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Affichage de 41 à 50 sur 16457

Article dans une revue

Improving the efficiency and stability of solar cells based on the perovskite material CH3NH3Pb(I1-yCly)3

Kacim Hadjadj, Abdelkader Aissat, Madani Mohamed Alaa Edine, Samuel Dupont

In this paper, the physical and optical properties of the perovskite material CH3NH3Pb(I1-yCly)3 have been modeled, simulated, and optimized to enhance the efficiency and stability of the proposed solar cell. First, the effect of y on the Eg and absorption coefficient at room temperature was...

Solar Energy, 2026, 316, pp.114870. ⟨10.1016/j.solener.2026.114870⟩. ⟨hal-05705526⟩

Article dans une revue

Colocalized photonic and phononic topological edge states in silicon membrane structures

Nouh Krai, Gaëtan Lévêque, Bahram Djafari-Rouhani, Yan Pennec

Topological wave transport has become an important area of research in photonic and phononic systems, providing new insights into wave propagation and enabling promising technological applications. Although photons and phonons share common features in periodic media, they are fundamentally...

Physical Review Applied, 2026, 26 (2), pp.024071. ⟨10.1103/s457-7wbk⟩. ⟨hal-05742883⟩

Article dans une revue

Assessment of AlGaN channel high-electron mobility transistors on silicon for high-temperature power electronics

Julien Bassaler, Jash Mehta, Stéphanie Rennesson, Fabrice Semond, Sylvie Contreras, Julien Pernot, Yvon Cordier, Farid Medjdoub, Philippe Ferrandis

Wide and ultrawide bandgap semiconductors present novel opportunities for advancing power electronics, particularly in domains where high-voltage operation and elevated temperature stability are required. In this context, AlGaN/AlGaN heterostructures emerge as promising candidates due to their...

Applied Physics Letters, 2026, 129 (8), pp.083506. ⟨10.1063/5.0326014⟩. ⟨hal-05742914⟩

Article dans une revue

Prediction of High-Performance Donor–Acceptor Pairs for Organic Photovoltaics with Machine Learning

Esther Mbina, Bruno Grandidier, Kekeli N’konou

<div xmlns="http://www.tei-c.org/ns/1.0"><p>Organic solar cells are widely recognized for their flexibility, light weight and semitransparency, all relevant for niche applications. A significant challenge in their development lies in the accurate prediction of their power...

Solar, 2026, 6, ⟨10.3390/solar6040051⟩. ⟨hal-05737593⟩

Article dans une revue

Chamfer-engineered microcantilever probes for controlled electrical contact formation

Steve Arscott

<div><p>In miniature silicon-based microcantilever probes used for high-frequency on-wafer electrical measurements, microfabrication processes such as etching can produce sharp probe-tip edges and poorly controlled contacting geometries. During electrical contact formation, such...

Engineering Research Express, 2026, 8, pp.155353. ⟨10.1088/2631-8695/ae9511⟩. ⟨hal-05729816⟩

Article dans une revue

Visible-Light-Driven Porphyrin/ZnO Nanohybrids for Ultrasensitive Room-Temperature Triethylamine Sensing

van Duy Lai, Thi Nguyet To, Valerio Allegra, Roberto Paolesse, Gabriele Magna, Franco Biasioli, Matteo Tonezzer, Alexandro Catini, Corrado Di Natale

Abstract Real-time monitoring of toxic triethylamine (TEA) at room temperature remains a significant challenge for metal oxide chemiresistors due to their typically high-power consumption and thermal requirements. This work presents a highly responsive, visible-light-activated gas sensor based on...

ACS Applied Nano Materials, 2026, 9 (33), pp.16061-16074. ⟨10.1021/acsanm.6c02958⟩. ⟨hal-05724786⟩

Article dans une revue

Nanoscale capacitive tuning of three dimensional terahertz meta-atoms

Usama Iqbal, Dmytro B. But, Théo Hannotte, Peretti Romain, Alexis Jouan, Cheryl Feuillet-Palma, Yanko Todorov

We report terahertz (THz) meta-atom resonators whose resonance can be tuned solely by varying the geometry of nanoscale capacitive elements while keeping the geometry of the inductive loop fixed. The capacitive parts employ a metal–dielectric–metal architecture with subwavelength dimensions,...

Optics Express, 2026, 34 (16), pp.30442. ⟨10.1364/OE.605013⟩. ⟨hal-05734638⟩

Article dans une revue

Vibrational transportation of deformable axisymmetric particles

Marina Terzi, Vladislav Aleshin, Jules Ghesquiere, Vincent Tournat

A particle on a substrate supporting a surface acoustic wave can experience horizontal drift excited by the dry friction force. The effect is referred to as vibrational transportation, or as a surface acoustic wave motor, and is used in a number of industrial applications. A traditional theory of...

Physical Review E , 2026, 114 (2), pp.025502. ⟨10.1103/l37t-1qtp⟩. ⟨hal-05725187⟩

Article dans une revue

Measurement of the electrical conductivity of aqueous metal chloride solutions using a phononic crystal sensor

Fares Kanouni, Mosbah Daamouche, Ahmed Mehaney, Mahdi Rahmani, Bouras Ilyas, Hussein Elsayed, Bahram Djafari-Rouhani

Abstract This work proposes a novel approach for the measurement of electrical conductivity in aqueous solutions of transition metal chlorides, specifically CuCl 2 –water, FeCl 3 –water, and NiCl 2 –water using a phononic–fluidic sensor. Indeed, it establishes a direct correlation between...

Journal of Physics D: Applied Physics, 2026, 59 (31), pp.315304. ⟨10.1088/1361-6463/ae8ddf⟩. ⟨hal-05724996⟩

Communication dans un congrès

Extraction of Defects Scattering Properties from Reverberating Coda Waves

Elie Farha, Lynda Chehami, Emmanuel Moulin, Nikolay Smagin

<div><p>In conventional non-destructive testing (NDT), only the first wavepackets are taken into account in most methods; whereas the reverberation part in the signals (coda) is usually ignored. In this article, we demonstrate the possibility of extracting useful information from the...

12th European Workshop on Structural Health Monitoring (EWSHM 2026), COFREND, Jul 2026, Toulouse, France. ⟨10.58286/34029⟩. ⟨hal-05725090⟩