Listar División de Nanociencias y Materiales por título
Mostrando ítems 474-493 de 566
-
Stability of FeVO4-II under Pressure: A First-Principles Study
(MDPI, 2022)"In this work, we report first-principles calculations to study FeVO4 in the CrVO4-type (phase II) structure under pressure. Total-energy calculations were performed in order to analyze the structural parameters, the ... -
Stationary states in a potential well
(UNESCO, 2007)"In the early days of the 20th century a set of important observations in atomic and molecular physics could not be explained on the basis of the laws of classical physics. One of the main findings was the emission of light ... -
Statistical similarity between the compression of a porous material and earthquakes
(2013-02)"It has long been stated that there are profound analogies between fracture experiments and earthquakes; however, few works attempt a complete characterization of the parallels between these so separate phenomena. We study ... -
Strong and stable photoluminescence from the semiconducting inner tubes within double walled carbon nanotubes
(2009-01)"We examined the optical features of single wall carbon nanotubes (SWNTs) and the inner tubes within double walled carbon nanotubes (DWNTs) having the same (n,m) chirality. The brighter and more stable photoluminescence ... -
Structural and magnetic characterization of the intermartensitic phase transition in NiMnSn Heusler alloy ribbons
(2013-05)"Phase transitions and structural and magnetic properties of rapidly solidified Ni50Mn38Sn12 alloy ribbons have been studied. Ribbon samples crystallize as a single-phase, ten-layered modulated (10M) monoclinic martensite ... -
Structure and photocatalytic activity of maleic anhydride-functionalized TiO2 nanoparticles by a simple method
(BMC, 2022)"Titanium dioxide (TiO2) nanoparticles were functionalized with maleic anhydride (MA). The extension of adsorbed MA on the TiO2 was evaluated by ultrasonic and magnetic stirring. Total Organic Carbon and Thermogravimetric ... -
Structures and electronic properties of TinV (n = 1–16) clusters: first-principles calculations
(American Chemical Society, 2016)"Structures and electronic properties of TinV (n = 1–16) clusters have been investigated using density functional theory with the generalized gradient approximatio. The calculations have shown that the TinV clusters favor ... -
Study of the presence of spherical deformations on the Al top electrode due to electroforming in rewritable organic resistive memories
(Royal Society of Chemistry, 2017)"Physical deformations are observed at the top electrodes during the electroforming process in Al/PEDOT: PSS + nitrogen doped multiwalled carbon nanotube (N-MWCNTs)/Al rewritable resistive memory devices. These physical ... -
Superfluid Rayleigh–Plesset extension of FLRW cosmology
(Elsevier, 2021)"Guided by the analogy with the Rayleigh–Plesset dynamics of multielectron bubbles in superfluid He-4, we consider the cosmological FLRW evolution equation with additional cubic and sixth powers of the inverse of the scale ... -
Superlinear photoluminescence by ultrafast laser pulses in dielectric matrices with metal nanoclusters
(Nature Publishing Group, 2019)"An intense photoluminescence emission was observed from noble metal nanoclusters (Pt, Ag or Au) embedded in sapphire plates, nucleated by MeV ion-implantation and assisted by an annealing process. In particular, the ... -
Superparamagnetic state in La0.7Sr0.3MnO3 thin films obtained by rf-sputtering
(Nature Publishing Group, 2020)"A novel superparamagnetic state has been observed in high quality La0.7Sr0.3MnO3 (LSMO) thin films directly grown by rf-sputtering on SiOx/Si(100) substrates. The films are nanostructured without grain boundaries, constituted ... -
Supersymmetric free-damped oscillators: adaptive observer estimation of the Riccati parameter
(2006)"A supersymmetric class of free damped oscillators with three parameters has been obtained in 1998 by Rosu and Reyes through the factorization of the Newton equation. The supple-mentary parameter is the integration constant ... -
Supersymmetric methods in the traveling variable: inside neurons and at the brain scale
(2008)"We apply the mathematical technique of factorization of differential operators to two different problems. First we review our results related to the supersymmetry of the Montroll kinks moving onto the microtubule walls ... -
Supersymmetric pairing of kinks for polynomial nonlinearities
(2005)"We show how one can obtain kink solutions of ordinary differential equations with polynomial nonlinearities by an efficient factorization procedure directly related to the factorization of their nonlinear polynomial part. ... -
Supersymmetry of FRW barotropic cosmologies
(2006)"Barotropic FRW cosmologies are presented from the standpoint of nonrelativis-tic supersymmetry. First, we reduce the barotropic FRW system of diferential equations to simple harmonic oscillator diferential equations. ... -
Surface modification of TiO2 with Ag nanoparticles and CuO nanoclusters for application in photocatalysis
(American Chemical Society, 2016)"Ag and CuO nanoparticles (NPs) synthesized on the surface of commercial TiO2 (P25) by radiolytic reduction were characterized by diffuse reflectance spectroscopy (DRS), transmission electron microscopy (TEM), high-angle ... -
Surface modified semiconductors with metal nanoparticles: photocatalysts with high activity under solar light
(2016-05)"La modificación del TiO2-P25, con uno o dos-metales, han atraído una considerable atención en los últimos años, como una clase de catalizadores y photocatalizadores altamente activos bajo la radiación UV y la luz visible. ... -
Synchronization of the frenet-serret linear system with a chaotic nonlinear system by feedback of states
(2005)"A synchronization procedure of the generalized type in the sense of Rulkov et al [Phys. Rev. E 51, 980 (1995)] is used to impose a nonlinear Malasoma chaotic motion on the Frenet-Serret system of vectors in the differential ... -
Synthesis and characterization of doped single-walled carbon nanotubes and graphitic nanoribbons.
(2009)"Este trabajo concentra resultados experimentales de la síntesis de nanotubos de carbono de pared sencilla (SWNTs) y de nanolistones grafíticos, así como una extensiva caracterización de los mismos. El método de síntesis ... -
Synthesis and characterization of GaN rods prepared by ammono-chemical vapor deposition
(2012-04)"GaN rods were deposited by chemical vapor deposition (CVD) onto sapphire (0 0 0 1) and amorphous quartz. The reactive Ga species in vapor the phase was formed with NH4Cl and gallium. The unidirectional growth was catalyzed ...