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Affichage de 2741 à 2750 sur 16261

Article dans une revue

Equal-efficiency diffraction of unpolarized wideband light with acousto-optic filters

Samuel Dupont, Justine Champagne, Jean-Claude Kastelik

We present the diffraction of unpolarized light over a broad wavelength range using paratellurite Acousto-Optic Tuneable Filters. The diffraction of unpolarized light usually relies on a specific operating point that is sensitive to the wavelength and angle of incidence, resulting in an operating…

Journal of Modern Optics, 2022, 69 (13), 10 p. ⟨10.1080/09500340.2022.2085336⟩. ⟨hal-03699158⟩

Article dans une revue

Thermal control of nucleation and propagation transition stresses in discrete lattices with non-local interactions and non-convex energy

Andrea Cannizzo, Luca Bellino, Giuseppe Florio, Giuseppe Puglisi, Stefano Giordano

Non-local and non-convex energies represent fundamental interacting effects regulating the complex behavior of many systems in biophysics and materials science. We study one-dimensional, prototypical schemes able to represent the behavior of several biomacromolecules and the phase transformation…

The European Physical Journal Plus, 2022, 137 (5), pp.569. ⟨10.1140/epjp/s13360-022-02790-9⟩. ⟨hal-03673427⟩

Article dans une revue

Efficient palmprint biometric identification systems using deep learning and feature selection methods

Selma Trabelsi, Djamel Samai, Fadi Dornaika, Azeddine Benlamoudi, Khaled Bensid, Abdelmalik Taleb-Ahmed

Over the past two decades, several studies have paid great attention to biometric palmprint recognition. Recently, most methods in literature adopted deep learning due to their high recognition accuracy and the capability to adapt with different acquisition palmprint images. However, high-…

Neural Computing and Applications, 2022, 34, pp.12119-12141. ⟨10.1007/s00521-022-07098-4⟩. ⟨hal-03614754⟩

Article dans une revue

Temperature and Gate-Length Dependence of Subthreshold RF Detection in GaN HEMTs

Gaudencio Paz-Martínez, Ignacio Íñiguez-De-La-Torre, Héctor Sánchez-Martín, José Antonio Novoa-López, Virginie Hoel, Yvon Cordier, Javier Mateos, Tomás González

The responsivity of AlGaN/GaN high-electron mobility transistors (HEMTs) when operating as zero-bias RF detectors in the subthreshold regime exhibits different behaviors depending on the operating temperature and gate length of the transistors. We have characterized in temperature (8–400 K) the…

Sensors, 2022, 22 (4), pp.1515. ⟨10.3390/s22041515⟩. ⟨hal-03582713⟩

Article dans une revue

Map-Matching-Based Localization Using Camera and Low-Cost GPS For Lane-Level Accuracy

Rahmad Sadli, Mohamed Afkir, Abdenour Hadid, Atika Rivenq, Abdelmalik Taleb-Ahmed

For self-driving systems or autonomous vehicles (AVs), accurate lane-level localization is a necessity for performing complex driving maneuvers. Classical GNSS based methods are usually not accurate enough to have lane-level localization to support the AV’s maneuvers. LiDAR-based localization can…

Procedia Computer Science, 2022, 198, pp.255-262. ⟨10.1016/j.procs.2021.12.237⟩. ⟨hal-03664756⟩

Communication dans un congrès

Smart Full-Exploitation of Beamforming Fusion assisted Spectrum Sensing for Cognitive Radio

Sarra Ben Chaabane, Kais Bouallegue, Akram Belazi, Sofiane Kharbech, Ammar Bouallegue

This paper proposes blind spectrum sensing (SS) in a narrowband context called Beamforming Fusion assisted Spectrum Sensing (BFSS). Considering a channel with angles of arrival (AoA), we jointly exploit beamforming algorithms to make decisions about the detection of users on frequency resources.…

18th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob), Oct 2022, Thessaloniki, Greece. ⟨10.1109/WIMOB55322.2022.9941584⟩. ⟨hal-04056278⟩

Article dans une revue

Millimeter-Wave Phased Arrays and Over-the-Air Characterization for 5G and Beyond

Mattia Maggi, Syrine Hidri, Loic Marnat, Mauro Ettorre, Gerardo Orozco, Marc Margalef-Rovira, Christophe Gaquière, Kamel Haddadi

Millimeter-wave (mm-wave) technology is a viable candidate to address the growing data traffic in 5G wireless communication and beyond. However, challenges related to free-space propagation loss, atmospheric absorption, scattering, and nonline-of-sight propagation must be addressed to benefit from…

IEEE Microwave Magazine, 2022, 23 (5), pp.67-83. ⟨10.1109/MMM.2022.3148328⟩. ⟨hal-03635815⟩

Communication dans un congrès

THz photonics-based transmitter using multicore fiber combined with UTC-PD array for high data transmission in 300 GHz band

Bewindin Alfred Sawadogo, Aritrio Bandyopadhyay, Malek Zegaoui, Mohammed Zaknoune, Pascal Szriftgiser, Karen Baudelle, Monika Cieslikiewicz-Bouet, Géraud Bouwmans, Davy Gaillot, Esben Ravn Andresen, Guillaume Ducournau, Laurent Bigot

This work aims at illuminating an UTC-PD array with a multicore fiber towards multiple THz carrier generation. This photonics-based transmitter is expected to increase either the data rate via spatial multiplexing on different carriers or the emitted THz-power and therefore the transmission reach…

SPIE Photonics Europe 2022, Terahertz Photonics II, Apr 2022, Strasbourg, France. 18, 5 p., ⟨10.1117/12.2621614⟩. ⟨hal-03741396⟩

Article dans une revue

Elucidating the oscillation instability of sessile drops triggered by surface acoustic waves

Nicolas Chastrette, Michael Baudoin, Philippe Brunet, Laurent Royon, Régis Wunenburger

The oscillation instability of sessile drops is ubiquitous in surface acoustic wave (SAW) -powered digital microfluidics. Yet the physics underlying these phenomena has not been elucidated owing to the complex interplay between hydrodynamics, acoustics, and capillarity. We decipher the instability…

Physical Review Fluids, 2022, 7 (12), pp.124201. ⟨10.1103/PhysRevFluids.7.124201⟩. ⟨hal-03885908v2⟩

Article dans une revue

Molecular beam epitaxial growth of multilayer 2D-boron nitride on Ni substrates from borazine and plasma-activated nitrogen

Jawad Hadid, Ivy Colambo, Jose Avila, Aexandre Plaud, Christophe Boyaval, D. Deresmes, Nicolas Nuns, Pavel Dudin, Annick Loiseau, Julien Barjon, Xavier Wallart, Dominique Vignaud

2D boron nitride (2D-BN) was synthesized by gas-source molecular beam epitaxy on polycrystalline and monocrystalline Ni substrates using gaseous borazine and active nitrogen generated by a remote plasma source. The excess of nitrogen atoms allows to overcome the thickness self-limitation active on…

Nanotechnology, 2022, 34 (3), pp.035601. ⟨10.1088/1361-6528/ac99e5⟩. ⟨hal-03818640⟩