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Affichage de 1481 à 1490 sur 16553

  • Article dans une revue

Immunity to Backscattering of Bulk Waves in Topological Acoustic Superlattices

P A Deymier, Jérome O Vasseur, K. Runge, A. Khanikaev, A. Alù

We herein investigate the scattering of orthogonal counterpropagating waves and one-way propagating bulk waves in discrete acoustic superlattices subjected to a scattering potential applied to one of the superlattice unit cells. We demonstrate theoretically that the orthogonality of…

Crystals, 2024, 14 (4), pp.344. ⟨10.3390/cryst14040344⟩. ⟨hal-04544219⟩

  • Article dans une revue

A Tight-Binding Model for Illustrating Exciton Confinement in Semiconductor Nanocrystals

Z. Hens, Christophe Delerue

The Brus equation describes the relation between the lowest energy of an electron–hole pair and the size of a semiconductor crystallite. However, taking the strong confinement regime as a starting point, the equation does not cover the transition from weak to strong confinement, the accompanying…

The Journal of Chemical Physics, 2024, 160 (11), pp.114106. ⟨10.1063/5.0192031⟩. ⟨hal-04513566⟩

  • Communication dans un congrès

Enabling Low-Power Signature Recognition for the IoT with SLIF neurons

Guillaume Marthe, Claire Goursaud, Laurent Clavier

Energy constraints are still a significant challenge in numerous IoT applications, particularly due to the excessive power consumption of microcontrollers. To overcome this limitation, novel circuit designs have been introduced, with the integration of spiking neurons and analog computing emerging…

EUSIPCO 2024 - 32nd European conference on signal processing, Aug 2024, Lyon, France. pp.1-5. ⟨hal-04788239⟩

  • Article dans une revue

On the Performance of a Photonic Reconfigurable Electromagnetic Band Gap Antenna Array for 5G Applications

Taha A Elwi, Fatma Taher, Bal S Virdee, Mohammad Alibakhshikenari, Ignacio J Garcia Zuazola, Astrit Krasniqi, Amna Shibib Kamel, Nurhan Türker Tokan, Salahuddin Khan, Naser Ojaroudi Parchin, Patrizia Livreri, Iyad Dayoub, Giovanni Pau, Sonia Aïssa, Ernesto Limiti, Mohamed Fathy Abo Sree

In this paper, a reconfigurable Multiple-Input Multiple-Output (MIMO) antenna array is presented for 5G portable devices. The proposed array consists of four radiating elements and an Elec- tromagnetic Band Gap (EBG) structure. Planar monopole radiating elements are employed in the array with…

IEEE Access, 2024, 12, pp.60849 - 60862. ⟨10.1109/access.2024.3392368⟩. ⟨hal-04569351⟩

  • Article dans une revue

Autonomous radar interference detection and mitigation using neural network and signal decomposition

Dayat Kurniawan, Budiman Putra Asmaur Rohman, Ratna Indrawijaya, Chaeriah Bin Ali Wael, Suyoto Suyoto, Purwoko Adhi, Iman Firmansyah

Autonomous radar interference is a challenging problem in autonomous vehicle systems. Interference signals can decrease the signal-to-interference-noise ratio (SINR), and this condition decreases the performance detection of autonomous radar. This paper exploits a neural network and signal…

IAES International Journal of Artificial Intelligence (IJ-AI), 2024, 13 (3), pp.2854-2861. ⟨10.11591/ijai.v13.i3.pp2854-2861⟩. ⟨hal-04673052⟩

  • Communication dans un congrès

500 GHz operational bandwidth MUTC-photodiodes with milliwatt terahertz output power levels

Ezgi Abacıoğlu, Marcel Grzeslo, Tom Neerfeld, Abdu Subahan Mohammed, J L F Estévez, Guillaume Ducournau, Andreas Stöhr

We present waveguide-integrated 1.55 μm InP-based modified uni-travelling-carrier photodiodes (MUTC-PDs) featuring coplanar waveguide outputs. The fabricated photodiodes yield an operational bandwidth of 500 GHz and milliwatt output power levels in the lower THz domain.

49th European Conference on Optical Communications (ECOC 2023), Oct 2023, Hybrid Conference, Glasgow, United Kingdom. pp.1410 - 1413, ⟨10.1049/icp.2023.2572⟩. ⟨hal-04695657⟩

  • Article dans une revue

Enhancing Tamm Plasmon Sensor Performance using Nanostructured Gold Grating and Porous Materials

O. Haidar, Baptiste Mathmann, Yannick Dusch, Mohamed El Barghouti, Romain Viard, Gaëtan Lévêque, El Houssaine El Boudouti, Abdellah A. Mir, A. Talbi, Abdellatif Akjouj

In this paper, we introduce a gas sensor concept consisting of a nanostructured gold grating coupled with a Distributed Bragg Reflector. This coupling makes it possible to obtain plasmonic Tamm states where excitation is possible at normal incidence and does not require the use of Kretschmann…

IEEE Sensors Journal, 2024, pp.1-1. ⟨10.1109/JSEN.2024.3399315⟩. ⟨hal-04607032⟩

  • Article dans une revue

Thermoelectric Properties of Benzothieno-Benzothiophene Self-Assembled Monolayers in Molecular Junctions

Sergio Gonzalez-Casal, Rémy Jouclas, Imane Arbouch, Yves Geerts, Colin van Dyck, Jérôme Cornil, Dominique Vuillaume

We report a combined experimental (C-AFM and SThM) and theoretical (DFT) study of the thermoelectric properties of molecular junctions made of self-assembled monolayers on Au of thiolated benzothieno-benzothiophene (BTBT) and alkylated BTBT derivatives (C8-BTBT-C8). We measure the thermal…

Journal of Physical Chemistry Letters, 2024, 15, pp.11593-11600. ⟨10.1021/acs.jpclett.4c02753⟩. ⟨hal-04704446v2⟩

  • Article dans une revue

Time-encoded electrical detection of trace RNA biomarker by integrating programmable molecular amplifier on chip

Gurpreet Kaur, Marcel Tintelott, Mohit Suranglikar, Antoine Masurier, Xuan-Thang Vu, Guillaume Gines, Yannick Rondelez, Sven Ingebrandt, Yannick Coffinier, Vivek Pachauri, Alexis Vlandas

One of the serious challenges facing modern point-of-care (PoC) molecular diagnostic platforms relate to reliable detection of low concentration biomarkers such as nucleic acids or proteins in biological samples. Non-specific analyte-receptor interactions due to competitive binding in the presence…

Biosensors and Bioelectronics, 2024, 257, pp.116311. ⟨10.1016/j.bios.2024.116311⟩. ⟨hal-04569563⟩

  • Article dans une revue

Fault detection and localization in unshielded twisted pair cable based on observability analysis and reflectometry experimental measurements.

Hermine Judith Idellette Som, Vincent Cocquempot, Virginie Degardin

In this paper, an efficient method is proposed for detecting and locating a soft fault, i.e. a physical degradation, in a Y -shaped network of unshielded twisted pair cables. The method uses jointly the observability analysis and time-frequency domain reflectometry experimental measurements. The…

Measurement Science and Technology, 2024, 35 (1), pp.015034. ⟨10.1088/1361-6501/ad0069⟩. ⟨hal-04248525⟩