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Affichage de 2001 à 2010 sur 16092

Article dans une revue

Monitoring saltwater corrosion of steel using ultrasonic coda wave interferometry with temperature control

Maxime Farin, Emmanuel Moulin, Lynda Chehami, Farouk Benmeddour, Cyril Nicard, Pierre Campistron, Olivier Bréhault, Lucie Dupont

Assessing corrosion is crucial in the petrochemical and marine industries. Usual ultrasonic methods based on pulse-echo and guided waves to detect corrosion lack of precision and struggle in structures with a complex shape. In this paper, a complementary and sensitive ultrasonic method based on...

Ultrasonics, 2022, 124, pp.106753. ⟨10.1016/j.ultras.2022.106753⟩. ⟨hal-03673345⟩

Article dans une revue

Ultrasound WPC tomography of a nonlinear parameter

Yu. Pylnov, L. Krutyansky, V. Preobrazhensky, Philippe Pernod

A possibility of using a standard beam tomography procedure to reconstruct the two-dimensional distribution of the nonlinear parameter of a medium in ultrasonic systems with wave phase conjugation (WPC) is investigated. The mathematical model constructed for the confocal geometry of the ultrasonic...

Physics of Wave Phenomena, 2022, 30 (4), pp.270-276. ⟨10.3103/S1541308X22040070⟩. ⟨hal-03774789⟩

Article dans une revue

Analyzing the Mechanism of Zinc Oxide Nanowires Bending and Bundling Induced by Electron Beam under Scanning Electron Microscope Using Numerical and Simulation Analysis

Basma El Zein, Ali Elrashidi, El Hadj Dogheche, Ghassan Jabbour

The bending effect of self-catalyst zinc oxide nanowires on a photoconducting behavior has been investigated by in-situ scanning electron microscope method and interpreted by analytical modeling. Zinc oxide NWs tend to incline due to geometric instability and because of the piezoelectric properties...

Materials, 2022, 15 (15), pp.5358. ⟨10.3390/ma15155358⟩. ⟨hal-03752250⟩

Article dans une revue

Comprehensive model for ideal reverse leakage current components in Schottky barrier diodes tested in GaN-on-SiC samples

B. Orfao, G. Di Gioia, B. Vasallo, S. Pérez, J. Mateos, Yannick Roelens, E. Frayssinet, Y. Cordier, M. Zaknoune, T. González

A model to predict the ideal reverse leakage currents in Schottky barrier diodes, namely, thermionic emission and tunneling components, has been developed and tested by means of current–voltage–temperature measurements in GaN-on-SiC devices. The model addresses both current components and both...

Journal of Applied Physics, 2022, 132 (4), pp.044502. ⟨10.1063/5.0100426⟩. ⟨hal-03741441⟩

Article dans une revue

Growth and design strategies of organic dendritic networks

Giuseppe Ciccone, Matteo Cucchi, Yanfei Gao, Ankush Kumar, Lennart Maximilian Seifert, Anton Weissbach, Hsin Tseng, Hans Kleemann, Fabien Alibart, Karl Leo

Abstract A new paradigm of electronic devices with bio-inspired features is aiming to mimic the brain’s fundamental mechanisms to achieve recognition of very complex patterns and more efficient computational tasks. Networks of electropolymerized dendritic fibers are attracting much interest because...

Discover Materials, 2022, 2 (1), pp.7. ⟨10.1007/s43939-022-00028-0⟩. ⟨hal-04656305⟩

Article dans une revue

Imaging of THz photonic modes by scattering scanning near-field optical microscopy

L. Thomas, Theo Hannotte, Cristiane N. Santos, Benjamin Walter, Melanie Lavancier, Sophie Eliet, Marc Faucher, Jean-Francois Lampin, Romain Peretti

We investigated the near-field distribution associated to the photonic mode of terahertz photonic micro-resonators by scattering scanning near-field optical microscopy. Probing individual THz microresonators concentrating electric field is important for high-sensitivity chemical and biochemical...

ACS Applied Materials & Interfaces, 2022, 14 (28), pp.32608-32617. ⟨10.1021/acsami.2c01871⟩. ⟨hal-03608482⟩

Communication dans un congrès

Elastic wave propagation along a 1D chain of pillars

Rock Akiki, Laurent Carpentier, Adnane Noual, Bernard Bonello, Bahram Djafari-Rouhani, Yan Pennec

We theoretically investigate with the help of the finite element method the interaction between aluminum pillars erected on top of a silicon substrate in the low frequency range. We investigated the resonant modes of a finite linear chain of N pillars and demonstrate the propagation along the chain...

12th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META22, Jul 2022, Torremolinos, Spain. ⟨hal-04369107⟩

Communication dans un congrès

Phonon-Plasmon coupling in pillared phononic crystals mediated by surface acoustic waves

A. Noual, Rock Akiki, Gaëtan Lévêque, Yan Pennec, El Houssaine El Boudouti, Bahram Djafari-Rouhani

We study theoretically the phonon-plasmon interaction in a multilayered structure supporting metallic nano-pillars or ridges. The acoustic vibrations of the pillars, excited by means of an incident surface acoustic wave (Sezawa wave), interact with localized plasmons of metal-insulator-metal type....

12th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META22, Jul 2022, Torremolinos, Spain. ⟨hal-04369307⟩

Communication dans un congrès

Biosensor based on Phononic Crystals Supporting Bound States in the Continuum and Fano resonances

I. Quotane, M. Amrani, C. Ghouila-Houri, E. El Boudouti, L. Krutyanskiy, Bogdan Piwakowski, Philippe Pernod, Abdelkrim Talbi, Bahram Djafari-Rouhani

We study a one-dimensional phononic crystal (1D-PC) that provides a new biosensor platform based on bound states in the continuum (BICs) and Fano resonances. The structure consists of a triple solid-liquid-solid layer immersed in water, where epoxy is used as the solid layers and a mixture of water...

12th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META22, Jul 2022, Torremolinos, Spain. ⟨hal-04369163⟩

Communication dans un congrès

Triangular resonators in topological valley photonic crystals

Gaëtan Lévêque, A. Martínez, Yan Pennec

In that work, we investigate numerically photonic topological insulators based on the valley Hall effect. Linear waveguides are coupled to triangular cavities, and a semi-analytical model is used to evidence the relation between a weak back-scattering along light propagation and the shape of the...

12th International Conference on Metamaterials, Photonic Crystals and Plasmonics, META22, Jul 2022, Torremolinos, Spain. ⟨hal-04369166⟩