What is a single walled carbon nanotube?
Single-wall carbon nanotubes (SWNTs) are a special class of carbon materials known as one-dimensional materials. They consist of sheets of graphene, rolled up to form hollow tubes with walls one atom thick.
What are two types of carbon nanotubes?
Types of Carbon Nanotubes
- Single-walled Carbon nanotubes.
- Multi-walled Carbon nanotubes.
What is the diameter of single walled carbon nanotubes?
about 1 nm
Single-walled carbon nanotubes (SWCNTs) are cylindrical graphitic tubes with diameters of about 1 nm. They exhibit metallic or semiconducting characteristics depending on how the graphitic sheets are rolled (chirality).
What are three types of SWNTs?
SWNT can be classified into three types; armchair, zigzag and chirality.
What are different types of carbon nanotubes?
In addition to the two different basic structures, there are three different possible types of carbon nanotubes. These three types of CNTs are armchair carbon nanotubes, zigzag carbon nanotubes, and chiral carbon nanotubes.
How conductive are carbon nanotubes?
Recent measurements of the conductivity of a single CNTs confirmed conductivities of about 3000 W/m K for multi-walled carbon nanotubes (MWCNTs) [104] and above 2000 W/m K for single-walled carbon nanotubes (SWCNTs) [105].
How single wall carbon nanotube is classified on the basis of chiral vector?
A vector connecting the centers of the two hexagons is called the chiral vector, and it determines the structure of a single-walled carbon nanotube. A chiral vector C can be specified by a chiral index (n,m) using basis vectors a1 and a2 of a graphene sheet.
What is chiral carbon nanotubes?
Chiral CNT are characterized by (n, m) indices with n ≠ m: in chemical terms, enantiomeric chiral nanotubes have swapped indices (n, m) and (m, n), and can interact with chiral molecules such as the oligopeptides forming in principle complexes with an unlike stability.