Characterization of Carbon Nanomaterials by Raman Spectroscopy

Szybowicz, Mirosław; Nowicka, Ariadna B.; Dychalska, Anna

doi:10.1016/b978-0-08-101973-3.00001-8

Cited by 8 publications

(9 citation statements)

References 77 publications

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“…The weak broad peak at around 1750 cm -1 can be considered as polishing induced defects. Similar defects have been reported in diamond by as a result of indentations, with diamond tips, as a result of the mechano-chemical reaction under high pressure and/or the localized interstitial carbon-vacancy (V-C=C-V) pairs within the diamond lattice after irradiation [49][50][51][52].…”

Section: Resultssupporting

confidence: 59%

“…With the decrease of the diamond lattice diameter caused by the mechanical polishing force, in the area where the defect formed, the energy range of different phonons involved in the Raman scattering process becomes wider. The more widely distributed phonon energy results in the broadening of Raman spectral lines [52]. Therefore, the stress release by the defect growth along the 'hard' directions in diamond has not caused a Raman shift of the diamond sp 3 peak but resulted in the broadening of the sp 3 peak after higher speed polishing.…”

Section: Resultsmentioning

confidence: 99%

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Subsurface cleavage of diamond after high-speed three-dimensional dynamic friction polishing

Zheng

Thornton

et al. 2020

Diamond and Related Materials

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Section: Resultssupporting

confidence: 59%

Section: Resultsmentioning

confidence: 99%

Subsurface cleavage of diamond after high-speed three-dimensional dynamic friction polishing

Zheng

Thornton

et al. 2020

Diamond and Related Materials

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“…Overfitting was briefly checked by obtaining similar fits from different initial conditions. The peaks' initial positions were chosen by using peaks commonly found in multiwalled carbon nanotubes (MWCNTs) [17,26,27]. The Gaussian curve was added as the four peaks used in other research (D,G,D',D2) did not describe it.…”

Section: Raman Spectroscopymentioning

confidence: 99%

Using non-destructive testing to predict bending modulus of carbon infiltrated-carbon nanotubes

Fagergren¹,

Sypherd²,

Snow³

et al. 2019

J. Micromech. Microeng.

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Carbon infiltrated carbon nanotubes (CI-CNT) are an important emerging material in several micro-electro-mechanical systems (MEMS) because of their unique mechanical and chemical properties. While CI-CNTs are only roughly conductive they work well in micro springs, levers, and meshes. However, fabrication of CI-CNTs can result in large mechanical property variation, and methods to characterize properties usually involve destructive testing. Destructive testing also assumes the tested specimens are representative of the entire batch which is not always true in the case of CI-CNT production. Finding a non-destructive way to test for stiffness of this material reduces the number of parts that have to be made and increases confidence in the integrity of device being used. It also simplifies testing of complex parts. The stiffness of CI-CNT beams is related to the molecular structure of the carbon material infiltrated between the carbon nanotubes (CNTs), how it interacts with the CNTs, and how much of it there is. The amount of material can be approximated with the density of the beam, and both the type of material and its interaction with the CNTs can be approximated through analysis of the Raman spectra taken at the surface. A combination of these two observations can be related to the effective material stiffness. The relationship can be fitted with a power function, with a variance of 1.41 GPa, which is about 11% of the maximum stiffness of the samples tested.

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“…12 It has been reported that the addition of trace amounts of CNTs is enough to dramatically improve the mechanical and electrical properties of the elastomeric matrix without sacrificing its inherent flexibility. 5,[13][14][15][16] CNTs can be described as hollow graphitic sheets rolled into cylindrical shape, [17][18][19][20] where the carbon atoms are sp2 hybridized. 10,21 Their diameter is usually smaller than 240 nm 22,23 whereas their length is smaller than 550 μm.…”

Section: Introductionmentioning

confidence: 99%

“…CNTs can be described as hollow graphitic sheets rolled into cylindrical shape, 17–20 where the carbon atoms are sp2 hybridized 10,21 . Their diameter is usually smaller than 240 nm 22,23 whereas their length is smaller than 550 μm 24 .…”

Section: Introductionmentioning

confidence: 99%

Electrical properties of elastomer‐based composites reinforced with carbon nanotubes—A review

Aït Hocine,

Miranda,

Nauman

et al. 2024

Polymers for Advanced Techs

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Even though carbon nanotubes offer an excellent solution for the design of strain sensors, their widespread commercial utilization has been hampered by the unavailability of design rules, inconsistencies in their macro‐scale properties, and lack of understanding of the effects of various parameters on their characteristics. Nevertheless, many researches have been carried out to characterize elastomeric nanocomposites filled with carbon nanotubes in order to optimize their properties such as electrical conductivity and strain sensitivity range. This article reviews the effect of different parameters on the electrical properties of such nanocomposites, followed by the analysis of performances of elastomer strain sensors.

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Characterization of Carbon Nanomaterials by Raman Spectroscopy

Cited by 8 publications

References 77 publications

Subsurface cleavage of diamond after high-speed three-dimensional dynamic friction polishing

Subsurface cleavage of diamond after high-speed three-dimensional dynamic friction polishing

Using non-destructive testing to predict bending modulus of carbon infiltrated-carbon nanotubes

Electrical properties of elastomer‐based composites reinforced with carbon nanotubes—A review

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