Tribological properties of vertically aligned carbon nanotube arrays

Schaber, Clemens F.; Heinlein, Thorsten; Keeley, Gareth P.; Schneider, Jörg J.; Gorb, Stanislav N.

doi:10.1016/j.carbon.2015.07.007

Cited by 30 publications

(28 citation statements)

References 45 publications

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“…36 The MWCNT within the arrays are double to six-walled and their diameter is in the range between 6-20 nm. 37 The respective inter tube distance is between 10 and 20 nm maximally. 41,42 The growth on the silicon surface led to a secure anchoring of the CNT and assured that they were not detached and washed out of the flow chamber during the entire experiment.…”

Section: Bacterial Biofilm Formation On Mwcntmentioning

confidence: 99%

Vertically aligned multi walled carbon nanotubes prevent biofilm formation of medically relevant bacteria

et al. 2016

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Section: Bacterial Biofilm Formation On Mwcntmentioning

confidence: 99%

Vertically aligned multi walled carbon nanotubes prevent biofilm formation of medically relevant bacteria

et al. 2016

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“…Joshi et al [37,42,43] experimentally observed the role of water and hydrogen in terms of their influence on CNT growth, and point out that hydrogen controls the cracking of the carbon precursor ethylene, thereby controlling the purity as well as the number of walls of the CNTs grown. Schaber et al [44,45] investigated the tribological properties of densely-packed VACNTs and the morphology effect on the frictional coefficients. Chen et al [46] systematically tested the effect of packing density and surface roughness of VACNTs on their biomimetic frictional adhesion.…”

Section: Introductionmentioning

confidence: 99%

Effect of Hydrogen Concentration on the Growth of Carbon Nanotube Arrays for Gecko-Inspired Adhesive Applications

Duan

et al. 2017

Coatings

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Vertically-aligned carbon nanotubes (VACNTs) have extraordinary structural and mechanical properties, and have been considered as potential candidates for creating dry adhesives inspired by adhesive structures in nature. Catalytic chemical vapor deposition is widely used to grow VACNTs; however, the influential mechanism of VACNT preparation parameters (such as H 2 concentration) on its adhesion property is not clear, making accurate control over the structure of VACNTs adhesive an ongoing challenge. In this article, we use electron beam-deposited SiO 2 /Al 2 O 3 as a support layer, Fe as catalyst, and C 2 H 4 /H 2 gas mixtures as a feed gas to prepare VACNTs, while varying the ratio of the reducing atmosphere (H 2 ) from 0% to 35%. VACNTs synthesized at a 15% H 2 concentration (5 mm × 5 mm in size) can support a maximal weight of 856 g, which indicates a macroscopic shear adhesive strength of 34 N/cm 2 . We propose a hydrogen-concentration-dependent model for the shear adhesive performance of VACNTs. By adjusting the amount of hydrogen present during the reaction, the morphology and quality of the prepared VACNTs can be precisely controlled, which significantly influences its shear adhesive performance. These results are advantageous for the application of carbon nanotubes as dry adhesives.

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“…8b). Nevertheless, we have not seen much amorphous carbon which might be the short carbon nanotubes are very stiff (Schaber et al 2015) that can tolerate loads at such scale. Further confirmation of the results can be achieved the Raman spectra.…”

Section: Discussionmentioning

confidence: 76%

“…As lubricious materials, carbon nanotubes, discovered by Iijima (1991), is a potentially lubricious material. So far, tribological applications of CNTs include lubrication film, additive and filler (Loyd et al 2011;Cui et al 2013a;Schaber et al 2015;Chen et al 2005). Kis et al (2006) reported that multiwall carbon nanotubes shown ultralow friction between nanotube shells.…”

Section: Introductionmentioning

confidence: 99%

Assembling of carbon nanotubes film responding to significant reduction wear and friction on steel surface

Zhang

Xue

et al. 2017

Appl Nanosci

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Friction properties of carbon nanotubes have been widely studied and reported, however, the friction properties of carbon nanotubes related on state of itself. It is showing superlubricity under nanoscale, but indicates high shear adhesion as aligned carbon nanotube film. However, friction properties under high load (which is commonly in industry) of carbon nanotube films are seldom reported. In this paper, carbon nanotube films, via mechanical rubbing method, were obtained and its tribology properties were investigated at high load of 5 to 15 N. Though different couple pairs were employed, the friction coefficients of carbon nanotube films are nearly the same. Compared with bare stainless steel, friction coefficients and wear rates under carbon nanotube films lubrication reduced to, at least, 1/5 and 1/(4.3-14.5), respectively. Friction test as well as structure study were carried out to reveal the mechanism of the significant reduction wear and friction on steel surface. One can conclude that sliding and densifying of carbon nanotubes at sliding interface contribute to the sufficient decrease of friction coefficients and wear rates.

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Tribological properties of vertically aligned carbon nanotube arrays

Cited by 30 publications

References 45 publications

Vertically aligned multi walled carbon nanotubes prevent biofilm formation of medically relevant bacteria

Vertically aligned multi walled carbon nanotubes prevent biofilm formation of medically relevant bacteria

Effect of Hydrogen Concentration on the Growth of Carbon Nanotube Arrays for Gecko-Inspired Adhesive Applications

Assembling of carbon nanotubes film responding to significant reduction wear and friction on steel surface

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