Publicaciones

Affichage de 741 à 750 sur 16055

ART

Variational approaches to the elasticity of deformable strings with and without mass redistribution

Stefano Giordano

Abstract: The catenary is a curve that has played a significant role in the history of mathematics, finding applications in various disciplines such as mechanics, technology, architecture, the arts, and biology. In this paper, we introduce some generalizations by applying the variational method to...

Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2024, 2024 (e202400057), pp.1-26. ⟨10.1002/zamm.202400057⟩. ⟨hal-04632915⟩

ART

Performance investigation of 1.5 Tb/s optical hybrid 2D-OCDMA/OFDM system using direct spectral detection based on successive weight encoding algorithm

Mohamed Rahmani, Abdelhamid Cherifi, Ghoutia Naima Sabri, Mohammed I. Al-Rayif, Iyad Dayoub, Boubakar S. Bouazza

In order to raise the performance of optical communication systems, it is imperative mainly to increase the number of available users while decreasing the bit error rate (BER) in the required spectral width. This can be challenging in optical multiplexing systems including incoherent optical code...

Optics and Laser Technology, 2024, 174, pp.110666. ⟨10.1016/j.optlastec.2024.110666⟩. ⟨hal-04465241⟩

COMM

Cellules à vapeur alcaline microfabriquées à atmosphère contrôlée pour les capteurs atomique

Linda Peroux, Andrei Mursa, Arthur Dewilde, Quentin Tanguy, Ravinder Chutani, Clément Carlé, Rémy Vicarini, Moustafa Abdel Hafiz, Rodolphe Boudot, Vincent Maurice, Nicolas Passilly

Nous présentons des techniques récemment développées pour former, remplir et sceller des cellules à vapeur alcaline microfabriquées. Ces techniques reposent sur des microstructures de scellement à usage unique, fabriquées au sein des cellules, et pouvant être actionnées par irradiation laser, soit...

10ème Congrès général Optique de la Société Française d'Optique, Jul 2024, Rouen, France. ⟨hal-04745452⟩

COMM

Microwave Imaging with Open-Ended Coaxial Probes

Kamel Haddadi, Clément Lenoir, Mohamed Sebbache, Chia-Hung Lee, Peter Burke

This work proposes an innovative approach to microwave imaging by combining robotics with open-ended coaxial probes. Traditionally, open-ended coaxial probes have been employed for precise dielectric measurements. However,their integration with robotics introduces a novel dimension,enabling dynamic...

IEEE International Conference on Manipulation, Automation and Robotics at Small Scales, IEEE, Jul 2024, Delft, Netherlands. ⟨hal-04946860⟩

COMM

La spectroscopie THz et ses applications dans les domaines analytiques

Jeyan Bichon, Noureddin Osseiran, Sophie Eliet, Romain Peretti

La gamme TéraHertz en général, et la spectroscopie TéraHertz en particulier, sont des domaines en pleine expansion et largement exposés. Dans cette conférence, nous présenterons les bases expérimentales de cette spectroscopie et son contexte, tant fondamental qu’applicatif, en soulignant ses liens...

OPTIQUE Normandie 2024, Jul 2024, Rouen, France. ⟨hal-04633379⟩

ISSUE

[Editorial] Preface to the special issue in micro and nano structured mid-IR to terahertz materials and devices

Delphine Marris-Morini, Mikhail Belkin, Kristinn Gylfason, Liam O'Faolain, Mathias Vanwolleghem

This is an introduction to the special issue “Micro and nano structured mid-IR to Terahertz materials and devices” which aims to cover recent developments in terms of photonics devices operating from the mid-infrared to terahertz wavelength ranges, with possible applications in spectroscopy,...

Photonics and Nanostructures - Fundamentals and Applications, pp.101299, 2024, ⟨10.1016/j.photonics.2024.101299⟩. ⟨hal-04673442⟩

COMM

Nanorobotic Integration with Millimeter-Waves: Advancing Precise Free-Space Sensing

Nawal Alsaleh, Denis Pomorski, Mohamed Sebbache, Clément Lenoir, Kamel Haddadi

This work proposes a novel approach to advance non-contact millimeter-wave sensing capabilities through the fusion of microwave characterization techniques with nanorobotics. Firstly, we introduce a WR15 waveguide six-port radar operating around 60 GHz for precise measurement of free-space...

2024 25th International Microwave and Radar Conference (MIKON), Jul 2024, Wroclaw, Poland. pp.324-326, ⟨10.23919/MIKON60251.2024.10633954⟩. ⟨hal-04698839⟩

ART

Loss-induced modal selection by a resistive wiremesh

Svetlana Kuznetsova, Yves Aurégan, Vincent Pagneux

This work examines the impact of local losses produced by a resistive wiremesh on the modes of an acoustic cavity. In the 1D case, we demonstrate the ability to selectively affect the modes, ranging from being completely unaffected by the wiremesh to being fully absorbed by it. This effect can be...

Journal of the Acoustical Society of America, 2024, 156 (1), pp.369-377. ⟨10.1121/10.0026541⟩. ⟨hal-04687407⟩

COMM

Biomimetic anti-icing surfaces applied to second generation refrigerating systems, Surfaces biomimétiques anti-glace appliquées aux systèmes de réfrigération secondaire.

Florian Bas, Maude Jimenez, Vincent Thomy, Laurence Fournaison, Anthony Delahaye, Pascal Clain, Yannick Coffinier

One action to protect environment in this global climate change crisis is to lower the use of CFCs (ChloroFluoroCarbons) in primary refrigerating systems. To reduce the use of such substances, second generation refrigerating systems using ecological high energy density refrigerant (ice slurry) have...

Biofouling & Environment, Jul 2024, Lorient (56100), France. ⟨hal-04894730⟩

ART

InAlGaN-based HEMT with very low Ohmic contact resistance regrown at 850 °C by MOVPE

Charles Pitaval, Sébastien Aroulanda, Yassine Fouzi, Nicolas Defrance, Cédric Lacam, Nicolas Michel, Nadia El Bondry, Mourad Oualli, Laurent Teisseire, Jean-Claude Jacquet, Stéphane Piotrowicz, Christophe Gaquière, Sylvain Delage

Regrown Ohmic contacts have been widely studied for high millimeter-wave applications. However, few were applied to InAl(Ga)N-based HEMT despite the lattice match benefits with GaN channel because of the poor thermal stability of the quaternary barrier. In this article, we use relatively low...

Applied Physics Letters, 2024, 125 (1), ⟨10.1063/5.0214563⟩. ⟨hal-04663951⟩