Browsing División de Nanociencias y Materiales by Title
Now showing items 128-147 of 528
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El desarrollo de la Física en San Luis Potosí Parte I: de la época colonial a la institucionalización de la física
(Sociedad Mexicana de Física, 2020) -
El meteorito Charcas y su impacto
(Sociedad Mexicana de Física, 2007) -
Elastocaloric and magnetocaloric effects in Ni-Mn-Sn(Cu) shape-memory alloy
(2013-02)"We have studied magnetocaloric and elastocaloric properties of a Ni-Mn-Sn(Cu) metamagnetic shape-memory alloy undergoing a magneto-structural transition (martensitic type) close to room temperature. Changes of entropy ... -
Elastocaloric effect in Ti-Ni shape-memory wires associated with the B2 ↔ B19' and B2 ↔ R structural transitions
(2016-02)"We have studied the elastocaloric properties of Ti-Ni shape-memory wires subjected to specific heat treatments to decouple the B2 <-> R transition from the B2 <-> B19' one. The entropy values at moderate stresses (similar ... -
Electrochemical and mechanical behavior in polycrystalline CoNi-Ga shape memory alloys
(2014)"Electrochemical behavior and microstructure was studied in polycrystalline Co38.3Ni32.1Ga29.6 alloy using the electrochemical technique of polarization curves in a medium of 3.5 wt % NaCl and 0.5M H2SO4. The importance ... -
Electromagnetic transmittance in alternating material-metamaterial layered structures
(2017)"Using the transfer matrix method we examine the parametric behavior of the transmittance of TE and TM electromagnetic plane waves propagating in frequency range which are far from the absorption bands of a periodic ... -
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, ... -
Electronic trasport and mechanical properties in nanostructures.
(2007)"El trabajo de investigacion doctoral se ha desarrollado sobre transporte electronico en moleculas organicas e inorganicas y sobre el estudio de propiedades mecanicas en nanoestructuras bajo presion. Para la primera parte ... -
Electrum, the gold–silver alloy, from the bulk scale to the nanoscale: synthesis, properties, and segregation rules
(American Chemical Society, 2016)"The alloy Au–Ag system is an important noble bimetallic phase, both historically (as “Electrum”) and now especially in nanotechnology, as it is applied in catalysis and nanomedicine. To comprehend the structural characteristics ... -
Energetics and the magnetic state of Mn2 adsorbed on Au(111): Dimer bond distance dependence
(Elsevier, 2016)"In this work we present a theoretical study of the adsorption Mn2 dimer on the Au(111) surface. Here we use the density functional theory to construct a map of adsorption energies, EA, of Mn2 on a Au(111) surface as a ... -
Enhanced magnetocaloric effect tuning efficiency in Ni-Mn-Sn alloy ribbons
(Elsevier B.V., 2017-11)"The present work was undertaken to investigate the effect of microstructure on the magnetic entropy change of Ni50Mn37Sn13 ribbon alloys. Unchanged sample composition and cell parameter of austenite allowed us to study ... -
Enhanced photocatalytic performance of zinc oxide nanostructures via photoirradiation hybridisation with graphene oxide for the degradation of triclosan under visible light: Synthesis, characterisation and mechanistic study
(Elsevier, 2018)"Modification of ZnO nanoparticles with graphene oxide (GO) was carried out, and the obtained hybrid photocatalyst was used for the photodegradation of triclosan (TCS), which is an endocrine disrupting compound. Three ... -
Enhanced refrigerant capacity and magnetic entropy flattening using a two-amorphous FeZrB(Cu) composite
(2011-12)"The temperature dependence of the isothermal magnetic entropy change, Delta S-M, and the magnetic field dependence of the refrigerant capacity, RC, have been investigated in a composite system xA + (1 - x) B, based on ... -
Enhanced refrigerant capacity in Gd-Al-Co microwires with a biphase nanocrystalline/amorphous structure
(2016-02)"A class of biphase nanocrystalline/amorphous Gd(50+5x)Al(30-5x)Co20 (x = 0, 1, 2) microwires fabricated directly by melt-extraction is reported. High resolution transmission electron microscopy and Fourier function transform ... -
Enhanced refrigerant capacity in two-phase nanocrystalline/amorphous NdPrFe17 melt-spun ribbons
(2014-05)"he magnetocaloric properties of NdPrFe17 melt-spun ribbons composed of nanocrystallites surrounded by an intergranular amorphous phase have been studied. The nanocomposite shows two successive second-order magnetic phase ... -
Enhanced thermal conductivity of carbon fiber/phenolic resin composites by the introduction of carbon nanotubes
(2007-02)"The authors report a significant enhancement in the thermal conductivity of a conventional carbon fiber/phenolic resin composite system when adding highly crystalline multiwalled carbon nanotubes. They demonstrate that ... -
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 ... -
Enhancement of entanglement using a tight-binding hamiltonian.
(2006)"Debido a la disminución del tamaño en los procesos de fabricación de microchips de computadora, se esta llegando a limites físicos donde efectos cuánticos pueden interferir en el desempeño de tales dispositivos. Por otra ... -
Enhancement of NOx photo-oxidation by Fe-doped TiO2 nanoparticles
(NRF, 2019)"Microwave hydrothermal-assisted sol-gel method was employed to synthesize the Fe doped TiO2 photocatalyst. Themorphological analysis suggests anatase phase nanoparticles of ~20 nm with an SBET area of 283.99 m2/g. The ... -
Enlarged sheet of ZnS(en)0.5 hybrid semiconductors with photocatalytic activity
(2015)"Sheets of ZnS(en)0.5 hybrid semiconductors were prepared by the precipitation method in an ethylenediamine–water solution and it was enlarged by varying the aging at a long period time. The characterization of the hybrid ...