منابع مشابه
Polymer transport in random flow
The dynamics of polymers in a random smooth flow is investigated in the framework of the Hookean dumbbell model. The analytical expression of the time-dependent probability density function of polymer elongation is derived explicitly for a Gaussian, rapidly changing flow. When polymers are in the coiled state the pdf reaches a stationary state characterized by power-law tails both for small and...
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Microfluidic field-effect flow control (FEFC) modifies the zeta potential of electroosmotic flow using a transverse electric field applied through the microchannel wall. Previously demonstrated in silicon-based and glass microsystems, FEFC is presented here as an elegant method for flow control in polymer-based microfluidics with a simple and low-cost fabrication process. In addition to direct ...
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Anode dry-out is the main mechanism identified to limit operation in an open metallic element (OME) PEFC. The fundamental water transport mechanisms in the OME PEFC were examined in order to engineer further improved performance and higher temperature operation required for efficient heat rejection. Specifically, the net water drag (NWD) was measured over a range of conditions and analyzed with...
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Contact resistances often contribute significantly to the overall device resistance in organic field-effect transistors (OFETs). Understanding charge injection at the metal-organic interface is critical to optimizing OFET device performance. We have performed a series of experiments using bottom-contact poly(3-hexylthiophene) (P3HT) OFETs in the shallow channel limit to examine the injection pr...
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Recent developments towards future polymer electronics are aimed at different applications as organic displays, complementary circuits, and all-polymer integrated circuits [1-3]. Basic devices are organic field-effect transistors (OFET, cross section in Figs.2 and 3) with an active layer made from an organic material. Until now the achieved performance of OFET's is not sufficient for envisaged ...
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ژورنال
عنوان ژورنال: Kobunshi
سال: 2004
ISSN: 0454-1138,2185-9825
DOI: 10.1295/kobunshi.53.254