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.


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Equilibrium Structure

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)
C5V
[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/cm3
[3]
(17, 0) Zigzag
1.34 g/cm3
[3]
(12, 6) Chiral
1.40 g/cm3
[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
1013 A/m2
[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]

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