División de Nanociencias y Materiales: Envíos recientes
Mostrando ítems 321-340 de 588
-
Síntesis de pozos cuánticos de GaN/InGaN/GaN en estructura cúbica para emisión sintonizada de luz
(2016-02)"En años recientes la utilización de dispositivos de iluminación de luz blanca de estado sólido ha ido aumentando de forma significativa. El ahorro en energía y por tanto económico a largo plazo que dispositivos como LED's ... -
Design of plasmonic gold nanoantennas and their evaluation for photothermal therapy
(2018-04)"Anisotropic gold nanoparticles (AuNPs) are known as promising tools for localized photo-thermal therapy (PTT) of malignant cells. These anisotropic AuNPs present tunable surface plasmon resonances (SPR) with ideal NIR ... -
Texture-induced enhancement of the magnetocaloric response in melt-spun DyNi2 ribbons
(2013-10)"The magnetocaloric properties of melt-spun ribbons of the Laves phase DyNi2 have been investigated. The as-quenched ribbons crystallize in a single-phase MgCu2-type crystal structure (C15; space group Fd (3) over barm) ... -
Synthesis, characterization, and sensor applications of spinel ZnCo2O4 nanoparticles
(MDPI, 2016-12)"Spinel ZnCo2O4 nanoparticles were synthesized by means of the microwave-assisted colloidal method. A solution containing ethanol, Co-nitrate, Zn-nitrate, and dodecylamine was stirred for 24 h and evaporated by a microwave ... -
Obtención y caracterización de nanopartículas de plata soportadas en fibra de algodón
(2013)"En este trabajo se prepararon biocompositos de nanopartículas de plata utilizando fibra de algodón como soporte y Camellia sinensis como agente reductor. Para la preparación de los biocompositos primero se llevó a cabo ... -
Conventional and inverse elastocaloric effect in Ni-Fe-Ga and Ni-Mn-Sn ribbons
(Elsevier, 2017-02)"Magnetic shape memory Ni55Fe16Ga29 and Ni50Mn40Sn10 melt spun ribbons have been characterized by thermomechanical and mechanical analysis. Martensitic transformation temperatures show an abnormal tendency to decline under ... -
GaN haeckelite single-layered nanostructures: monolayer and nanotubes
(2015-12)"Nowadays, III-V semiconductors are interesting candidate materials for the tailoring of two dimensional (2D) graphene-like structures. These new 2D materials have attracted profound interest opening the possibility to ... -
Understanding the ion-induced elongation of silver nanoparticles embedded in silica
(2017-04)"In this work we have studied the elongation of silver nanoparticles irradiated with 40 MeV Bromine ions by means of in situ optical measurements, transmission electron microscopy and molecular dynamics simulations. The ... -
Identification of individual and few layers of WS2 using Raman Spectroscopy
(2013-04)"The Raman scattering of single-and few-layered WS2 is studied as a function of the number of S-W-S layers and the excitation wavelength in the visible range (488, 514 and 647 nm). For the three excitation wavelengths used ... -
Novel hetero-layered materials with tunable direct band gaps by sandwiching different metal disulfides and diselenides
(2013-03)"Although bulk hexagonal phases of layered semiconducting transition metal dichalcogenides (STMD) such as MoS2, WS2, WSe2 and MoSe2 exhibit indirect band gaps, a mono-layer of STMD possesses a direct band gap which could ... -
Covalently bonded three-dimensional carbon nanotube solids via boron induced nanojunctions
(2012)"The establishment of covalent junctions between carbon nanotubes (CNTs) and the modification of their straight tubular morphology are two strategies needed to successfully synthesize nanotube-based three-dimensional (3D) ... -
Electron transport study on functionalized armchair graphene nanoribbons: DFT calculations
(2016)"Quantum transport studies are performed on doped and functionalized 8- and 11-armchair graphene nanoribbons (aGNRs) by means of density functional theory. Substitutional doping is performed by introducing boron, nitrogen, ... -
Microstructure and magnetocaloric effect of melt-spun Ni52Mn26Ga22 ribbon
(2012-04)"Microstructural features and magnetocaloric properties of Ni52Mn26Ga22 melt-spun ribbons were studied. Results show that there are four types of differently oriented variants of seven-layered modulated (7M) martensite at ... -
Expanded use of a fast photography technique to characterize laser-induced plasma plumes
(2014-06)"Expanded use of fast photography is proposed to characterize laser ablation plasma plumes by the analysis of a set of photographs by means of appropriate mathematical algorithms. The laser ablation plasma plumes studied ... -
New advances in magnetic nanostructures
(2007)"Some of the new developments on magnetic nanostructures are reviewed. The advances on the synthesis, characterization, and understanding of magnetic nanoclusters, magnetic nanowires and single molecule magnets are discussed. ... -
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 ... -
Effective photoreduction of a nitroaromatic environmental endocrine disruptor by AgNPs functionalized on nanocrystalline TiO2
(2015)"Unprecedented photoactivity of silver nanoparticles photodeposited on nanocrystalline TiO2 for the efficient reduction of 4-nitrophenol at room temperature is reported. The use of Na2SO3 as a harmless scavenger agent for ... -
Bioadsorción de plomo (II) presente en solución acuosa sobre residuos de fibras naturales procedentes de la industria ixtlera (Agave lechuguilla Torr. y Yucca carnerosana (TREL.) MCKELVEY)
(2017)"El plomo ha sido reconocido como uno de los metales más tóxicos por su efecto negativo sobre el ambiente. En el presente trabajo se evaluó el uso potencial de residuos de Agave lechuguilla Torr. (lechuguilla) y Yucca ... -
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 ... -
On the anisotropy in the HRTEM images of a decagonal quasicrystalline phase of the Al-Cu-Co-Si system
(2007)"Experimental evidence of an electrical and/or magnetic anisotropy was observed in the high resolution transmission electron microscope (HRTEM) images of a decagonal quasicrystalline (DQC) phase of the Al-Cu-Co-Si system. ...