The simplest way to do this is to disperse the nanotubes ultrasonically (say 20% of 750kW total power for a typical sonic horn) for enough time to efficiently disperse the nanotubes. Typical dispersion media can include chloroform, ethanol or water combined with additives (e.g. SDS or similar) and then pass the dispersion though a suction filter with a small pore removable filter. This will create a mesh of randomly orientated but meshed nanotubes.

inspite of sonication , u can functionlaized the nanotubes and disperse in any solvant like DMF, ethanol or even in water and then filtered using filter paper like PTFE...

After disperions, you may use ultracentrifugation cycles to separate CNTs. Another method can be separation with segregation. If you use a depletion agent you can induce separation and/or precipitation of carbon nanotubes out of your disperions controlling the extent of depletion interactions. You can check this paper:

Article Phase Behavior of DNA-Based Dispersions containing Carbon Na...

What do you mean by "a mesh out of carbon nanotubes"? Are you interested in an array of aligned nanotubes grown on previously formed grid of catalyst layer?

Hi Kithsiri, you can use vacuum filtration techniques. You can find methods for this by searching for the term "buckypaper" in the literature.

thanks every body for giving the information. Yes, Dr Alexander. I need to make a mesh by randomly oriented or array of aligned nanotubes

Filter it on a 0.45 um pore size teflon or nylon (depending on the solvent u use). after filtering u will be able to peel it off from the filterpaper easily. As I remember: 10 mg CNt sonic in 10 ml of dmf and filter on the ~1 inch diamter filter paper. I am not sure. good luck!

thank you Andras...

able to collect the CNT mesh in manufacturing process. As a example in Chemical vapour deposition (CVD) technique the CNT were synthesizing on the Electrode but by the way its processed settled as a mesh. dur to interconnections of carbon atoms.

Or else could be collect the CNT and Highly dispersed using sonicator (probe sonicater) in ethanol medium and can made a mesh with filter them through the ceramic filter with suction facilities. CNT were randomly oriented as a mesh. After all the mesh can be coated with some chemicals such as a chitosan or PEG for give a some strength for the mesh. And also can be collect the CNT mesh to the another mesh made by Aluminium Oxide and could be treated with HCl. The Al1O3 mesh was dissolved in aqueous HCl but CNT mesh remain as is it!

I recently read about a new process for manufacturing nonwovens from carbon nanotubes by first dispersing in water followed by filtering. Unfortunately, I cannot locate it.

Thank you yasun, and Titus.