Carbyne ? the third allotropic form of carbon

Kudryavtsev, Yu. P.; Evsyukov, S. E.; Гусева, М. Б.; Babaev, V. G.; Khvostov, V. V.

doi:10.1007/bf00698417

Cited by 47 publications

(15 citation statements)

References 16 publications

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“…The temperature was measured with a chromel±alumel thermocouple. We used fullerite powder produced at the Russian Scientific Center ªKurchatcov Instituteº, with the C 60 content at least 99.9% and 50 to 100 mm crystalline grains, and amorphous cumulene carbyne synthesized by low-temperature dehydrohalogenization of polyvinylidene fluoride (carbyne 1 for futher references) or chloride (carbyne 2) [12,13] at A. N. Nesmeyanov Institute of Elemental-Organic Synthesis, Russian Academy of Sciences. Special attention was devoted to the monitoring of impurities in carbynes.…”

Section: Methodsmentioning

confidence: 99%

Non-Traditional Carbon Semiconductors Prepared from Fullerite C60 and Carbyne under High Pressure

Lyapin

Бражкин

Lyapin

et al. 1999

phys. stat. sol. (b)

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Section: Methodsmentioning

confidence: 99%

Non-Traditional Carbon Semiconductors Prepared from Fullerite C60 and Carbyne under High Pressure

Lyapin

Бражкин

Lyapin

et al. 1999

phys. stat. sol. (b)

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“…Thermodynamics of adsorption of H 2 molecules on the Ca atom was also investigated using equilibrium grand partition function. Nano Letters LETTER intercalation of metal ions 13 and the stability of carbon chains decorated with various metal atoms was theoretically investigated. 28 This motivates us to investigate the stability of such carbon chains decorated with the Ca atoms (CaÀcarbyne), and especially their ability to store hydrogen.…”

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confidence: 99%

Calcium-Decorated Carbyne Networks as Hydrogen Storage Media

et al. 2011

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Among the carbon allotropes, carbyne chains appear outstandingly accessible for sorption and very light. Hydrogen adsorption on calcium-decorated carbyne chain was studied using ab initio density functional calculations. The estimation of surface area of carbyne gives the value four times larger than that of graphene, which makes carbyne attractive as a storage scaffold medium. Furthermore, calculations show that a Ca-decorated carbyne can adsorb up to 6 H(2) molecules per Ca atom with a binding energy of ∼0.2 eV, desirable for reversible storage, and the hydrogen storage capacity can exceed ∼8 wt %. Unlike recently reported transition metal-decorated carbon nanostructures, which suffer from the metal clustering diminishing the storage capacity, the clustering of Ca atoms on carbyne is energetically unfavorable. Thermodynamics of adsorption of H(2) molecules on the Ca atom was also investigated using equilibrium grand partition function.

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“…2d. During the separation, linear chains of sp-hybridized carbon -the carbynes [35], were formed between the surfaces, Fig. 2e,f.…”

Section: B Stress Dependent Adhesionmentioning

confidence: 99%

Collision of nanoparticles of covalently bound atoms. Impact of stress-dependent adhesion

Tsukanov,

Brilliantov

2021

Preprint

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The impact of nanoparticles (NPs) comprised of atoms with covalent bonding is investigated numerically and theoretically. We use recent models of covalent bonding of carbon atoms and elaborate a numerical model of amorphous carbon (a-C) NPs, which may be applied for modelling soot particles. We compute the elastic moduli of the a-C material which agree well with the available data. We reveal an interesting novel phenomenon -stress dependent adhesion, which refers to stress-enhanced formation of covalent bonds between contacting surfaces. We observe that the effective adhesion coefficient linearly depends on the maximal stress between the surfaces and explain this dependence. We compute the normal restitution coefficient for colliding NPs and explore the dependence of the critical velocity, demarcating bouncing and aggregative collisions, on the NP radius. Using the obtained elastic and stress-dependent adhesive coefficients we develop a theory for the critical velocity. The predictions of the theory agree very well with the simulation results.

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Carbyne ? the third allotropic form of carbon

Cited by 47 publications

References 16 publications

Non-Traditional Carbon Semiconductors Prepared from Fullerite C60 and Carbyne under High Pressure

Non-Traditional Carbon Semiconductors Prepared from Fullerite C60 and Carbyne under High Pressure

Calcium-Decorated Carbyne Networks as Hydrogen Storage Media

Collision of nanoparticles of covalently bound atoms. Impact of stress-dependent adhesion

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