Below is a compilation of research results from scientists all over the world. All values are for Single Wall Carbon Nanotubes (SWNT's) unless otherwise stated. Click on the group heading for each section for a more detailed description, images, and more.
Equilibrium Structure | ||||
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Average Diameter of SWNT's | 1.2-1.4 nm | ^{[1]} | ||
Distance from opposite Carbon Atoms (Line 1) | 2.83 Å | ^{[1]} | ||
Analogous Carbon Atom Separation (Line 2) | 2.456 Å | ^{[1]} | ||
Parallel Carbon Bond Separation (Line 3) | 2.45 Å | ^{[1]} | ||
Carbon Bond Length (Line 4) | 1.42 Å | ^{[1,23]} | ||
C - C Tight Bonding Overlap Energy | ~ 2.5 eV | ^{[23,24]} | ||
Group Symmetry (10, 10) | C_{5V} | ^{[2]} | ||
Lattice: Bundles of Ropes of Nanotubes | Triangular Lattice (2D) | ^{[2]} | ||
Lattice Constant | 17 Å | ^{[2]} | ||
Lattice Parameter: | ||||
(10, 10) Armchair | 16.78 Å | ^{[3]} | ||
(17, 0) Zigzag | 16.52 Å | ^{[3]} | ||
(12, 6) Chiral | 16.52 Å | ^{[3]} | ||
Density: | ||||
(10, 10) Armchair | 1.33 g/cm^{3} | ^{[3]} | ||
(17, 0) Zigzag | 1.34 g/cm^{3} | ^{[3]} | ||
(12, 6) Chiral | 1.40 g/cm^{3} | ^{[3]} | ||
Interlayer Spacing: | ||||
(n, n) Armchair | 3.38 Å | ^{[3]} | ||
(n, 0) Zigzag | 3.41 Å | ^{[3]} | ||
(2n, n) Chiral | 3.39 Å | ^{[3]} | ||
. | ||||
Optical Properties | ||||
Fundamental Gap: | ||||
For (n, m); n-m is divisible by 3 [Metallic] | 0 eV | ^{[13,19]} | ||
For (n, m); n-m is not divisible by 3 [Semi-Conducting] | ~ 0.5 eV | ^{[13,19,23]} | ||
. | ||||
Electrical Transport | ||||
Conductance Quantization | n x (12.9 k)^{-1} | ^{[4,5,19]} | ||
Resistivity | 10^{-4} -cm | ^{[2]} | ||
Maximum Current Density | 10^{13} A/m^{2} | ^{[5,12]} | ||
. | ||||
Thermal Transport | ||||
Thermal Conductivity | ~ 2000 W/m/K | ^{[6,15,16]} | ||
Phonon Mean Free Path | ~ 100 nm | ^{[15]} | ||
Relaxation Time | ~ 10^{-11} s | ^{[15]} | ||
. | ||||
Elastic Behavior | ||||
Young's Modulus (SWNT) | ~ 1 TPa | ^{[3,7,8,9,12,13] } | ||
Young's Modulus (MWNT) | 1.28 TPa | ^{[8]} | ||
Maximum Tensile Strength | ~30 GPa | ^{[18]} |