single-walled nanotubes (SWNT) have a diameter of close to 1 nanometer, with a tube length that can be many millions of times longer. The structure of a SWNT can be conceptualized by wrapping a one-atom-thick layer of graphite called graphene into a seamless cylinder.
Single-walled nanotubes are an important variety of carbon nanotube because they exhibit electric properties that are not shared by the multi-walled carbon nanotube (MWNT) variants. In particular, their band gap can vary from zero to about 2 eV and their electrical conductivity can show metallic or semiconducting behavior, whereas MWNTs are zero-gap metals. Single-walled nanotubes are the most likely candidate for miniaturizing electronics beyond the micro electromechanical scale currently used in electronics. The most basic building block of these systems is the electric wire, and SWNTs can be excellent conductors.

 

 

Products

Property Purity OD Length SSA EC Tap Density -OH Content -COOH Content
Unit       Wt%            nm    Micron  m2/g  s/cm       g/cm3              Wt%              Wt%
Method TGA & TEM HRTEM,Raman TEM BET XPS & Titration XPS & Titration

Single-walled carbon nanotube

SWCNT

>90

              1-2

10-30

>380

>100

0.14

-

-

Hydroxy Single-walled carbon nanotube

SWCNT -OH

>90

1-2

10-30

>380

>100

0.14

3.96

-

Carboxy Single-walled carbon nanotube

SWCNT -COOH

>90

1-2

10-30

>380

>100

0.14

-

2.73