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纳米结构化三相接触线的新效应

刘刚;赵江

  Structured three-phase contact lines were created on the ordered surface of block copolymer of PS-b-PMMA, and the physics and new effects of such a nano-structured contact line were investigated. By molecular combing technique, single DNA molecule was successfully oriented according to the position of PMMA dots. By droplet drying processes, nano-fibers of polyvinylpyrrolidone were fabricated. Such nano-fibers were discovered to line up with the surface structures, i.e. they follow the position of PMMA bots. The physical mechanism of the nano-structured contact line was discussed as the effect of contact line pinning-depinning, surface tension and viscosity of polymer solution.……