Zobrazeno 1 - 10
of 15
pro vyhledávání: '"Raul Fainchtein"'
Autor:
Robert E. Gold, David R. Roth, John O. Goldsten, Raul Fainchtein, Richard H. Maurer, James Kinnison
Publikováno v:
Acta Astronautica. 52:405-410
We describe the instrument design and detector development for MANES which has been selected to fly on the Mars 2003 Lander. Section 1 explains the need for the spectrometer in determining the increased risk of carcinogenesis for astronauts. Section
Publikováno v:
Journal of Applied Physics. 86:4619-4625
We have developed a mechanical method for modulating sample magnetization in magnetic resonance force microscopy experiments. A small-amplitude, low-frequency dithering of a magnetic field gradient source relative to a sample is used to create an osc
Autor:
David M Brown, Stuart D. Milner, E. H. Hwang, Karen Siegrist, Andrew H. Monica, Christopher C. Davis, Raul Fainchtein
Publikováno v:
Physical Review B. 85
Vertically aligned carbon nanotube (VACNT) arrays have been reported to be the ``blackest'' material fabricated to date. They also have a thermal conductivity parallel to the VACNT axis that is much larger than their thermal conductivity perpendicula
Publikováno v:
Applied Physics Letters. 80:1794-1796
We applied the recently developed technique of force-detected nuclear magnetic resonance (NMR) to observe 71Ga, 69Ga, and 75As in GaAs. The nuclear spin-lattice relaxation time is 21$\pm$5 min for 69Ga at $\sim 5$ K and 4.6 Tesla. We have exploited t
Autor:
Raul Fainchtein, T. J. Kistenmacher, Dwaine O. Cowan, S. Yoon, Walter F. Smith, M. Yoo, A. L. deLozanne, S. T. D'Arcangelis
Publikováno v:
Physical Review B. 47:4802-4805
A scanning tunneling microscope and an atomic-force microscope were used to study the surface structure of the bc plane of a \ensuremath{\kappa}-(BEDT-TTF${)}_{2}$Cu(NCS${)}_{2}$ crystal. The individual bis(ethylene- dithio)tetrathiafulvalene (BEDT-T
Publikováno v:
Applied Physics Letters. 73:3778-3780
To date, magnetic-resonance force microscopes employing a magnetic-field gradient source mounted to a microcantilever have suffered from a deleterious dependence of the effective cantilever spring constant on the external magnetic field. A “magnet-
Autor:
Marc B. Airola, Raul Fainchtein, N. T. Boggs, Michael E. Thomas, Christopher C. Carter, Joany Jackman
Publikováno v:
SPIE Proceedings.
Despite the wide spread need for optical cross-section data on single spore bio-aerosols, available databases are sparse and unreliable. Information reported is based on short path measurements on high concentration media containing particle clusters
Publikováno v:
SPIE Proceedings.
Pulsed-photoacoustic spectroscopy in the near IR portion of the optical spectrum was used as a local technique for quantitative monitoring of tissue hemoglobin concentration and its oxygenation state. A pulsed, tunable optical source coupled to a 1mm
Publikováno v:
Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model, and Human Studies II.
Pulsed-photoacoustic spectroscopy (PPAS) is an in-situ technique used for quantitative monitoring of brain-tissue hemoglobin concentration and its oxygenation state. In contrast to most spectroscopic techniques that measure infrared absorption PPAS d