacuum. The structural and functional elements of LEO and especially VLEO satellites are significantly affected by residual atmosphere and, in particular, atomic oxygen (AO). At VLEO, the remaining atmosphere is dense enough to create significant drag and quicky de-orbit satellites; thus, thrusters are needed to keep them on a stable orbit. Atomic oxygen-induced material erosion is another key challenge to overcome during the design phase of LEO and VLEO spacecraft. This review covered the corrosion interactions between the satellites and the low orbit environment, and how it can be minimised through the use of carbon-based nanomaterials and their composites. The review also discussed key mechanisms and challenges underpinning material design and fabrication, and it outlined the current research in this area.

show abstract

“…Among the many methods used for VOG preparation, chemical vapor deposition (CVD) has demonstrated great potential for economical mass production, however, it requires elevated temperatures (800-1000 • C) and the costs for industrial manufacturing are high [24][25][26]. VOG growth can be achieved at lower temperatures (<800 • C) if the inductively coupled plasma chemical vapor deposition method (ICP CVD) is used, and it has become a key technique for the synthesis of high-quality coating without material damage and undesired defect formation [27][28][29]. Another advantage of CVD is due to the broad choice of available substrates for VOG preparation (e.g., SiO 2 and Al 2 O 3 [30], Si [31], Ni [32], stainless steel [33][34][35][36], Cu [37][38][39][40], Co [41], Al and TiO 2 [42], Al 2 O 3 [43], and Pt [44][45][46]).…”

Section: Introductionmentioning

confidence: 99%

Properties of Nitrogen/Silicon Doped Vertically Oriented Graphene Produced by ICP CVD Roll-to-Roll Technology

Rozel¹,

Radziuk

Mikhnavets

et al. 2019

Coatings

View full text Add to dashboard Cite

Simultaneous mass production of high quality vertically oriented graphene nanostructures and doping them by using an inductively coupled plasma chemical vapor deposition (ICP CVD) is a technological problem because little is understood about their growth mechanism over enlarged surfaces. We introduce a new method that combines the ICP CVD with roll-to-roll technology to enable the in-situ preparation of vertically oriented graphene by using propane as a precursor gas and nitrogen or silicon as dopants. This new technology enables preparation of vertically oriented graphene with distinct morphology and composition on a moving copper foil substrate at a lower cost. The technological parameters such as deposition time (1–30 min), gas partial pressure, composition of the gas mixture (propane, argon, nitrogen or silane), heating treatment (1–60 min) and temperature (350–500 °C) were varied to reveal the nanostructure growth, the evolution of its morphology and heteroatom’s intercalation by nitrogen or silicon. Unique nanostructures were examined by FE-SEM microscopy, Raman spectroscopy and energy dispersive X-Ray scattering techniques. The undoped and nitrogen- or silicon-doped nanostructures can be prepared with the full area coverage of the copper substrate on industrially manufactured surface defects. Longer deposition time (30 min, 450 °C) causes carbon amorphization and an increased fraction of sp3-hybridized carbon, leading to enlargement of vertically oriented carbonaceous nanostructures and growth of pillars.

show abstract

Low‐Temperature Synthesis of Graphene by ICP‐Assisted Amorphous Carbon Sputtering

Cited by 7 publications

References 40 publications

Do DLC-like features in Raman spectra of tribofilms really mean they are DLC formed by friction?

Do DLC-like features in Raman spectra of tribofilms really mean they are DLC formed by friction?

Carbon Nanocomposites in Aerospace Technology: A Way to Protect Low-Orbit Satellites

Properties of Nitrogen/Silicon Doped Vertically Oriented Graphene Produced by ICP CVD Roll-to-Roll Technology

Contact Info

Product

Resources

About