Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Brian D. Hunt"'
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 24:1318-1322
The growth on silicon substrates of arrayed bundles of multiwalled carbon nanotubes (CNTs) by metal catalyzed chemical vapor deposition of carbon from ethylene has been characterized and optimized. We find that, while CNTs can grow on bare Si substra
Publikováno v:
Nano Letters. 6:942-947
We describe the fabrication and characterization of a nanoelectromechanical (NEM) switch based on carbon nanotubes. Our NEM structure consists of single-walled nanotubes (SWNTs) suspended over shallow trenches in a SiO(2) layer, with a Nb pull electr
Publikováno v:
Nano Letters. 5:1469-1474
We have demonstrated Schottky diodes using semiconducting single-walled nanotubes (s-SWNTs) with titanium Schottky and platinum Ohmic contacts for high-frequency applications. The diodes are fabricated using angled evaporation of dissimilar metal con
Publikováno v:
Chemistry of Materials. 17:237-241
We describe a method to reliably pattern monolayers of iron nanoparticle (FeNP) colloids into submicron features for growth of single-walled carbon nanotubes (SWNTs) by chemical vapor deposition. Our process results in very clean patterns that are re
Publikováno v:
Journal of Electronic Materials. 23:849-853
The composition of pulsed-laser-deposited Y-Ba-Cu-O and Ba-K-Bi-O thin films is shown to be strongly affected by target conditioning, gas pressure, and target-substrate distance. For both compounds, ablation from a freshly sanded target surface resul
Publikováno v:
Physica C: Superconductivity. 230:141-152
High-quality superconductor/normal-metal/superconductor(SNS) edge-geometry weak links have been produced on silicon-on-sapphire (SOS) substrates using a new SrTiO(sub 3)/'seed layer'/cubic-zirconia (YS2) buffer system.
Autor:
Gregory G. Saulnier, A. Judas, Brian D. Hunt, Robert A. Zacher, Gilbert G. Fritz, Henry G. LeDuc
Publikováno v:
Journal of Low Temperature Physics. 93:653-658
We report on our work using NbN/MgO/NbN junctions for the detection of x-rays. Detectors based on superconducting tunneling junctions offer the prospect of energy resolution over an order of magnitude higher than is obtainable with the current genera
Autor:
Brian D. Hunt, Richard P. Vasquez, A. Kussmaul, Ayush Gupta, U. Kriplani, J. B. Barner, D. S. Reed, Marc C. Foote, D. M. Strayer, Nai-Chang Yeh, W. Jiang
Publikováno v:
Physical Review B. 48:9861-9864
The microwave vortex dissipation of superconducting ${\mathrm{Nd}}_{1.85}$${\mathrm{Ce}}_{0.15}$${\mathrm{CuO}}_{\mathit{x}}$ epitaxial films is investigated by use of a sapphire dielectric-ring resonator in the whispering gallery modes, and in dc ma
Publikováno v:
Physica C: Superconductivity. 207:381-390
We investigated the properties of all-high- T c edge-geometry Josephson weak links using superconducting YBa 2 Cu 3 O 7−δ (YBCO) electrodes and PrBa 2 Cu 3 O 7−δ (PBCO) normal-metal layers. The fabrication of the weak links involved first ion-m
Publikováno v:
Physica C: Superconductivity. 201:176-182
The composition of pulsed-ultraviolet-laser-deposited Y-Ba-Cu-O films was examined as a function of position across the substrate, laser fluence, laser spot size, substrate temperature, target conditioning, oxygen pressure and target-substrate distan