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Thèse

Passive Monitoring Approaches for Rail Structural Health Assessment, Approches de surveillance passive pour l’évaluation de l’état de santé structurel des rails

Elissa Akiki

Structural Health Monitoring (SHM) based on ultrasonic guided waves has emerged as a promising solution for the continuous monitoring of railway infrastructures. However, most conventional SHM systems rely on active interrogation schemes requiring external excitation sources, synchronization..., La surveillance de l’état structural (SHM) basée sur les ondes guidées ultrasonores constitue une approche prometteuse pour le suivi continu des infrastructures ferroviaires. Toutefois, les systèmes conventionnels de SHM reposent majoritairement sur des méthodes actives nécessitant des sources d’...

Mechanics of materials [physics.class-ph]. Université Polytechnique Hauts de France; Institut national des sciences appliquées Hauts-de-France, 2026. English. ⟨NNT : 2026UPHF0032⟩. ⟨tel-05666219⟩

Thèse

Localisation interférométrique au sein d’un réseau de capteurs évoluant dans un environnement industriel confiné, Interferometric location within a sensor network operating in a confined industrial environment

Thomas Steve NKOLO BEKONO

La localisation précise d’objets ou des personnes représente un enjeu important dans le contexte de l’usine du futur. Avoir une information de position fiable permet d’optimiser les flux logistiques, de faciliter la coordination des systèmes automatisés, d’améliorer la traçabilité des équipements..., The precise localisation of objects or people is a key challenge in the context of the factory of the future. Reliable position data enables the optimisation of logistics flows, facilitates the coordination of automated systems, improves the traceability of equipment and enhances operator safety....

Electronique. Université Polytechnique Hauts de France; Institut national des sciences appliquées Hauts-de-France, 2026. Français. ⟨NNT : 2026UPHF0035⟩. ⟨tel-05666298⟩

Article dans une revue

N-polar AlGaN HEMTs on silicon for reduced contact resistance

A. Barbier-Cueil, J. Mehta, A. Pédèches, F. Medjdoub, F. Semond

Nitrogen-polar (N-polar) AlGaN-channel high electron mobility transistors (HEMTs) offer a promising pathway to overcome the limitations of equivalent metal-polar (M-polar) devices, particularly the high contact resistance associated with increased aluminum content. In this work, we report the...

Applied Physics Letters, 2026, 128 (26), ⟨10.1063/5.0329237⟩. ⟨hal-05678244⟩

Communication dans un congrès

Conceptual design and analysis of active micro-reservoirs for biomedical applications

Martyna Myszograj, Michal Rychlik, Sofiane Ghenna, Eric Cattan

Recent advances in microfabrication and smart materials have enabled the development of miniaturized drug-delivery systems with improved precision and controllability. Among these, active micro-reservoirs represent a promising approach for the on-demand storage and controlled release of therapeutic...

Natural Science Baltic Conference 2026, University of Gdansk, Jun 2026, Gdansk, Poland. ⟨hal-05680979⟩

Article dans une revue

Transversal at Ten – Historical and Historiographical Reflections from Within, Transversal at Ten

Raffaele Pisano

This commemorative contribution reflects on the intellectual trajectory and historiographical significance of Transversal since its foundation in 2016. Written from the perspective of a longstanding collaborator, Editorial Board member, Associate Editor, author, and Guest Editor, it situates the...

Transversal: International Journal for the Historiography of Science, 2026, 20, pp.1-10. ⟨10.24117/2526-2270.2026.i20.02⟩. ⟨hal-05616965⟩

Article dans une revue

Physics‐Enhanced Deep Learning Optimized Semitransparent Organic Photovoltaics for Building‐Integrated Sustainable Energy

Baozhong Deng, Xiaokai Zhang, Zhouyi Lu, Zhengnan Lin, Tuo Leng, Zixuan Liu, Ye Dai, Gaëtan Lévêque, Bruno Grandidier, Furong Zhu, Tao Xu

ABSTRACT Global energy challenges establish building‐integrated photovoltaics as a pivotal decarbonization frontier, where semitransparent organic photovoltaics (ST‐OPVs) represent a promising technology for simultaneous power generation and daylight transmission. However, their widespread..., Global energy challenges establish building-integrated photovoltaics as a pivotal decarbonization frontier, where semitransparent organic photovoltaics (ST-OPVs) represent a promising technology for simultaneous power generation and daylight transmission. However, their widespread application is...

Advanced Materials, 2026, ⟨10.1002/adma.73762⟩. ⟨hal-05674494⟩

Thèse

Contribution au développement de capteurs ultrasonores SAW sur base de substrats piézoélectriques de type vitrocéramique pour des mesures à haute température, Contribution to the development of SAW ultrasonic sensors based on glass-ceramic piezoelectric substrates for high-temperature measurements.

Oussama Zwein

Cette thèse s’inscrit dans le développement de capteurs ultrasonores à ondes acoustiques de surface (Surface Acoustic Wave, SAW) destinés aux environnements industriels sévères. Elle vise à démontrer la faisabilité de dispositifs SAW réalisés à partir de substrats vitrocéramiques polaires à base de..., This PhD thesis is part of the development of ultrasonic Surface Acoustic Wave (SAW) sensors intended for harsh industrial environments. It aims to demonstrate the feasibility of SAW devices fabricated on polar glass-ceramic substrates based on fresnoite (Sr₂TiSi₂O₈ – STS), capable of operating at...

Physique [physics]. Université Polytechnique Hauts-de-France; Cotutelle avec l'université "UMONS" (BELGIQUE), 2026. Français. ⟨NNT : ⟩. ⟨tel-05666266⟩