Hello everybody,I am a research scholar working in the area of molecular dynamics simulation of polymer nanocomposites.While going through a paper entitled "Dynamic response and simulations of nanoparticle-enhanced composites" Published in "Composites Science andTechnology 69 (2009)", I got stucked at the stage of construction of polymer-MWCNT composite.Auther have mentioned here that firstly a unit cell composed of only fragments of nylon 6,6 have been constructed and energy minimized using amorphous cell.Then, an atomistic model of only MWCNT is constructed and energy minimized.after that both energy minimized atomistic models have been combined together to represent a unit cell of nylon-MWNt composite.i want to know that, is there any procedure in material studio by which a CNT can be inserted in an already existing unit cell of polymermolecules only, and if it is then how to select and delete the polymer molecules coming inside the CNT.I use packing option available in amorphous cell module to construct unit cell composed of CNT reinforced polymers,but it requires periodic cellcontaining CNT in advance.I also want to mention here that the author have used the Material studio in that research work.ThanksKishore