Quick Facts

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.

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		(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		~ 100 GPa		[18]