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Affichage de 5061 à 5070 sur 16079

  • Article dans une revue

Propagation of elastic waves in a one-dimensional high aspect ratio nanoridge phononic crystal phononic crystal

Abdellatif Gueddida, Yan Pennec, El Houssaine El Boudouti, George Fytas, Bahram Djafari-Rouhani

We investigate the propagation of elastic waves in a one-dimensional (1D) phononic crystal constituted by high aspect ratio epoxy nanoridges that have been deposited at the surface of a glass substrate. With the help of the finite element method (FEM), we calculate the dispersion curves of the...

Applied Sciences, 2018, 8 (5), pp.805. ⟨10.3390/app8050805⟩. ⟨hal-03185603⟩

  • Article dans une revue

Effect of MoS2 layer on the LSPR in periodic nanostructures

Mohamed El Barghouti, Abdellatif Akjouj, Abdellah Mir

Abstract In this work, we propose a new configuration of the localized surface plasmon resonance (LSPR), based on MoS2 hybrid structures for ultrasensitive biosensing applications. The plasmonic resonances are widely used in bimolecular detection and continue to be an active network because of the...

Optik, 2018, 171, pp.237-246. ⟨10.1016/j.ijleo.2018.06.026⟩. ⟨hal-03183504⟩

  • Article dans une revue

Trapped-mode-induced Fano resonance and acoustical transparency in a one-dimensional solid-fluid phononic crystal

Ilyasse Quotane, El Houssaine El Boudouti, Bahram Djafari-Rouhani

We investigate theoretically and numerically the possibility of existence of Fano and acoustic-induced transparency (AIT) resonances in a simple though realistic one-dimensional acoustic structuremade of solid-fluid layers inserted between two fluids. These resonances are obtained by combining...

Physical Review B, 2018, 97 (2), ⟨10.1103/PhysRevB.97.024304⟩. ⟨hal-03183494⟩

  • Article dans une revue

Magnetoplasmonic nanograting geometry enables optical nonreciprocity sign control

L. Halagačka, Mathias Vanwolleghem, Francois Vaurette, J. Ben Youssef, K. Postava, J. Pištora, Béatrice Dagens

We experimentally demonstrate a disruptive approach to control magnetooptical nonreciprocal effects. It has been known that the combination of a magneto-optically (MO) active substrate and extraordinary transmission (EOT) effects through deep-subwavelength nanoslits of a noble metal grating, leads...

Optics Express, 2018, 26 (24), pp.31554. ⟨10.1364/OE.26.031554⟩. ⟨hal-03084454⟩

  • Article dans une revue

Suppression of contact noise in a study on 1/ f noise as a function of film thickness in Al-doped ZnO

Abicha Achahour, Gérard Leroy, L.K.J. Vandamme, Boubakeur Ayachi, Benoît Duponchel, Nicolas Waldhoff, Karine Blary, Jean-Pierre Vilcot

Aluminum doped-zinc oxide (AZO) thin films were prepared on glass substrate by radio-frequency (RF) sputtering at room temperature. The sheet resistance, Rsh [Ω] the resistivity, ρ [Ω·cm] and the 1/f noise were studied as a function of thickness, t from 50 nm to 450 nm. The eddy current...

Thin Solid Films, 2018, 645, pp.70-76. ⟨10.1016/j.tsf.2017.10.035⟩. ⟨hal-02409513⟩

  • Communication dans un congrès

A fully flexible circuit implementation of clique-based neural networks in 65-nm CMOS

Benoit Larras, Paul Chollet, Cyril Lahuec, Fabrice Seguin, Matthieu Arzel

Clique-based neural networks implement low- complexity functions working with a reduced connectivity be- tween neurons. Thus, they address very specific applications operating with a very low energy budget. This paper proposes a flexible and iterative neural architecture able to implement multiple...

ISCAS 2018 : IEEE International Symposium on Circuits and Systems (ISCAS), May 2018, Firenze, Italy. ⟨10.1109/ISCAS.2018.8350954⟩. ⟨hal-01849349⟩

  • Article dans une revue

VOCs monitoring using differential microwave capacitive resonant transducer and conductive PEDOT:PSS-MWCNTs nanocomposite film for environmental applications

Prince Bahoumina, Hamida Hallil-Abbas, Jean-Luc Lachaud, Aymen Abdelghani, Kamel Frigui, Stéphane Bila, Dominique Baillargeat, Qing Zhang, Philippe Coquet, Carlos Alberto Paragua, Emmanuelle Pichonat, Henri Happy, Dominique Rebière, Corinne Dejous

This paper presents the feasibility of a low-cost fully inkjet printed capacitive microwave flexible gas sensor based on a resonant electromagnetic transducer in micro-strip technology with poly (3,4-ethylenedioxythiophene) polystyrene sulfonate and multi wall carbon nanotubes (PEDOT:PSS-MWCNTs) as...

IEEE Transactions on Nanotechnology, 2018, pp.1-15. ⟨10.1109/TNANO.2018.2828302⟩. ⟨hal-01773210⟩

  • Communication dans un congrès

Sensibiliser les étudiants du Master Audiovisuel et Multimédia à la veille technologique

Caroline Guillaume-Blaydes, Marie Zwingelstein, François-Xavier Coudoux, Michel Pommeray, Philippe Thomin, Nicolas Vieville, Willy Yvart

Depuis 10 ans le département Développement, Recherche, Enseignement en Audiovisuel et Multimédia (DREAM) de l’université Polytechnique des Hauts-de-France (Valenciennes – France) participe chaque année au programme IABM Student Awards (International trade Association for Broadcast & Media...

13ème Colloque Enseignement des Technologies et des Sciences de l'Information et des Systèmes, CETSIS 2018, Oct 2018, Fès, Maroc. pp.201-206. ⟨hal-03549543⟩

  • Article dans une revue

A time-domain model and experimental validation of the acoustic field radiated by air-coupled transducers

Ji Li, Bogdan Piwakowski

This paper presents a time-domain model for the prediction of an acoustic field in an air-coupled, noncontact, ultrasonic setup, which includes an air-coupled Emitter, the Propagation space and an aircoupled Receiver (EPR). The model takes into account the finite size of the aperture receiver,...

Ultrasonics, 2018, 82, pp.114-129. ⟨10.1016/j.ultras.2017.07.020⟩. ⟨hal-03183512⟩

  • Article dans une revue

Effective and rapid technique for temporal response modeling of surface acoustic wave interdigital transducers

Dame Fall, Marc Duquennoy, Mohammadi Ouaftouh, Bogdan Piwakowski, Frédéric Jenot

Surface Acoustic Wave Interdigital Transducers (SAW-IDT) has a considerable application potential for characterization of properties of thin layers, coatings and functional surfaces. For optimization of these SAW-IDTs, it is necessary to study various SAW-IDT configurations by varying the number of...

Ultrasonics, 2018, 82, pp.371-378. ⟨10.1016/j.ultras.2017.09.018⟩. ⟨hal-03183502⟩