نتایج جستجو برای: polyelectrolyte multilayer composite
تعداد نتایج: 143945 فیلتر نتایج به سال:
Polyelectrolyte multilayer (PEM) films, established using the layer-by-layer (LbL) technique, are attractive for controlled drug delivery in order to improve tissue regeneration. For instance, the LbL-deposition provides the possibility to incorporate biomolecules via electrostatic interactions for drug delivery, which might be moreover combined with a stable biofunctionalization via covalent b...
– Multivalent ions can induce condensation of like-charged polyelectrolytes into compact states, a process that requires different ion valence for different polyelectrolyte species. We have examined the trivalent ion induced condensation behavior in binary anionic polyelectrolyte mixtures consisting of DNA coils and F-actin rods, and observe a micro-phase separation between the two polyelectrol...
With an ever-increasing need for thin, flexible and functional materials in electrochemical systems, the layer-by-layer (LbL) technique provides a simple and affordable route in creating new, active electrodes and electrolytes. The LbL technique, which is based upon the alternate adsorption of oppositely charged species from aqueous solution, possesses unprecedented control of materials selecti...
The overall goal of this thesis was to exploit the versatility of the polyelectrolyte multilayer (PEM) to fabricate a novel micro/nanofluidic device for patterning bacteria in BioMEMS. Nanofluidic channels offer new opportunities for advanced biomolecule manipulation and separation science because they provide unique capabilities such as ion-permselectivity and nanometer-sized structures. In or...
In this study, a time-dependent 2D axisymmetric model of a multilayer hollow fiber composite membrane for gas separation is proposed. In spite of the common multilayer membranes, which a dense layer coated on a porous support layer and subjected into the feed stream, here, the porous support is exposed to the feed gas. In this regard, the governing equations of species transport are developed f...
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