915 resultados para Fernando Arrabal
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Contiene: carta ms. del retor de Rafelguaraf al retor de Mirambell (sept. 1746). Quintilla ms.
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he nitrogen content dependence of the electronic properties for copper nitride thin films with an atomic percentage of nitrogen ranging from 26 ± 2 to 33 ± 2 have been studied by means of optical (spectroscopic ellipsometry), thermoelectric (Seebeck), and electrical resistivity measurements. The optical spectra are consistent with direct optical transitions corresponding to the stoichiometric semiconductor Cu3N plus a free-carrier contribution, essentially independent of temperature, which can be tuned in accordance with the N-excess. Deviation of the N content from stoichiometry drives to significant decreases from − 5 to − 50 μV/K in the Seebeck coefficient and to large enhancements, from 10− 3 up to 10 Ω cm, in the electrical resistivity. Band structure and density of states calculations have been carried out on the basis of the density functional theory to account for the experimental results.
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Se ha respetado la puntuación original
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Tít. tomado de principio de texto
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The first dark characterization of a thermometer fabricated with our Mo/Au bilayers to be used as a transition edge sensor is presented. High-quality, stress-free Mo layers, whose thickness is used to tune the critical temperature (TC ) down to 100 mK, are deposited by sputtering at room temperature (RT ) on Si3N4 bulk and membranes, and protected from degradation with a 15-nm sputtered Au layer. An extra layer of high-quality Au is deposited by ex situ e-beam to ensure low residual resistance. The thermometer is patterned on a membrane using standard photolithographic techniques and wet etching processes, and is contacted through Mo paths, displaying a sharp superconducting transition (α ≈ 600). Results show a good coupling between Mo and Au layers and excellent TC reproducibility, allowing to accurately correlate dM o and TC . Since dAu is bigger than ξM for all analyzed samples, bilayer residual resistance can be modified without affecting TC . Finally, first current to voltage measurements at different temperatures are measured and analyzed, obtaining the corresponding characterization parameters.
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Sign.: A-Z2, 2A-D2
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Hay un ejemplar encuadernado con: Excelencias y admirables frutos del agua bendita sacados del capítulo 31, de la vida de la esclarezida Virgen Santa Teresa de Jesus ... del angelico ... Santo Thomas ; del glorioso P. San Vicente Ferrer ... (XVIII/1682).
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Contiene: Las poesías que se compusieron en obsequio de nuestros soberanos, señalándolas con la debida distincion
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Hay un ejemplar encuadernado con: Oratio ad divinam Sapientiam : (NP08/27).
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Grab. en port. con el anagrama del impresor
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Pie de imp. consta en colofón