Browsing División de Nanociencias y Materiales by Title
Now showing items 537-556 of 587
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The Effect of a Yb Co-Dopant on the Blue Upconversion and Thermoluminescent Emission of SrLaAlO4:Yb3+,Tm3+ Phosphors
(MDPI, 2023)In this study, we described the structural, morphological, optical, photoluminescence, and thermoluminescence properties of SrLaAlO4:Tm3+,Yb3+ (SLAO:Tm,Yb) blue-emitting phosphors made by combustion synthesis and a ... -
The effect of cooling rate on magnetothermal properties of Fe49Rh51
(Elsevier, 2020)"We have investigated the effects of quenching rate on the thermal dependence of the magnetic entropy change ?SM(T) and the magnetic field induced hysteresis loss through the antiferromagnetic (AFM)???ferromagnetic (FM) ... -
The geometrical characteristics of fcc, hcp, and polycrystalline nanowires: simulations of transmission electron microscopy images and diffraction patterns
(2009-08)"To theoretically study the physicochemical properties of nanowires, it is necessary to build the corresponding atomic geometrical models. Here we present the geometrical characteristics of nanowires with fcc, hcp, and ... -
The Hurst exponents of Nitzschia sp. diatom trajectories observed by light microscopy
(Elsevier, 2015)"We present the results of an experiment with light microscopy performed to capture the trajectories of live Nitzschia sp. diatoms. The time series corresponding to the motility of this kind of cells along ninety-five ... -
The hyperbolic, the arithmetic and the quantum phase
(2004)"We develop a new approach of the quantum phase in an Hilbert space of finite dimension which is based on the relation between the physical concept of phase locking and mathematical concepts such as cyclotomy and the ... -
The influence of texture on the reversible elastocaloric effect of a polycrystalline Ni50Mn32In16Cr2 alloy
(American Institute of Physics, 2018)"We have studied the correlation between the elastocaloric effect and the crystallographic direction where a uniaxial stress is applied in a textured polycrystalline Ni-Mn-In-Cr ferromagnetic shape memory alloy; this alloy ... -
The role of silver nanoparticles functionalized on TiO2 for photocatalytic disinfection of harmful algae
(2015)"Silver loaded TiO2 samples were prepared by photodeposition of different amounts of Ag+ ions over commercial titanium dioxide (Evonik TiO2 P25) in aqueous media without the presence of sacrificial agents. The obtained ... -
The three-step master equation: class of parametric stationary solutions
(2005)"We examine the three-step master equation from the standpoint of the general solution of the associated discrete Riccati equation. We report by this means stationary master solutions depending on a free constant parameter, ... -
The young and the city: crowdsourcing urban awareness in a developing country
(ICST, 2014)"We present a crowdsourcing study that investigates impressions of urban spaces by young inhabitants in a city in the developing world. Our goal is to obtain collective perceptions from the actual inhabitants of the city ... -
Theoretical characterization of several models of nanoporous carbon
(IOP Publishing, 2003)"Elastic, electronic and vibrational properties of seven models of nanoporous carbon are reported. The studied structures are periodic graphitic arrangements with heptagonal and octagonal rings of carbon, known as Schwarzites. ... -
Toxicidad de nanopartículas magnéticas en un modelo in-vitro de barrera hematoencefálica
(2018-07)"Las nanopartículas magnéticas (NPMs) de origen antropogénico, como los son las nanopartículas de hierro principalmente en fase de magnetita (Fe3O4), son liberadas al medio ambiente como resultado, principalmente, de la ... -
Transform of Riccati equation of constant coefficients through fractional procedure
(2003)"We use a particular fractional generalization of the ordinary differential equations that we apply to the Riccati equation of constant coefficients. By this means the latter is transformed into a modified Riccati equation ... -
Transformación magneto-estructural y efecto magnetocalórico en aleaciones Mn1−xCrxCoGe (x = 0.04, 0.11) y MnNiGe1.05 obtenidas por solidificación rápida
(2015-06)"En la presente tesis se estudia el efecto magnetocalórico (EMC) en cintas de aleaciones Mn1-xCrxCoGe para x=0.04, 0.11 y MnNiGe1.05 obtenidas por enfriamiento ultrarrápido empleando la técnica de temple rotatorio. Las ... -
Transformation behavior and inverse caloric effects in magnetic shape memory Ni44-xCuxCo6Mn39Sn11 ribbons
(2017-10)"An influence of the Cu doping on structural, magnetic and thermoelastic properties of the Heusler Ni44-xCuxCo6Mn39Sn11 (x = 1–4 at%) ribbons has been investigated. It is found that the addition of Cu stabilizes austenite ... -
Transformation behavior and magnetocaloric effect in Mn1−xCrxCoGe (x = 0.04 and 0.11) melt-spun ribbons tailored by heat treatment
(Elsevier, 2017-12)"Recently, MnNiGe and MnCoGe intermetallic compounds have received a considerable attention due to the coupled tunable martensitic and magnetic transitions as well as giant magnetocaloric effect (MCE) they exhibit. In this ... -
Transformation process dependent magnetocaloric properties of annealed Ni50Mn18Cu7Ga25 ribbons
(Elsevier, 2017)"The properties related to magnetocaloric effect (MCE) of annealed Ni50Mn18Cu7Ga25 ribbons were studied in connection with their microstructural features and magnetostructural transformations. The differences in magnetic ... -
Transformation temperatures and electrochemical behavior of polycrystalline Fe-Doped Ni-Mn-Ga and Co-Ni-Ga Alloys
(ESG, 2018)"The effect of Fe addition on martensitic transformation temperatures and electrochemical behavior was studied in polycrystalline Ni51.4Mn24.8-XGa23.8FeX alloys (1<x<2.2) and Co38.3Ni32.1Ga29.6 as alternative to Ni-Mn-Ga ... -
Transitional behaviour in the transformation from active end planes to stable loops caused by annealing
(IOP Publishing, 2003)"Here we investigate the stabilization process on the active outer/inner surfaces (or the end plane of a graphene sheet) for shortened cup-stacked-type carbon nanotubes caused by annealing, utilizing both analytic and ... -
Transport and diffusion on crystalline surfaces under external forces
(IOP Publishing, 2005)"We present a numerical study of classical particles obeying a Langevin equation and moving on a solid crystalline surface under an external force that may either be constant or modulated by periodic oscillations. We focus ... -
Transporte electrónico en punto cuánticos
(2021-10-28)"En el transporte electrónico en puntos cuánticos pueden aparecer algunos efectos particulares dependiendo de las características especificas del sistema como la geometría o la presencia de campos magnéticos. En este trabajo ...