Nanomechanics of individual aerographite tetrapods

Meija, Raimonds; Signetti, Stefano; Schuchardt, Arnim; Meurisch, Kerstin; Smazna, Daria; Mecklenburg, Matthias; Schulte, Karl; Erts, Donāts; Lupan, Oleg; Fiedler, Bodo; Mishra, Yogendra Kumar; Adelung, Rainer; Pugno, Nicola

doi:10.1038/ncomms14982

Cited by 34 publications

(11 citation statements)

References 49 publications

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“…In Fig. 3f , stress–strain curves for 3D CNTT structures having a CNT concentration of 0.10 g cm −3 and 0.12 g cm −3 are depicted together with results of numerical simulation 49 . The corresponding conductivity curves for the two samples are presented in Fig.…”

Section: Resultsmentioning

confidence: 99%

Hierarchical self-entangled carbon nanotube tube networks

et al. 2017

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Three-dimensional (3D) assemblies based on carbon nanomaterials still lag behind their individual one-dimensional building blocks in terms of mechanical and electrical properties. Here we demonstrate a simple strategy for the fabrication of an open porous 3D self-organized double-hierarchical carbon nanotube tube structure with properties advantageous to those existing so far. Even though no additional crosslinking exists between the individual nanotubes, a high reinforcement effect in compression and tensile characteristics is achieved by the formation of self-entangled carbon nanotube (CNT) networks in all three dimensions, employing the CNTs in their high tensile properties. Additionally, the tubular structure causes a self-enhancing effect in conductivity when employed in a 3D stretchable conductor, together with a high conductivity at low CNT concentrations. This strategy allows for an easy combination of different kinds of low-dimensional nanomaterials in a tube-shaped 3D structure, enabling the fabrication of multifunctional inorganic-carbon-polymer hybrid 3D materials.

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Section: Resultsmentioning

confidence: 99%

Hierarchical self-entangled carbon nanotube tube networks

et al. 2017

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“…The samples have a square-shaped surface with a lateral size L = 2 cm, a thickness d = 0.2 cm, and a mass m = 5 − 15 mg. A representative sample is reported in Figure 1a. From the scanning electron microscopy (SEM) micrograph in Figure 1b, a random network made of micrometer-sized carbon tetrapods [23][24][25] constituting the aerogel surface (Figure 1b, inset) can be observed. This particular shape is due to the precursor ZnO template employed during the material synthesis.…”

Section: Resultsmentioning

confidence: 99%

Wetting Properties of Graphene Aerogels

Nicola

Viola

Tenuzzo

et al. 2020

Sci Rep

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Graphene hydrophobic coatings paved the way towards a new generation of optoelectronic and fluidic devices. Nevertheless, such hydrophobic thin films rely only on graphene non-polar surface, rather than taking advantage of its surface roughness. Furthermore, graphene is typically not self-standing. Differently, carbon aerogels have high porosity, large effective surface area due to their surface roughness, and very low mass density, which make them a promising candidate as a super-hydrophobic material for novel technological applications. However, despite a few works reporting the general super-hydrophobic and lipophilic behavior of the carbon aerogels, a detailed characterization of their wetting properties is still missing, to date. Here, the wetting properties of graphene aerogels are demonstrated in detail. Without any chemical functionalization or patterning of their surface, the samples exhibit a super-lipophilic state and a stationary super-hydrophobic state with a contact angle up to 150 ± 15° and low contact angle hysteresis ≈ 15°, owing to the fakir effect. In addition, the adhesion force of the graphene aerogels in contact with the water droplets and their surface tension are evaluated. For instance, the unique wettability and enhanced liquid absorption of the graphene aerogels can be exploited for reducing contamination from oil spills and chemical leakage accidents.

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“…Recently, the influence of the sintering time and temperature [9, 10] on the morphology and feature of the NPs were deeply investigated. Moreover, it is found that the leaching processes [11, 12] as well as capping agents [4, 7] pave the way for the tuning size. The obtained results have demonstrated that the tailoring size and shape can improve the magnetic characteristics, governed by Snoek's law [7, 13, 14].…”

Section: Introductionmentioning

confidence: 99%