Zobrazeno 1 - 10
of 36
pro vyhledávání: '"B. R. Weinberger"'
Autor:
John R. Hull, L. Lynds, S.A. Basinger, T.M. Mulcahy, H.E. Eaton, B. R. Weinberger, J. Van Valzah
Publikováno v:
IEEE Transactions on Magnetics. 27:2415-2422
A study of high-temperature superconductor composites for use in magnetic bearings applications is presented. Fabrication and characterization techniques are described. Magnetometry and mechanical force measurements are correlated, with particular em
Publikováno v:
Superconductor Science and Technology. 3:381-388
An experimental study of Meissner effect levitation involving high-temperature superconductors is presented. Two simple apparatuses are described for quantifying the static and dynamic characteristics of levitated systems. The levitation properties o
Publikováno v:
Applied Physics Letters. 70:255-257
Measurements of both the ac magnetic susceptibility in melt processed and film Y–Ba–Cu–O and frictional losses of spinning permanent magnets levitated above Y–Ba–Cu–O are presented. A direct correlation is observed only when large suscept
Autor:
B. R. Weinberger, R. B. Garber
Publikováno v:
Applied Physics Letters. 66:2409-2411
A process is described for the deposition of anatase titanium dioxide films by reactive magnetron sputtering. The films have a porous columnar morphology with a high effective surface area making them well suited to be used as photocatalysts. Data ar
Publikováno v:
Journal of Applied Physics. 72:2089-2091
Magnetic levitation and stiffness have been measured in several systems composed of a permanent magnet elastically suspended above a stationary melt‐textured sample of Y‐Ba‐Cu‐O. The levitation force and vertical stiffness have been calculate
Publikováno v:
Applied Physics Letters. 59:1132-1134
A study of drag in rotating permanent magnet/high temperature superconductor magnetic bearings is reported. The effects of magnet asymmetry, atmospheric resistance, and eddy currents are discussed. One of the bearings achieved a rotational speed of 2
Autor:
L. Lynds, B. R. Weinberger
Publikováno v:
Laser Ablation Mechanisms and Applications ISBN: 9780387977317
Pulsed KrF (248 nm) excimer laser ablation of targets can generate quasi-neutral ground state atomic particle plasmas with energies in the range of 200 -1100 eV. Onset of plasma formation occurs when optical intensities exceed 108 W/cm2. The expandin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7cf509a2f3733e703889739e538be6c
https://doi.org/10.1007/bfb0048378
https://doi.org/10.1007/bfb0048378
Autor:
B. R. Weinberger, L. Lynds
Publikováno v:
MRS Proceedings. 191
Pulsed KrF (248 nm) excimer laser ablation of targets can provide a source of atomic particles with energies in the range of 40 – 850 eV with beam-like characteristics. Optical intensities above about 109 W/cm2 lead mainly to single and multiply ch
Autor:
Stephen Garoff, Eli Yablonovitch, T. J. Gmitter, B. R. Weinberger, Harry W. Deckman, W. Kobasz
Publikováno v:
Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films. 3:887-891
A nonoxide surface passivation for crystalline silicon is described. It involves the fluorination of the silicon surface. Characterization by photoconductive lifetime measurements and C–V measurements on MIS structures indicate that the fluorinated
Optical Absorption in Polyacetylene: A Direct Measurement Using Photothermal Deflection Spectroscopy
Publikováno v:
Physical Review Letters. 53:86-89
We present direct measurements of the optical absorption in undoped and ammoniatreated polyacetylene utilizing the technique of photothermal deflection spectroscopy. Our spectra show an Urbach-type edge and a broad, N${\mathrm{H}}_{3}$-sensitive sub-