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Metallic Wires (metallic + wire)

Distribution by Scientific Domains
Polymers and Materials Science60%

Selected Abstracts

Nanowires: Fabrication of Sub-10,nm Metallic Lines of Low Line-Width Roughness by Hydrogen Reduction of Patterned Metal,Organic Materials (Adv. Funct.

ADVANCED FUNCTIONAL MATERIALS, Issue 14 2010
Mater.
This computer rendered graphic displays direct writing of sub-10 nm metallic wires of low line-width roughness using an electron beam (shown as a sinusoidal wave), as presented by M. S. M. Saifullah, D. J. Kang, U. Steiner, et al. on page 2317. Sub-10 nm metallic wires of good integrity and low line-width roughness were obtained by reducing electron-beam patterned metal naphthenate lines in a hydrogen-rich atmosphere at 500°C for 1 h. [source]

Foldable Printed Circuit Boards on Paper Substrates

ADVANCED FUNCTIONAL MATERIALS, Issue 1 2010
Adam C. Siegel
Abstract This paper describes several low-cost methods for fabricating flexible electronic circuits on paper. The circuits comprise i) metallic wires (e.g., tin or zinc) that are deposited on the substrate by evaporation, sputtering, or airbrushing, and ii) discrete surface-mountable electronic components that are fastened with conductive adhesive directly to the wires. These electronic circuits,like conventional printed circuit boards,can be produced with electronic components that connect on both sides of the substrate. Unlike printed circuit boards made from fiberglass, ceramics, or polyimides, however, paper can be folded and creased (repeatedly), shaped to form three-dimensional structures, trimmed using scissors, used to wick fluids (e.g., for microfluidic applications) and disposed of by incineration. Paper-based electronic circuits are thin and lightweight; they should be useful for applications in consumer electronics and packaging, for disposable systems for uses in the military and homeland security, for applications in medical sensing or low-cost portable diagnostics, for paper-based microelectromechanical systems, and for applications involving textiles. [source]

Heparin release from slippery-when-wet guide wires for intravascular use

JOURNAL OF BIOMEDICAL MATERIALS RESEARCH, Issue 6 2002
Camiel C. L. Peerlings
Abstract Thin metallic wires with an adherent hydrophilic/ lubricious polymeric coating were manufactured in a new extrusion-like procedure. This procedure is part of a novel and efficient way of assembling lubricious guide wires for intravascular interventions, such as percutaneous transluminal angioplasty. It is reported that heparin can readily be incorporated in the hydrophilic coating. A set of heparin-containing guidewire models was made and studied in detail. This showed that (i) immersion of the guide-wire models in an aqueous environment leads to release of heparin from their surface; (ii) the presence of heparin in the coating does not impede the lubricity of the coils; (iii) addition of stearic acid in the coating, next to heparin, does not influence the lubricity of the guide-wire models. Two different charges of heparin (designated heparin-low and heparin-high) were incorporated in the coating. It is discussed that release of heparin from the surface of medical devices (e.g. guide wires and catheters) is much more effective than systemic heparinization, basically because dissolved heparin molecules have a much larger probability of simply passing a medical device's surface (axial convection) rather than contacting it (radial diffusion). © 2002 Wiley Periodicals, Inc. J Biomed Mater Res (Appl Biomater) 63: 692,698, 2002 [source]

Numerical study of polarization-dependent focusing for a bilayer planar FSS reflective lens at millimeter wavelengths

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 5 2004
Natalia Bliznyuk
Abstract In this paper, we numerically analyze the polarization-dependent focusing properties of a planar reflective lens formed by two parallel layers of nonuniform "gangbuster" surfaces (GSs) above a ground plane. Since these GSs consist of superdense arrays of thin finite-length parallel metallic wires, the desired phase patterns on such a lens surface are achieved by adjusting the lengths of these metallic wires for appropriate polarization components. In our analysis, we use the method of moments (MoM) and the transmission-lines analogy, along with the surface-equivalence theorem, to estimate the field intensity in the focal plane. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 40: 361,365, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.11382 [source]