Predicting mechanical properties of carbon nanosprings based on molecular mechanics simulation

Mechanics of Helical Carbon Nanomaterials

“…Coville [16]. Reproduced with permission of Elsevier [17] Helix-shaped graphite nanotube [18] Coil-shaped carbon nanotubule [19] Helically coiled cage of graphitic carbon [20] Helically coiled carbon nanotube [3,[21][22][23] Helical carbon nanotube [24][25][26] Nanotube coil [27] Carbon nanocoil [1,28] Coiled carbon nanotube [29] Carbon nanosprings [30] Helical carbon nano-fiber (HN-Fiber) Coiled carbon nanotube [14] Helically coiled carbon nanofiber [31] Helically coiled carbon nanowire [32] Catalytic decomposition of acetylene (C 2 H 2 ) was employed to fabricate 10-walled HN-Tubes having 30 nm in coil pitch and 18 nm in fiber diameter. The structural analysis based on electron diffraction method indicated that these HN-Tubes are multiwalled, hollow, and polygonized such that they consist of short straight segments.…”

Fracture and defect evolution in carbon nanocoil – A molecular dynamics study

“…Moreover, based on the measurement data obtained from the force modulation microscopy (FMM), Volodin et al [21][22][23][24][25][26] estimated that the Young modulus of the coiled multi-walled nanotube (MWNT) can reach a value of 0.7 TPa. Meanwhile, the mechanical properties of CNCs have also been investigated intensively by molecular dynamics (MD) simulations [27][28][29][30][31][32][33].…”

Nature-inspired entwined coiled carbon mechanical metamaterials: molecular dynamics simulations

“…In mechanics, a large body of both pioneering experimental and theoretical works have been conducted to reveal the mechanical characteristics of single-helical carbon coils (SHCNCs). 17,[19][20][21][22][23][24][25][26][27][28][29][30][31] It has been reported that tensile mechanical properties of SHCNCs are strongly relied on the geometrical parameters. [30][31][32][33] Experimental measurements via atomic force microscopy (AFM) and manipulator-equipped scan electron microscopy (SEM) techniques demonstrated that depending on the coil radius and coil pitch, Young's modulus of SHCNCs varies from 0.04 to 0.9 TPa, 17,19,21 and strain-induced buckling instability was identified in multi-walled SHCNCs subjected to compression.…”

“…[30][31][32][33] Experimental measurements via atomic force microscopy (AFM) and manipulator-equipped scan electron microscopy (SEM) techniques demonstrated that depending on the coil radius and coil pitch, Young's modulus of SHCNCs varies from 0.04 to 0.9 TPa, 17,19,21 and strain-induced buckling instability was identified in multi-walled SHCNCs subjected to compression. 20 Theoretically, Young's modulus of sparse SHCNCs falls in the range from around 0.003 to 0.02 TPa, 23,25,[28][29][30][31]34 also relying on the dimensionalities. Striking discrepancies in tensile stiffnesses between experimental and theoretical data mainly attribute to the significantly different dimensionalities in SHCNC samples.…”