Publicaciones Científicas Nanociencias y Materiales: Recent submissions
Now showing items 381-400 of 611
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Pure and doped boron nitride nanotubes
(2007-05)"More than ten years ago, it was suggested theoretically that boron nitride (BN) nanotubes could be produced. Soon after, various reports on their synthesis appeared and a new area of nanotube science was born. This review ... -
Hybridization vs. bond stretching isomerism in Ru(II) cyclometalated complexes of 2-phenylpyridine
(MDPI, 2012-01)"The phenomenon of formation of two isomers, yellow and orange, of the cyclometalated Ru(II) complex, [Ru(o-C6H4-py)(MeCN)4]+, was investigated by EELS spectroscopy and theoretical calculations. Both forms show very similar ... -
Enhanced tunneling through nonstationary barriers
(2007-11)"Quantum tunneling through a nonstationary barrier is studied analytically and by a direct numerical solution of Schrödinger equation. Both methods are in agreement and say that the main features of the phenomenon can be ... -
Visualizing individual microtubules by bright field microscopy
(2010-11)"Microtubules are slender (similar to 25 nm diameter), filamentous polymers involved in cellular structure and organization. Individual microtubules have been visualized via fluorescence imaging of dye-labeled tubulin ... -
Temperature dependence of sensors based on silver-decorated nitrogen-doped multiwalled carbon nanotubes
(2016)"Vapor sensors are easily fabricated onto alumina substrates using foils of silver-decorated nitrogen-doped multiwalled carbon nanotubes (CNX-MWNTs-Ag) as active sensing material. The vapor sensors are tested using carbon ... -
Recrystallization of a Ti-45Ni-5Cu cold-worked shape memory alloy characterized by thermoelectric power and electrical properties
(2014)"The recrystallization of a cold-worked shape memory alloy (SMA) without R-phase transition, i.e. the Ti-45.0Ni-5.0Cu (% at.), has been studied by thermoelectric power (TEP) technique and electrical resistivity change (Dρ) ... -
Loop formation in graphitic nanoribbon edges using furnace heating or Joule heating
(2009-07)"Here the authors report the use of either furnace heating or Joule heating to pacify the exposed graphene edges by loop formation in a novel graphitic nanoribbon material, grown by chemical vapor deposition. The edge ... -
Effect of the thickness of insulator polymeric films on the memory behavior: the case of the polymethylmethacrylate and the polystyrene
(2011)"The effect of thickness variation on the memory behavior of the polymethylmethacrylate-(PMMA)-based devices has been investigated. The PMMA film thicknesses have been varied between 5 to 300 nm, and we have found that the ... -
Microstructure and composition design of magnetic Ni-Mn-Sn Co-sputter deposited films
(2015)"In this work, we study the effect of the substrate temperature (ST) during sputter-deposition as well as co-sputtering deposition on the fabrication of nanostructured Ni-Mn-Sn thin films. Sputtered films show Mn losses ... -
Magnetic structure and magneto-volume anomalies in Er(2)Fe(17) compound
(2011)"Neutron powder diffraction shows that the intermetallic Er(2)Fe(17) compound with hexagonal crystal structure has a ferrimagnetic ground state (T(C) = 303 K). At T = 5 K the magnetic moments of Fe sublattice (mu similar ... -
Magnetic and electrical properties of nitrogen-doped multiwall carbon nanotubes fabricated by a modified chemical vapor deposition method
(2015)"Chemical vapor deposition (CVD) is a preferential method to fabricate carbon nanotubes (CNTs). Several changes have been proposed to obtain improved CNTs. In this work we have fabricated nitrogen-doped multiwall carbon ... -
Cement pastes and mortars containing nitrogen-doped and oxygen-functionalized multiwalled carbon nanotubes
(Hindawi, 2016)"Cement pastes and mortars based on ordinary Portland cement containing nitrogen-doped multiwalled carbon nanotubes (MWCNT-Nx) or oxygen-functionalized multiwalled carbon nanotubes (MWCNT-Ox) are investigated. To incorporate ... -
Controllable biosynthesis of small silver nanoparticles using fungal extract
(2016-04)"The search for reliable and eco-friendly methods for the production of nanoscale materials is an important aspect of nanotechnology. Silver nanoparticles (AgNPs) are of special interest because of their antimicrobial ... -
Interplay between the magnetic and magneto-transport properties of 3D interconnected nanowire networks
(2016-07)"We have explored the interplay between the magnetic and magneto-transport properties of 3D interconnected nanowire networks made of various magnetic metals by electrodeposition into nanoporous membranes with crossed ... -
Platinum nanoclusters in silica: Photoluminescent properties and their application for enhancing the emission of silicon nanocrystals in an integrated configuration
(2016-09)"We studied photoluminescence of ion implanted platinum nanoclusters embedded in silica. Pt ions were implanted at 2 MeV and the Pt nanoclusters were then nucleated by thermal treatment under either argon, air, or a reducing ... -
Dibenzothiophene adsorption at boron doped carbon nanoribbons studied within density functional theory
(2015-07)"The adsorption of dibenzothiophene (DBT) on bare and boron-doped armchair carbon nanoribbons (ACNRs) is being investigated in the framework of the density functional theory by implementing periodic boundary conditions ... -
Near UV-blue excitable green-emitting nanocrystalline oxide
(Hindawi, 2011)"Green-emitting Eu-activated powders were produced by a two-stage method consisting of pressure-assisted combustion synthesis and postannealing in ammonia. The as-synthesized powders exhibited a red photoluminescence (PL) ... -
Magnetic entropy table-like shape in RNi2 composites for cryogenic refrigeration
(2015-05)"We have investigated the magnetocaloric (MC) effect in a two-phase composite based on melt-spun ribbons of the intermetallic DyNi2 and TbNi2 Laves phases. The temperature dependence of the isothermal magnetic entropy ... -
Magnetocaloric properties of rapidly solidified Dy3Co alloy ribbons
(2015-05)"The magnetic and magnetocaloric (MC) properties of melt-spun ribbons of the Dy3Co intermetallic compound were investigated. Samples were fabricated in an Ar environment using a homemade melt spinner system at a linear ... -
High-magnetic field characterization of magnetocaloric effect in FeZrB(Cu) amorphous ribbons
(2015-05)"The magnetic and magnetocaloric properties of a series of Fe-rich FeZrB(Cu) amorphous ribbons were investigated under magnetic field values up to mu H-0 of 8 T. A correlation between the saturation magnetization and the ...