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Now showing items 21-27 of 27
Optically pumped InxGa₁âxN/InyGa₁âyN multiple quantum well vertical cavity surface emitting laser operating at room temperature.
(2004-01)
Room temperature vertical cavity lasing at the wavelength of 433nm has been successfully realized in InxGa₁âxN/InyGa₁âyN multiple quantum well without Bragg mirrors under photo-excitation. At high excitation intensity, ...
Ballistic Transport in Carbon Nanotubes from First-Principles Molecular Dynamics Simulations
(2004-01)
We determined the Landauer ballistic conductance of pristine nanotubes at finite temperature via a novel scheme that combines ab-initio molecular dynamics, maximally-localized Wannier functions, and a tight-binding formulation ...
PALM: Predicting Internet Network Distances Using Peer-to-Peer Measurements
(2004-01)
Landmark-based architecture has been commonly adopted in the networking community as a mechanism to measure and characterize a host's location on the Internet. In most existing landmark based approaches, end hosts use the ...
Mechanical Properties of Bulk Metallic Glasses and Composites
(2004-01)
We have studied the mechanical properties of monolithic bulk metallic glasses and composite in the La based alloys. La₈₆₋yAl₁₄(Cu, Ni)y (y=24 to 32) alloy systems was used to cast the ...
Charge storage in nanocrystal systems: Role of defects?
(2004-01)
Wet thermal oxidations of polycrystalline Si₀.₅₄Ge₀.₄₆ films at 600°C for 30 and 50 min were carried out. A stable mixed oxide was obtained for films that were oxidized for 50 min. ...
TiNi-based thin films for MEMS applications
(2004-01)
In this paper, some critical issues and problems in the development of TiNi thin films were discussed, including preparation and characterization considerations, residual stress and adhesion, frequency improvement, fatigue ...
Nanocomposite Thin Films for both Mechanical and Functional Applications
(2004-01)
The design methodology and realization of nanocomposite films aiming for mechanical (superhardness, toughness) and functional (optical, microelectronic) properties were discussed in this paper. Superhard TiCrCN and ...