Zobrazeno 1 - 10
of 16
pro vyhledávání: '"J. N. Broughton"'
Publikováno v:
Journal of Power Sources. 156:741-747
Electrochemical oxidation of Mn thin films produces a highly capacitive, porous MnO 2 surface layer. The effects of current density and deposited Mn layer thickness on the morphology of the porous surface layer are quite pronounced. A higher current
Publikováno v:
Acta Materialia. 53:957-965
An in-depth study of the oxidation step required to produce electrochemical capacitors from porous manganese-oxide materials was carried out. The oxidation process takes place under the application of a small anodic current in a solution of 1 M Na2SO
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 17:306-309
SiO2 passivation of thin film Au–Bi2Te3 based Peltier devices was investigated. SiO2 deposited by plasma enhanced chemical vapor deposition at 350 °C was found to adversely affect the Au–Bi2Te3 devices, while SiO2 thin films deposited in a react
Autor:
G. Este, Christopher J. Backhouse, Kevin Robbie, J. N. Broughton, Jason Parks, Michael J. Brett, Steven K. Dew
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 14:2175-2181
A technique of sputtering with low pressures and large substrate to target distances (long throw) has been studied with a view of applying the technique to the deposition of titanium and titanium nitride on high aspect ratio topographies. The angular
Publikováno v:
Journal of Applied Physics. 76:5047-5053
The generation of keV x‐ray emission from plasma produced by a 15 mJ 90 ps KrF laser pulse focused to an 8 μm spot on a copper target preceded by a similar 8 mJ pulse is studied experimentally. The change in efficiency of generation of keV x rays
Autor:
J. N. Broughton, R. Fedosejevs
Publikováno v:
Journal of Applied Physics. 74:3712-3723
The emission of 800–1400 eV x rays from plasmas produced by KrF discharge laser pulses with durations in the range of 1 and 100 ps with energies up to 50 mJ has been studied using various metal targets. The emission spectra, angular distribution, a
Publikováno v:
Laser and Particle Beams. 10:661-675
We report on KrF laser-plasma interaction studies at focused intensities up to 4 × 1014 W/cm2 for pulse durations of 1–2 ns and up to 1015 W/cm2 for pulse duration of 100 ps. The longer-pulse experiments are concerned with quantifying two importan
Autor:
R. Fedosejevs, J. N. Broughton
Publikováno v:
Journal of Applied Physics. 71:1153-1162
The generation of x rays from the interaction of low‐energy (10–50 mJ) 120‐ps KrF laser pulses with solid targets has been experimentally investigated. Conversion efficiency as a function of laser energy and detailed keV x‐ray spectra have be
Publikováno v:
IEEE Photonics Technology Letters. 7:1180-1182
A compact integrated 980/1550-nm wavelength multi/demultiplexing coupler based on multimode interference effects is demonstrated. The device is useful for integration with rare-earth doped waveguide amplifiers and lasers. It is shown that the device
Publikováno v:
IEEE Photonics Technology Letters. 7:1037-1039
A novel technique is presented for the optimization of waveguide couplers configured as broad-band wavelength (de) multiplexers. We show that bending the coupler to an appropriate radius modifies the beat lengths at each wavelength, so that two-mode