Author/Authors :
Tosaka، نويسنده , , Masatoshi and Tsuji، نويسنده , , Masaki and Ogawa، نويسنده , , Teppei and Kitano، نويسنده , , Hirofumi and Nakano، نويسنده , , Kohtaro and Kohjiya، نويسنده , , Shinzo and Danev، نويسنده , , Radostin and Nagayama، نويسنده , , Kuniaki، نويسنده ,
Abstract :
Self-assembly of nano-sized arrays by casting a dilute solution of a guest material on the friction-transferred poly(tetrafluoroethylene) (FT-PTFE) substrate was newly discovered. Long axis of the rod-like structures forming the arrays is aligned perpendicular to the chain direction of FT-PTFE, and accordingly, the arrays are highly anisotropic. This phenomenon was observed for aqueous or organic solutions of polymers or organic materials. Each rod-like structure forming the arrays is composed of small grains. The arrays in question are formed regardless to the crystallinity of the guest materials. The formation mechanism of the nano-sized arrays is still unclear. However, we guess that they are formed as a result of microscopic flow pattern at the edge of the solution film. The arrays in question may be a new type of dissipative structure.
