Measurement of the inherent strength of carbon atomic chains

Atomic mechanisms governing upper limit on the strength of nanosized crystals

“…Experimental evidence on strength of this object is obtained just recently [3,36]. It was ascertained that carbyne strength is more than 2 times greater than strength of graphene.…”

“…It proved to be equal 130 GPa [2]. However, as experimental findings have exhibited, strength of 1D-crystal of carbon (carbyne) is more than two times higher [3]. All this requires to create a theory of NSC strength that would take into account both peculiarities of their structure and their dimensionality.…”

Atomic structure and mechanical properties of carbyne

“…The results of ab-initio calculations are still forming the main source of information about the mechanical properties of carbyne. Only recently the experimental results of tests to determine the tensile strength of carbon atomic chains using a highfield method have been published 17,18 , and extremely high level of strength of these chains, which exceeds 270 GPa was found 18 . Moreover, their high-field-evaporation stability was ascertained.…”

Mechanical properties of carbyne: experiment and simulations

“…During this high-field forming, self-standing carbyne chains of different lengths with densities in the range of 10 15 to 10 16 m −2 are produced at the surface of the carbon specimen as a result of high-field unraveling [21,22]. Details of the experimental procedure, including in situ preparation of carbyne chains anchored on top of a parabolic carbon tip, are described in details elsewhere [19,21,23]. During the high-field treatment, initially sharp carbon tips were blunted up to radii of 200 to 1,000 nm.…”