Highlights
Nov 7, 2006
Eu-doped Y2O3 phosphor films through a precursor plasma spraying technique
P. Sujatha Devi, J. Margolis, J. B. Parise, S. Sampath and H. Herman
Europium-doped yttrium oxide (Eu-Y2O3) luminescent films have been produced directly from a solution precursor using a radio frequency (RF) plasma spray technique. Highly crystalline and luminescent films were grown on Si (100) and steel substrates by this process. X-ray diffraction analyses on these films confirm that polycrystalline cubic Y2O3 phase has formed in-situ with no impurity phases.
Nov 6, 2006
University of Massachusetts Amherst
Interfacial Assembly of Nanoparticles
The fabrication of functional nanostructured materials requires practical approaches to self-assembly on multiple length scales. Here, the directed self-assembly of functionalized, luminescent nanoparticles at oil-water interface, followed by crosslinking of the associated ligands, affords robust membranes. These composite membranes, nanometers in thickness, are shown to be effective diffusion barriers that have potential applications in controlled encapsulation and release.
Oct 30, 2006
University of Southern Mississippi
IRG 2: Formation of Polymeric Nanotubes
In a human body, phospholipids form all kinds of different membranes and self-arrange into different objects. Some form unstable tubes.
Such tubes in water may serve as templates for making nanotubes which may store drugs or other chemicals, or may suck up other species.
Oct 24, 2006
Princeton University
Supercurrents Flex Cantilever to Reveal Vortices
A soft cantilever beam, which can detect a very weak force, has been used by IRG1 researchers to uncover a striking property of cuprate superconductors: that trace supercurrents surrounding magnetic flux vortices persist for tens of degrees above the superconducting transition temperature Tc. The field needed to unbind these paired electrons is 60-100 times stronger than that inside a clinical MRI machine.
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