Short dangling bond wires (DB wires), fabricated on H-terminated Si(001) surfaces, show patterns of displacement that depend on their length. We have performed density function calculations, with and without spin-polarisation, designed to investigate the atomic and electronic structure of these wires. As expected, we find that even length wires are accurately modelled by non-spin polarised calc...

Background Most patients have temporary epicardial pacing wires placed during cardiac surgery; the wires are removed usually during the first five postoperative days(1). In some patents, however, wire removal is difficult. In these cases, wires are cut short at the skin level and left in situ. Retained electrodes are usually well tolerated and complications are rare. Hereby we report a patient ...

The giant magneto-impedance (GMI) effect has been studied in 3 different families of amorphous wires: conventional amorphous wires (125 μm in diameter), cold drawn wires (50 and 20 μm in diameter) and thin glass coated amorphous microwires (with metallic nucleus diameter of about 15 μm). These wires have been investigated in the frequency range 1 – 500 MHz. A remarkable difference in the magnet...

OBJECTIVE This research aimed at comparing the qualitative chemical compositions and the surface morphology of fracture regions of eight types of Nickel/Titanium (NiTi) conventional wires, superelastic and heat-activated (GAC, TP, Ormco, Masel, Morelli and Unitek), to the wires with addition of copper (CuNiTi 27ºC and 35ºC, Ormco) after traction test. METHODS The analyses were performed in a ...

Concern about the performance of wires in scaled technologies has led to research exploring other communication methods. This paper examines wire and gate delays as technologies migrate from 0.18m to 0.035m feature sizes to better understand the magnitude of the wiring problem. Wires that shorten in length as technologies scale have delays that either track gate delays or grow slowly relative t...

Strong asymmetry of electron mobility in InGaAs/InAlAs heterostructures (lattice matched to InP) with the presence of InAs quantum wires was observed. Self-assembled InAs quantum wires, embedded in an InGaAs matrix close to the hetero-interface, has a strong effect in electron conduction in the interface channel. The low temperature mobility for electrons moving parallel to the quantum wires is...

Many large coiled-coil proteins are being found associated peripherally with the cytoplasmic face of the organelles of the secretory pathway. Various roles have been proposed for these proteins, including the docking of donor vesicles or organelles to an acceptor organelle prior to fusion, and, in the case of the Golgi apparatus, the stacking of the cisternae [1] [2] [3] [4] [5]. Such critical ...

Coiled-coil domains within and between proteins play important structural roles in biology. They consist of two or more alpha helices that form a superhelical structure due to packing of the hydrophobic residues that pattern each helix. A recent continuum model showed that the correspondence between the chirality of the pack to that of the underlying hydrophobic pattern comes about because of t...