Patterned deposition of PEO nanofibers

Nanofibers will be of great use in tissue engineering, filtration, protective clothing and micro/nano devices etc. In this paper a facile method is introduced to traditional electrospinning to deposit patterned nanofibers to expand its applications, in which three types of parallel top-bottom configurations of two different materials, that is, plastic (polyethylene terephthalate, PET)-glass, plastic-copper and glass-copper plate is utilized as the collector respectively to change the electric field around the gap between the parallel top plate. The experiment results demonstrate that aligned and patterned nanofibers can be well collected along the gap between PET plates in both PET-glass and PET-copper configuration because PET can attract positive charges to strongly repel the positively charged nanofibers due to electro-negativity of oxygen of carbonyl group for PET, but to the glass-copper configuration, patterned but chaotic nanofibers can be obtained.