• Temperature indicators and overtemperature detection in lithium-ion batteries based on electrochemical impedance spectroscopy 

      Lalinde Sainz, Iñaki; Berrueta Irigoyen, Alberto Upna Orcid; Soto Cabria, Adrián Upna Orcid; Arza, Joseba; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Lithium-ion batteries are the leading technology for energy storage systems due to their attractive advantages. However, the safety of lithium-ion batteries is a major concern, as their operating conditions are limited in ...
    • Onset of irreversible reactions in overcharging lithium-ion cells: an experimental and modeling approach 

      Irujo Izcue, Elisa; Berrueta Irigoyen, Alberto Upna Orcid; Lalinde Sainz, Iñaki; Arza, Joseba; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Lithium-ion batteries are energy storage systems used in an increasing number of applications. Due to their flammable materials, their use entails risks of fire and explosion. The study of the abuse operation of these ...
    • Building global competencies: a strategic approach to internationalization of engineering education 

      Berrueta Irigoyen, Alberto Upna Orcid; Samanes Pascual, Javier Upna Orcid; Parra Laita, Íñigo de la Upna Orcid; Goicoechea Fernández, Javier Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid (Eindhoven University of Technology and Fontys University of Applied Sciences, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      International mobility is an essential aspect of undergraduate education that enables students to acquire the necessary competences required by the European Higher Education Area (EHEA). However, small universities such ...
    • A technology review and field testing of a soil water quality monitoring system 

      Afridi, Waqas A. K.; Akhter, Fowzia; Vitoria Pascual, Ignacio Upna Orcid; Mukhopadhyay, Subhas C. (Springer, 2023)   Contribución a congreso / Biltzarrerako ekarpena
      Soil water quality is one of the most influential factors in ensuring the productivity of agricultural farms. Soil water quality and soil quality are hugely dependent on each other. Hence, it is essential to have a clear ...
    • Asymmetrical firing angle modulation for 12-pulse thyristor rectifiers supplying high-power electrolyzers 

      Iribarren Zabalegui, Álvaro Upna; Barrios Rípodas, Ernesto Upna Orcid; Elizondo Martínez, David Upna Orcid; Sanchis Gúrpide, Pablo Upna Orcid; Ursúa Rubio, Alfredo Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This paper presents an asymmetrical firing angle modulation strategy for 12-pulse thyristor rectifiers aimed at supplying high-power electrolyzers, which allows to reduce the size of the passive filter and the static ...
    • Integrated platform for microfluidics based cell culture applications 

      Dudala, Sohan; Dubey, Satish K.; Javed, Arshad; Ozcariz Celaya, Aritz Upna Orcid; Matías Maestro, Ignacio Upna Orcid; Goel, Sanket (Springer, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The ongoing developments in the field of microfluidics-based cell culture have led to a significant interest in systems for their visualization and control. The existing cell culture systems are limiting due to cost, ...
    • A novel ku-band circularly-polarized horn antenna based on a ridged wall 

      Marzo Oyarbide, Andoni; Teberio Berdún, Fernando Upna Orcid; Teniente Vallinas, Jorge Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this paper, a novel wideband (31.5 % bandwidth) circularly-polarized antenna based on a ridged wall is presented. A pair of ridges on the inner wall of the horn serves as an inbuilt polarizer, which can generate left-hand ...
    • Suppressing open stopband for terahertz periodic microstrip leaky-wave antennas 

      Haddad, Thomas; Biurrun Quel, Carlos Upna Orcid; Lu, Peng; Kaya, Hacer; Mohammad, Israa; Stöhr, Andreas (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      This paper reports on a periodic microstrip Leaky-wave antenna (LWA). The open stopband issue is suppressed by altering the unit cell using a matching stub. The developed LWA is based on a grounded InP-substrate of 50 ...
    • Multi-sensing platform design with a grating-based nanostructure on a coverslip substrate 

      Imas González, José Javier Upna Orcid; Del Villar, Ignacio Upna Orcid; Ruiz Zamarreño, Carlos Upna Orcid; Mukhopadhyay, Subhas C.; Matías Maestro, Ignacio Upna Orcid (Springer, 2023)   Contribución a congreso / Biltzarrerako ekarpena
      Two different thin film designs with a grating pattern are simulated on a soda lime coverslip, which acts as optical waveguide, with the purpose of generating both a lossy mode resonance (LMR) in transmission and reflection ...
    • One-year analysis of road condition using FBG arrays 

      Corera Orzanco, Íñigo Upna Orcid; Pradas Martínez, Javier Upna; Leandro González, Daniel Upna Orcid; Bravo Acha, Mikel Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid (SPIE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work, it is presented an analysis of FBG arrays installed in a public road. The arrays were installed in a newly paved urban road and were monitored for more than one year. The study evidences the permanent deformation ...
    • Fiber optic mirror fabrication using general-purpose metallic pigments 

      Jaso Gallego, Isabel; Mejia-Olivo, Edison; Bravo Acha, Mikel Upna Orcid; Leandro González, Daniel Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid (SPIE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work, the potential of using general-purpose paints to fabricate highly reflective, low-cost optical mirrors is evaluated. The study shows that high-reflectivity mirrors can be created in standard single-mode fiber ...
    • Women, Science and Technology Chair—Promoting women’s careers in stem fields 

      Pérez Artieda, Miren Gurutze Upna Orcid; Gómez Fernández, Marisol Upna Orcid; Aranguren Garacochea, Patricia Upna Orcid; Barrenechea Tartas, Edurne Upna Orcid; Catalán Ros, Leyre Upna Orcid; Díaz Lucas, Silvia Upna Orcid; Jurío Munárriz, Aránzazu Upna Orcid; Martínez Ramírez, Alicia Upna Orcid; Millor Muruzábal, Nora Upna Orcid; Ortiz Nicolás, Amalia; San Martín Biurrun, Idoia Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      The Chair of Women, Science and Technology of the Universidad Pública de Navarra (UPNA) aims to increase the participation of women in the fields of science and technology. Scientific culture and dissemination are the main ...
    • Multicore fiber sensors for strain measurement towards traffic monitoring 

      Sánchez González, Arturo; Pradas Martínez, Javier Upna; Corera Orzanco, Íñigo Upna Orcid; Bravo Acha, Mikel Upna Orcid; Leandro González, Daniel Upna Orcid; Dauliat, Romain; Jamier, Raphael; Roy, Philippe; Pérez Herrera, Rosa Ana Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid (SPIE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work, two new interferometric sensors based on multicore optical fibers for the measurement of strain with the ultimate goal of traffic monitoring are presented. The operating principle of each sensor relied on ...
    • Erbium-doped fiber ring cavity for the measurement of refractive index variations 

      Pérez Herrera, Rosa Ana Upna Orcid; Soares, Liliana; Novais, Susana; Frazão, Orlando; Silva, Susana (SPIE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      In this work, an erbium-doped fiber ring cavity based on a 3dB optical coupler for refractive index measurements is presented and experimentally verified. This interrogation system, based on a 1 x 2 optical coupler, uses ...
    • A new ABS conductive material to develop fully 3D-printed patch antennas 

      Jiménez Peña, Javier; Irigoyen, Joseba; Aresti Bartolomé, Maite; Ederra Urzainqui, Íñigo Upna Orcid; Bravo Larrea, Javier Upna Orcid; Iriarte Galarregui, Juan Carlos Upna Orcid (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Additive manufacturing technology is rapidly overcoming some of its initial limitations and, thus, creating a very useful engineering option for prototyping complex geometries for a wide range of electronic devices. Based ...
    • Measurement of paracetamol concentration using a fiber laser system 

      Soares, Liliana; Pérez Herrera, Rosa Ana Upna Orcid; Novais, Susana; Ferreira, António; Frazão, Orlando; Silva, Susana (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A linear fiber laser system for measurements of paracetamol concentration is experimentally demonstrated. The cavity is based on a fiber loop mirror and an FBG centered at 1567.8 nm. The sensing head corresponds to a ...
    • Aluminum coated fiber optic sensor for enhancing flow rate measurement 

      Rodríguez Rodríguez, Armando; Urroz Unzueta, José Carlos Upna Orcid; Diéguez Elizondo, Pedro Upna Orcid; Bravo Acha, Mikel Upna Orcid; López-Amo Sáinz, Manuel Upna Orcid; López Rodríguez, José Javier Upna Orcid (SPIE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A water flow and velocity aluminum-coated Fiber Bragg Grating sensor system for open channels was designed, simulated and tested. The sensing head was designed, ruggedized and customized to measure velocities at ...
    • Integración de múltiples stubs en filtros de saltos de impedancias de alta selectividad 

      Gómez Laso, Miguel Ángel Upna Orcid; Sami, Abdul Upna; Lopetegui Beregaña, José María; Martin Iglesias, Petronilo; Álvarez Botero, Germán Andrés; Pons Abenza, A; Arregui Padilla, Iván Upna Orcid (URSIUniversidad de Extremadura, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Rectangular waveguide commensurate-line stepped-impedance bandpass filters have been shown to have an increased fabrication robustness using conventional CNC milling. In this paper, their frequency response is improved by ...
    • Diseño robusto de filtros paso-banda de banda W en tecnología Gap Waveguide impresos en 3D 

      Santiago Arriazu, David; Tamayo-Domínguez, Adrián; Gómez Laso, Miguel Ángel Upna Orcid; Lopetegui Beregaña, José María; Fernández-González, José Manuel; Martínez, Ramón; Arregui Padilla, Iván Upna Orcid (URSIUniversidad de Extremadura, 2023)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      A 3D-printed bandpass filter for the W-band is proposed in this work. The use of the higher-order TE10n modes in groove gap waveguide (GGW) technology is analyzed and shown to ease the manufacturing requirements. The design ...
    • Ordered titanium dioxide nanotubes for lossy-mode resonance-based humidity sensing 

      Pitula, Emil; Kouao, Dujearic-Stephane; Grochowska, Katarzyna; Sezemsky, Petr; Simerova, Radka; Domínguez Rodríguez, Ismel Upna Orcid; Siuzdak, Katarzyna; Del Villar, Ignacio Upna Orcid; Stranak, Vitezslav; Smietana, Mateusz (Optica Publishing Group, 2022)   Contribución a congreso / Biltzarrerako ekarpena  OpenAccess
      Ordered titanium dioxide nanotubes on indium tin oxide as a structure supporting lossy-mode resonance is reported. Capability for application of the structure for optical humidity sensing is shown as an application example.

      El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
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