• Quantum antireflection temporal coatings: quantum state frequency shifting and inhibited thermal noise amplification 

  Liberal Olleta, Íñigo  ; Vázquez Lozano, Juan Enrique; Pacheco-Peña, Víctor   (wiley, 2023)   Artículo / Artikulua  

  The quantum optical response of antireflection temporal coatings (ATCs), that is, matching temporal layers that suppress the generation of backward waves in temporal boundaries, is investigated. The results reveal that ...

• Mode transition during deposition of nanoscale ITO coatings on tilted fiber Bragg gratings 

  Imas González, José Javier  ; Albert, Jacques; Del Villar, Ignacio  ; Ozcariz Celaya, Aritz  ; Ruiz Zamarreño, Carlos  ; Matías Maestro, Ignacio   (Optica Publishing Group, 2022)   Contribución a congreso / Biltzarrerako ekarpena  

  The mode transition phenomenon is experimentally demonstrated in tilted fiber Bragg gratings (TFBG) through the deposition of an indium tin oxide (ITO) thin film employing a DC sputtering machine.

• Ammonia gas optical sensor based on lossy mode resonances 

  Armas, Dayron; Zubiate Orzanco, Pablo  ; Ruiz Zamarreño, Carlos  ; Matías Maestro, Ignacio   (IEEE, 2023)   Artículo / Artikulua  

  This letter presents the fabrication and characterization of an ammonia (NH 3) gas optical sensor based on lossy mode resonances (LMRs). A chromium (III) oxide (Cr 2 O 3) thin film deposited onto a planar waveguide was ...

• Onset of irreversible reactions in overcharging lithium-ion cells: an experimental and modeling approach 

  Irujo Izcue, Elisa; Berrueta Irigoyen, Alberto  ; Lalinde Sainz, Iñaki; Arza, Joseba; Sanchis Gúrpide, Pablo  ; Ursúa Rubio, Alfredo   (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  

  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 ...

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

  Lalinde Sainz, Iñaki; Berrueta Irigoyen, Alberto  ; Soto Cabria, Adrián  ; Arza, Joseba; Sanchis Gúrpide, Pablo  ; Ursúa Rubio, Alfredo   (IEEE, 2023)   Contribución a congreso / Biltzarrerako ekarpena  

  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 ...

• Monitoring structural transformations in metamagnetic shape memory alloys by non-contact GMI technology 

  Beato López, Juan Jesús  ; La Roca, Paulo Matías ; Algueta-Miguel, Jose M.  ; Garayo Urabayen, Eneko  ; Sánchez-Alarcos Gómez, Vicente  ; Recarte Callado, Vicente  ; Gómez Polo, Cristina  ; Pérez de Landazábal Berganzo, José Ignacio   (IOP Publishing, 2023)   Artículo / Artikulua

  Different applications based on metamagnetic shape memory alloy (MSMA) require monitoring the evolution of the martensitic transformation (MT) to optimize the actuation mechanism. To avoid interaction with the active ...

• An enhanced approach to virtually increase quasi-stationarity regions within geometric channel models for vehicular communications 

  Rodríguez Corbo, Fidel Alejandro; Celaya Echarri, Mikel; Shubair, Raed M.; Falcone Lanas, Francisco  ; Azpilicueta Fernández de las Heras, Leyre   (IEEE, 2023)   Artículo / Artikulua  

  Vehicular communication channels are intrinsically non-stationary, as they present high mobility and abundant dynamic scatterers. Quasi-stationary regions can assess the degree of non-stationarity within a determined ...

• Highly sensitive sensor for measuring material thermal expansion using a ring laser 

  Díaz Lucas, Silvia  ; Fuentes Lorenzo, Omar ; Torres Betancourt, Angie Tatiana; Corres Sanz, Jesús María  ; Matías Maestro, Ignacio   (IEEE, 2023)   Artículo / Artikulua  

  A new thermal expansion sensor is presented in this letter. It combines an interferometric fiber sensor and an erbium-doped fiber ring laser as the light source. The sensor consists of a combination of single-mode, ...

• Planar-waveguide-lmr-based sensors: engineering the depth of characteristic curves 

  Shrivastav, Anand M.; Del Villar, Ignacio  ; Ascorbe Muruzabal, Joaquín  ; Corres Sanz, Jesús María  ; Matías Maestro, Ignacio   (IEEE, 2023)   Artículo / Artikulua  

  Lossy mode resonance (LMR)-based sensors have been proven as one of the exponentially growing research fields since the last decade. These sensors have demonstrated their capabilities in the detection of several physical, ...

• All-fiber ellipsometer for nanoscale dielectric coatings 

  Imas González, José Javier  ; Matías Maestro, Ignacio  ; Del Villar, Ignacio  ; Ozcariz Celaya, Aritz  ; Ruiz Zamarreño, Carlos  ; Albert, Jacques (Chinese Academy of Sciences, 2023)   Artículo / Artikulua  

  Multiple mode resonance shifts in tilted fiber Bragg gratings (TFBGs) are used to simultaneously measure the thickness and the refractive index of TiO2 thin films formed by Atomic Layer Deposition (ALD) on optical fibers. ...

• UV light detection with side polished CYTOP fiber 

  Ayechu Abendaño, Ada; Santano, Desiree  ; López Vargas, Juan David; Matías Maestro, Ignacio  ; Del Villar, Ignacio   (IEEE, 2023)   Artículo / Artikulua  

  Cyclic transparent optical polymer (CYTOP) fiber, used mainly in strain detection and refractive index characterization of liquids, can be polished for the detection of ultraviolet (UV) light radiation. The study investigates ...

• Electrochemical lossy mode resonance for the detection of manganese ions 

  Domínguez Rodríguez, Ismel  ; Corres Sanz, Jesús María  ; Del Villar, Ignacio  ; Mozo, Juan D.; Simerova, Radka; Sezemsky, Petr; Stranak, Vitezslav; Śmietana, Mateusz; Matías Maestro, Ignacio   (Elsevier, 2023)   Artículo / Artikulua  

  In this work we propose electrochemical lossy mode resonance (eLMR) as a powerful method for the detection of manganese (Mn) ions. The sensor is based on a simple planar waveguide (sodasingle bondlime glass coverslip) ...

• LMR-based optical sensor for ethylene detection at visible and mid-infrared regions 

  Gallego Martínez, Elieser Ernesto; Hualde Otamendi, Mikel; Ruiz Zamarreño, Carlos  ; Matías Maestro, Ignacio   (IEEE, 2023)   Artículo / Artikulua  

  Ethylene monitoring has long been a method of controlling the ripening of climacteric fruits, but it turns out that this gas is an important biomarker in biomedical applications. This work presents an optical gas sensor ...

• Low-cost online monitoring system for the etching process in fiber optic sensors by computer vision 

  Rodríguez Rodríguez, Wenceslao Eduardo; Puente-Sujo, Jesús Abraham; Rodríguez Rodríguez, Adolfo Josué; Matías Maestro, Ignacio  ; Vargas Requena, Dávid Tomás; García-Garza, Luis Antonio (MDPI, 2023)   Artículo / Artikulua  

  The present research exposes a novel methodology to manufacture fiber optic sensors following the etching process by Hydrofluoric Acid deposition through a real-time monitoring diameter measurement by computer vision. ...

• Perspective chapter: thermal runaway in lithium-ion batteries 

  Lalinde Sainz, Iñaki; Berrueta Irigoyen, Alberto  ; Valera, Juan José; Arza, Joseba; Sanchis Gúrpide, Pablo  ; Ursúa Rubio, Alfredo   (IntechOpen, 2022)   Capítulo de libro / Liburuen kapitulua  

  Lithium-ion batteries (LIBs) are becoming well established as a key component in the integration of renewable energies and in the development of electric vehicles. Nevertheless, they have a narrow safe operating area with ...

• Association of intrinsic capacity with incidence and mortality of cardiovascular disease: prospective study in UK Biobank 

  Ramírez Vélez, Robinson; Iriarte-Fernández, María; Santafé Rodrigo, Guzmán  ; Malanda Trigueros, Armando  ; Beard, John R.; García Hermoso, Antonio; Izquierdo Redín, Mikel (Wiley, 2023)   Artículo / Artikulua  

  Background: The World Health Organization proposed the concept of intrinsic capacity (IC; the composite of all the physical and mental capacities of the individual) as central for healthy ageing. However, little research ...

• Fiber-optic brillouin distributed sensors: from dynamic to long-range measurements 

  Loayssa Lara, Alayn; Urricelqui Polvorinos, Javier  ; Iribas Pardo, Haritz  ; Mompó Roselló, Juan José ; Mariñelarena Ollacarizqueta, Jon   (CRC Press, 2018)   Capítulo de libro / Liburuen kapitulua  

  This chapter focuses on Brillouin optical time-domain analysis (BOTDA) sensors because they are the most successful Brillouin distributed sensors (BDS) type in terms of performance and practical applications. Distributed ...

• Distributed strain sensing with large dynamic range based on two-wavelength phase-sensitive OTDR 

  Piñeiro Ben, Enrique; Sagüés García, Mikel  ; Mompó Roselló, Juan José ; Eyal, Avishay; Loayssa Lara, Alayn (Optica Publishing Group, 2020)   Contribución a congreso / Biltzarrerako ekarpena  

  We demonstrate the use of two-wavelengths to enhance the dynamic range in phase-sensitive OTDR vibration sensors. The system overcomes the phase wrapping con- strains by the synthesis of an equivalent wavelength measurement.

• Selective harmonic mitigation: limitations of classical control strategies and benefits of model predictive control 

  Rosado Galparsoro, Leyre  ; Samanes Pascual, Javier  ; Gubía Villabona, Eugenio  ; López Taberna, Jesús   (IEEE, 2023)   Artículo / Artikulua  

  Selective harmonic mitigation pulsewidth modulation (SHMPWM) combined with model predictive control (MPC) is a promising approach for grid-connected power converters. SHMPWM can guarantee grid code compliance in steady ...

• Zero-loss switching in LLC resonant converters under discontinuous conduction mode: analysis and design methodology 

  Elizondo Martínez, David  ; Barrios Rípodas, Ernesto  ; Larequi, Íñigo; Ursúa Rubio, Alfredo  ; Sanchis Gúrpide, Pablo   (IEEE, 2023)   Artículo / Artikulua  

  Many thriving applications where isolation is required, such as LED drivers, traction and EV fast charging, implement LLC resonant converters, particularly when voltage regulation is not required or an additional ...

View more