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Research

Electronic device fabrication based on conducting polymer nanofibers: Motivating undergraduate students towards research in materials science Nicholas J. Pinto (Univ. of Puerto Rico - Humacao), DMR 0402766. Research

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Research

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  1. Electronic device fabrication based on conducting polymer nanofibers: Motivating undergraduate students towards research in materials scienceNicholas J. Pinto (Univ. of Puerto Rico - Humacao),DMR 0402766 Research Regio-regular poly(3-hexylthiophene) (P3HT) is a widely used semiconducting polymer in the fabrication of field effect transistors (FET). Via the use of electrospinning, submicron diameter fibers of P3HT, several microns in length have been prepared and configured to be used as a FET. This is the first report to use the electrospinning technique to prepare, in a matter of minutes, submicron size fibers of P3HT. Electrospinning is currently used as an easy one step process to fabricate one-dimensional polymer FET’s. Scanning Electron Microscope image of an electrospun P3HT fiber. The average length and diameter of the fiber was 54 mm and 670 nm respectively. Drain-source current (IDS) versus drain-source voltage (VDS) of an electrospun P3HT fiber FET for different back gate voltages (VGS) at 300 K. Inset: Variation of IDS versus VGS with VDS kept fixed at -80 V and the corresponding plot of IDS1/2 versus VGS. Synth. Metals, available online July 11, 2005.

  2. Electronic device fabrication based on conducting polymer nanofibers: Motivating undergraduate students towards research in materials scienceNicholas J. Pinto (Univ. of Puerto Rico - Humacao),DMR 0402766 Outreach During the last academic year 2004-2005, Pinto worked with a high school student (Rut) in the fabrication of polymer nanofibers using the electrospinning technique. This interaction was aimed at giving high school students an opportunity to participate in undergraduate research and was also presented at the regional high school science fair. Rut plans to continue working with Pinto this coming Fall. Education Under this grant, four undergraduate students spent the academic year 2004-2005 with Pinto doing research related to conducting polymers. All have presented their work at the island wide Junior Technical Meeting for undergraduates in March 2005 and at the National Conference on Undergraduate Research in Virginia in April 2005. One student will present a poster at the upcoming ACS meeting in Washington, DC in August 2005. Rut and Pinto with her poster at the regional high school science fair Pedro Carrión presenting his work at the Junior Technical Meeting

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