Azopolymer film as an actuator for organizing multiwall carbon nanotubes

443MWCNT are organized in the troughs or the crests of a SRG recorded in an azopolymer film, depending on the fabrication process. When MWCNT are deposited after recording the SRG, they locate in the troughs of the SRG. If they are deposited before recording the SRG, they are moved to the crest due to the mass transport of the azopolymer. Organization was achieved independently of the concentration of MWCNTs, due to the mass transport in the azopolymer and π-π stacking mediated interactions.