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what's carbon nanotubes (CNTs)? where's industrial CNTs(SWNTs,DWNTs,MWNTs) manufacturers and suppliers? how to buy cheap short CNTs(OH, COOH)?

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what is carbon nanotube(CNTs)?

the carbon nanotube is a tube-shaped material, made of carbon, that has a diameter measuring on the nanometer scale. A nanometer is one one-billionth of a meter. carbon nanotubes (CNTs) are allotropes of carbon with a cylindrical nanostructure. Carbon nanotubes are molecular-scale tubes of graphitic carbon with outstanding properties. They are among the stiffest and strongest fibres known, and have remarkable electronic properties and many other unique characteristics.

However, in order to construct a useful device we would need to arrange many thousands of nanotubes in a defined pattern, and we do not yet have the degree of control necessary to achieve this. There are several areas of technology where carbon nanotubes are already being used. These include flat-panel displays, scanning probe microscopes and sensing devices. The unique properties of carbon nanotubes will undoubtedly lead to many more applications.

carbon nanotube(CNTs) applications

The strength and flexibility of carbon nanotubes make them potentially useful in a wide variety of applications in nanotechnology, electronics, optics and other fields of materials science. They exhibit extraordinary strength and unique electrical properties, and are efficient conductors of heat. Inorganic nanotubes have also been synthesized.

carbon nanotubes (CNTs), SWNTs, Short CNTs, MWNTs industrial CNTs

carbon nanotubes (CNTs), SWNTs, Short CNTs, MWNTs industrial CNTs
CNTs types diameter length purity amorphous carbon ash SSA
SWCNTs1 <2nm 5-15 μm 95%CNTs (60%SWNTs) <=5% <=2 wt% 350-400m2/g
SWCNTs2 <2nm 5-15 μm 95%CNTs(90%SWNTs) <=5% <=2 wt% 500-700m2/g
DWCNTs <5nm 5-15 μm 95%CNTs(60%DWNTs) <=5% <=2 wt% 350-400 m2/g
MWCNTs <10nm 5-15 μm <=95% <=5% <=0.2 wt % 200-220 m2/g
directional CNTs 10-20nm 5-15 μm 7% <=3% <=0.2 wt % 160-200 m2/g
MWCNTs 10-20nm 5-15 μm =>97% <=3% <=0.2 wt % 90-120 m2/g
MWCNTs 10-20nm 1-2 μm =>97% <=3% <=0.2 wt % 100-120 m2/g
MWCNTs 10-30nm 5-15 μm =>97% <=3% <=0.2 wt % 90-120 m2/g
MWCNTs 10-30nm 1-2 μm =>97% <=3% <=0.2 wt % 00-120 m2/g
MWCNTs 20-40nm 5-15 μm =>97% <=3% <=0.2 wt % 90-120 m2/g
MWCNTs 20-40nm 1-2 μm =>97% <=3% <=0.2 wt % 100-120 m2/g
MWCNTs 40-60nm 5-15 μm =>97% <=3% 0.2 wt % 40-70m2/g
MWCNTs 40-60nm 1-2 μm =>97% <=3% <=0.2 wt % 130-160 m2/g
MWNTs 60-100nm 5-15 μm =>97% <=3% <=0.2 wt % 40-70 m2/g
MWNTs 60-100nm 1-2 μm =>97% <=3% <=0.2 wt % 130-160 m2/g
Total 14 carbon nanotubes (CNTs), SWNTs, Short CNTs, MWNTs industrial CNTs
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Properties of carbon nanotubes (CNTs)

The strength of the sp2 carbon-carbon bonds gives carbon nanotubes amazing mechanical properties. The stiffness of a material is measured in terms of its Young's modulus, the rate of change of stress with applied strain. The Young's modulus of the best nanotubes can be as high as 1000 GPa which is approximately 5x higher than steel. The tensile strength, or breaking strain of nanotubes can be up to 63 GPa, around 50x higher than steel. These properties, coupled with the lightness of carbon nanotubes, gives them great potential in applications such as aerospace.

The electronic properties of carbon nanotubes are also extraordinary. Especially notable is the fact that nanotubes can be metallic or semiconducting depending on their structure. Thus, some nanotubes have conductivities higher than that of copper, while others behave more like silicon. There is great interest in the possibility of constructing nanoscale electronic devices from nanotubes, and some progress is being made in this area.

Manufacturer and supplier of carbon nanotube(CNTs)

we are Manufacturer and supplier of carbon nanotube(CNTs). including SWNTs(single-walled carbon nanotubes DWNTs(double-walled carbon nanotubes),MWNTs(multi-walled carbon nanotubes),CNTs(-OH, COOH)wtc.

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