Carbon Nanotube actuators - The main issue in developing devices based on nano scale actuation mechanism is the transfer of stress induced at the level of the single Carbon Nanotube (CNT) to the macroscopic domain. A possible approach to this issue is to. The transfer of stress induced at the level of the single CNT to the macroscopic domain can be achieved by a novel approach to the problem. Instead of simply using van der Waals interaction between CNTs or merely incorporating in a polymeric matrix, the idea is to link CNTs via chemical bonds in order to create a copolymer with single nanotubes as repeating unit. To this end one possible route is to create two different kinds of CNTs, one functionalized with carboxylic group and the other amino substitutes; these moieties can react without any addition of catalyst as in the synthesis of polyamides (i.e. Nylon 6,6). An easiest route to link CNTs via chemical bond is to use a linker molecule, i.e. an aromatic diamine, that could react with acyl chloride (-COCl) modified CNTs as shown below.
Polymers, carbon based materials, nanocomposites