نتایج جستجو برای: conductive polymer
تعداد نتایج: 109406 فیلتر نتایج به سال:
We developed a robust method to construct large-scale multi-layered assemblies with orthogonally oriented stripes on a capillary tube using a confined evaporative self-assembly (CESA) method. A mixture of conductive polymer poly(3-hexylthiophene) (P3HT) and biocompatible polylactic acid (PLA) was chosen as the model polymer and the molecular chain orientation of P3HT in an individual stripe cou...
This Communication describes the fabrication of planar structures comprising metallic features with nanometer-scale lateral dimensions in polymer prepared by sectioning a thin metallic film, embedded in a polymer matrix, in a plane perpendicular to the metallic film. This procedure converts a structure that is thin along the z-axis into a structure that is thin along the x-axis. The embedded th...
Resistive switching in photocross-linkable polymer memory devices was found to occur in localized areas of the device. In order to elucidate the reason behind the switching, we used focused ion-beam to prepare a cross-section of the device. It was found that after the device was switched to the high conductive state, in certain parts of the device, the electrodes were only about 5 nm apart. Thi...
Polymer solar cells have shown good prospect for development due to their advantages of low-cost, light-weight, solution processable fabrication, and mechanical flexibility. Their compatibility with the industrial roll-to-roll manufacturing process makes it superior to other kind of solar cells. Normally, indium tin oxide (ITO) is adopted as the transparent electrode in polymer solar cells, whi...
This paper reports the synthesis and characterizations of a new water-soluble pol &JrB phenylene) (PPP) and its applications in preparing self-assembled multi-layer films. This new water-soluble conducting polymer was prepared through the sulfonation reaction of poly(pquarterphenylene-2,2’-dicarboxylic acid). The incorporation of sulfonate groups has dramatically improved PPP’s solubility in wa...
As microelectronic packaging industry grows explosively, high I/O density interconnects and reliable packaging design are recognized as the main concern of the IC packaging industry. Hence, in this investigation, a novel type of anisotropic conductive film (ACF) composed of cobalt nanowires and polymer was developed and used in place of conventional solder bumps for ultra-fine pitch interconnec...
A canopy-shaped pyrrole derivative 2 was prepared, in which a sterically demanding pendant group is juxtaposed to the pyrrole fragment to minimize interstrand pi-pi stacking interactions in the resulting polymer. Anodic polymerization of 2 afforded highly conductive poly(2), the electronic structure of which was probed by various spectroelectrochemical techniques. A limited charge delocalizatio...
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This work presents an insight into the effect of conductive filler content on both electrical and thermal properties of a polymer composite system. The electrical conductivity of an insulating polymer can be achieved by dispersing conducting fillers (e.g., metal, graphite powder, carbon black, carbon fiber) in the polymer matrix. The resulting materials are referred to as conducting polymer com...
Title of Dissertation: CHARACTERIZATION, MODELING, AND OPTIMIZATION OF POLYMER COMPOSITE PIN FINS Raj Bahadur, Doctor of Philosophy, 2005 Directed By: Professor, Avram Bar-Cohen, Mechanical Engineering Increasing electronic product manufacturing volumes and cooling requirements necessitate the use of new materials and innovative techniques to meet the thermal management challenges and to contri...
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