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Cited by 451

The DOI matches its Crossref record; 45 of the 45 references it cites were found in a registry or an index.

Carbyne from First Principles: Chain of C Atoms, a Nanorod or a Nanorope

Open access
Liu, Mingjie, Artyukhov, Vasilii I., Lee, Hoonkyung, Xu, Fangbo, Yakobson, Boris I.·2013·ACS Nano
DOI 10.1021/nn404177r
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Abstract

We report an extensive study of the properties of carbyne using first-principles calculations. We investigate carbyne's mechanical response to tension, bending, and torsion deformations. Under tension, carbyne is about twice as stiff as the stiffest known materials and has an unrivaled specific strength of up to 7.5 × 10(7) N·m/kg, requiring a force of ∼10 nN to break a single atomic chain. Carbyne has a fairly large room-temperature persistence length of about 14 nm. Surprisingly, the torsional stiffness of carbyne can be zero but can be "switched on" by appropriate functional groups at the ends. Further, under appropriate termination, carbyne can be switched into a magnetic semiconductor state by mechanical twisting. We reconstruct the equivalent continuum elasticity representation, providing the full set of elastic moduli for carbyne, showing its extreme mechanical performance (e.g., a nominal Young's modulus of 32.7 TPa with an effective mechanical thickness of 0.772 Å). We also find an interesting coupling between strain and band gap of carbyne, which is strongly increased under tension, from 2.6 to 4.7 eV under a 10% strain. Finally, we study the performance of carbyne as a nanoscale electrical cable and estimate its chemical stability against self-aggregation, finding an activation barrier of 0.6 eV for the carbyne-carbyne cross-linking reaction and an equilibrium cross-link density for two parallel carbyne chains of 1 cross-link per 17 C atoms (2.2 nm).

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Metadata

Authors
Liu, M., Artyukhov, V. I., Lee, H., Xu, F., & Yakobson, B. I.
Venue
ACS Nano
Publisher
American Chemical Society (ACS)
Published
2013-10-10
Volume
7
Issue
11
Pages
10075-10082
ISSN
  • 1936-0851 (ISSN-L)
  • 1936-086X
DOI
10.1021/nn404177r
OpenAlex
W2086962411
Cited by
451
References
45
FWCI
14.21
Type
journal article
Language
en
Open access
green

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