Single-Walled Carbon Nanotube is the highest researched structure by the scientists and the smallest of all carbon nano structures. This structure has the most variability in electrical conductivity. The component assay indicates CNT: 98%, amorphous content: trace and ash content less than 1%, The average dia.: 1.3 nm, length 0.8 micro.m, BET surface area 600 – 800 m2/g, bulk density: 0.30g/cm3, total metal content 5000ppm and purity 90% when made with CVD method. It is possible to find the right chiral angle so that SWCNTcan be made to meet semi-conductor applications.
Double Walled Carbon Nanotube is the smallest of the multi-walled family. This is ideal for conductivity applications that are sensitive to diameter such as thin films which retain certain optical properties. The assay components are same as SWCNT and the approximate dimensions are: dia 2.33 nm, length 3 micro.m, BET surface area 450 m2/g and total metal content 5000ppm.

Carbon Nano Fiber is the largest and most economical structure which has been exploited to a minimum level in the nano structure family. The assay components are same as that of SWCNT and the approximate dimensions are: dia 170 nm, length 5.5 micro.m, BET surface area 150 m2/g and total metal content 5000ppm.
Microelectronic-grade carbon nanotube coating is obtained after the removal of metallic and carbonaceous contaminants and can be applied by spin, spray, micro-dispensing or ink-jet printing methods. This product is non-volatile, highly scalable, fast memory for stand-alone, embedded, or application specific designs for logic Bio-sensor, Chemical detection sensor and IR detector applications and also for Wide verities of applications in the area of Display, printing circuit etc.
The development of the Chemical Vapor Deposition (CVD) method used to produce carbon nanotubes has enabled the synthesis of high quality carbon nanotubes that grow in specified locations and with greater purity. Carbon nanotubes can be grown by CVD directly onto substrates or onto bulk-supported catalyst. The process typically consists of flowing a carbon feedstock, over a catalyst-covered substrate at elevated temperature; the feedstock molecules decompose upon the catalyst, releasing their carbon to form nanotubes.