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Fernández Sánchez, Paloma ; Díaz-Guerra Viejo, Carlos ; López García, María Luisa ; Urbieta Quiroga, Ana Irene ; Nogales Díaz, Emilio ; Arias Velasco, Marta ; Romero Izquierdo, Carlos ; Solís Fernández, Fernando ; Sotillo Buzarra, Belén | 2019-10-31El presente proyecto aborda dos aspectos muy importantes y estrechamente ligados a la adquisición de competencias básicas de cualquier titulación de grado actual y altamente demandadas por los empleadores: la adquisición de habilidades para desa[...]texto impreso
Urbieta Quiroga, Ana Irene ; Fernández Sánchez, Paloma ; Hardalo, C. ; Piqueras de Noriega, Javier ; Sekiguchi, T. | Elsevier Science SA | 2002-04-30Bulk ZnO single crystals grown by the hydrothermal (HTT) and alkali flux methods have been investigated by means of scanning tunnelling spectroscopy (STS) and time resolved cathodoluminescence (CL). Measurements were performed in the different c[...]texto impreso
Urbieta Quiroga, Ana Irene ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier ; Hardalov, C. ; Sekiguchi, T. | IOP publishing ltd | 2001-10-07Bulk ZnO single crystals grown by the hydrothermal and flux methods have been characterized by steady-state and time resolved cathodoluminescence measurements performed on the different crystalline faces. A shift of the peak near band edge towar[...]texto impreso
López Orozco, José Antonio ; Fernández Sánchez, Paloma ; Urbieta Quiroga, Ana Irene ; Hidalgo Alcalde, Pedro ; Besada Portas, Eva ; Garrido Díaz, Esther ; Solís Fernández, Fernando ; Pellejero Cuevas, Noelia | 2018-10-01Se propone la creación de un portal de servicios para facilitar la creación y el uso de herramientas de gamificación.texto impreso
Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier ; Urbieta Quiroga, Ana Irene ; Rebane, Y. T. ; Shrete, Y. | IOP publishing ltd | 1999-05The influence of defects, in particular the deformation-induced defects, on the luminescence of bulk ZnSe single crystals has been investigated by cathodoluminescence (CL) in the scanning electron microscope. Deformation has been found to cause [...]texto impreso
Alcaraz, Lorena ; Escudero, María Esther ; Alguacil, Francisco José ; Llorente, Irene ; Urbieta Quiroga, Ana Irene ; Fernández Sánchez, Paloma ; López, Félix Antonio | MDPI | 2019-10This paper describes the physicochemical study of the adsorption of dysprosium (Dy^(3+)) in aqueous solution onto two types of activated carbons synthesized from spent coffee ground. Potassium hydroxide (KOH)-activated carbon is a microporous ma[...]texto impreso
Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier ; Urbieta Quiroga, Ana Irene ; Rebane, Y. T. ; Shreter, Y. G. | Trans Tech-Scitec Publications LDT | 1998The electronic recombination properties of defects in ZnSe is a subject of interest related to the application of this material in optoelectronic devices operating in the blue-green range. In this work the influence of defects, in particular the[...]texto impreso
Bazta, Otman ; Urbieta Quiroga, Ana Irene ; Piqueras de Noriega, Javier ; Fernández Sánchez, Paloma ; Addou, M. ; Calvino, J.J. ; Hungría, A.B. | Elsevier Science SA | 2019-11-05Pure ZnO and ZnO: 2%Y:x%Li (x = 0, 3, 5 and 7 at.%) thin films have been successfully prepared onto glass substrates under optimized conditions by spray pyrolysis technique at 450 ºC and their suitability for the fabrication of efficient optoele[...]texto impreso
Ariza García, Rocío ; Sotillo Buzarra, Belén ; Pavón Martínez, Fernando ; Urbieta Quiroga, Ana Irene ; Fernández Sánchez, Paloma | MDPI | 2020-12-01The investigated materials have great potential for integrated optoelectronic devices. The possibility to integrate them into the same material as optical resonator and light guide opens the door to the fabrication of highly compact devices. The[...]texto impreso
Ramos Ramos, D.J. ; Sotillo Buzarra, Belén ; Urbieta Quiroga, Ana Irene ; Fernández Sánchez, Paloma | Institute of Electrical and Electronics Engineers (IEEE) | 2021-02-01Sensing behaviour of samples belonging to the system ZnO:CuO has been investigated. Samples with different proportions of ZnO and CuO have been sintered and exposed to a reducing agent as ethanol (C_2H_5OH). All the samples have been characteriz[...]texto impreso
López Quintás, Ignacio ; Rebollar, Esther ; Ávila Brande, David ; Izquierdo, Jesús G. ; Díaz-Guerra Viejo, Carlos ; Urbieta Quiroga, Ana Irene ; Castillejo, Marta ; Nalda, Rebeca de ; Martín, Margarita | MDPI | 2020-11Nanostructured thin films of Co-doped zinc sulfide were synthesized through femtosecond pulsed laser deposition. The scheme involved ablation of physically mixed Co and ZnS with pairs of ultrashort pulses separated in time in the 0-300 ps range.[...]texto impreso
Alcaraz Romo, Lorena ; Lopez Fernandez, Ana ; García Díaz, Irene ; Fernández Sánchez, Paloma ; Urbieta Quiroga, Ana Irene ; López, Félix A. | Royal Society of Chemistry | 2018-09-28A series of Zn/Mn binary oxides with different molar ratios (1.4-11) were synthesized via co-precipitation from a solution obtained through the acidic (HCl) leaching of a black mass originating from the mechanical recycling of spent alkaline and[...]texto impreso
Rodríguez Peña, Micaela ; Flores Carrasco, G. ; Urbieta Quiroga, Ana Irene ; Rabanal, M.E. ; Fernández Sánchez, Paloma | Elsevier | 2020-04-15ZnO:Ce structures have been obtained by a vapour-solid method. Different dopant concentrations have been used, and the incorporation of cerium in the crystalline structure of zinc oxide has been verified by means of Energy Dispersive Spectroscop[...]texto impreso
Urbieta Quiroga, Ana Irene ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier | Trans Tech Publications Ltd | 2008Sintering of a ZnO-MgO powder mixture under argon flow leads to the growth of elongated Mg doped ZnO structures such as stacks of nanoplates and rods with secondary nanowires in a comb-like arrangement. The nanoplates grow perpendicular to a cen[...]texto impreso
Urbieta Quiroga, Ana Irene ; Fernández Sánchez, Paloma ; Piqueras de Noriega, Javier | Amer Inst Physics | 2004-12-13Sintering CdSe powder under argon flow at temperatures in the range 800-900 degreesC produces the formation of needles on the sample surface. Bundles of parallel needles of a diameter of about 50 nm give rise to a domain-like appearance in the s[...]
