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Multifunctional Nanofibers Comprised of Conducting and Ferroelectric Polymer Composites.

机译:多功能纳米纤维由导电和铁电聚合物复合材料组成。

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Work on this proposal concentrated on studying the following polymers: poly(vinylidene fluoride-trifluoroethylene) (PVDF-TrFE); poly(3- hexylthiophene) (P3HT); poly(3,4-ethylenedioxthiophene) doped with poly-styrene sulfonic acid (PEDOT-PSSA); and (poly[N,N?-bis(2- octyldodecyl)-naphthalene-1,4,5,8-bis(dicarboximide)-2,6-diyll-alt-5,5?-(2,2?-bithiophene)]-[P(ND12OD-T2)]n. We used the Langmuir Blodgett technique to prepare thin films and electrospinning to prepare fine fibers of these polymers. The goal was to make devices and sensors. Using an atomic force microscope we were able to make cuts into the fibers (nano-shaving) and record the current-voltage characteristics of the cut fiber. The results show the onset of an electronic gap as the cuts progress into the fiber. Field effect transistors were also prepared and used as UV sensors and also the device performance improved under UV illumination. The work was carried out by several undergraduate students and one graduate student. Students were involved in many poster presentations at scientific conferences and in refereed publications. State of the art equipment was also purchased making our laboratory competitive for undergraduate institutions. The following report summarizes the various projects that were undertaken over the three year period of this project.

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