Publicaciones

• 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

Optimizing Connectivity: DVB-RCS2 Uplink to GEO Satellites via Optical Wireless Communication

Meryem Romaissa Djellouli, Sid Ahmed Chouakri, Abdelkrim Ghaz, Abdelmalik Taleb-Ahmed

This research focuses on the integration of an opto-satellite system based on Free Space Optical Communication (OWC) within DVB-RCS2 chains, implementing 16-QAM modulation techniques and Optical Time Division Wavelength Multiplexing (OTDMWDM). A co-simulation framework combining the MATLAB and...

Progress In Electromagnetics Research C, 2024, 150, pp.135-144. ⟨10.2528/PIERC24100601⟩. ⟨hal-04839773⟩

• 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

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⟩

• Proceedings/Recueil des communications

Livret Journées Plénières GdR NAME 2024

Konstantinos Termentzidis, Philippe Ben-Abdallah, Olivier Bourgeois, Maryline Guilloux-Viry, Jérôme Saint-Martin, Samy Merabia, Stéphane Cordier, Fabien Grasset, Etienne Blandre, Zahia Bougrioua, D. Hourlier, Marie Lesecq, Kekeli N'Konou, Jean-François Robillard

Journées Plénières GdR NAME 2024, Nov 2024, Villeneuve d'Ascq, France. 45 p., 2024. ⟨hal-04970617⟩

• Article dans une revue

Interdigitated-comb piezoelectric phononic crystals for innovative SAW devices

R. Alcorta Galván, C. Croënne, B. Dubus, E. Eustache, A. Ngabonziza, A.-C. Hladky-Hennion

In this paper, piezoelectric phononic crystals made up of interdigitated combs in floating potential condition are studied. Calculation of the dispersion curves shows that, in addition to Bragg bandgaps due to the presence of periodic electrodes, supplementary bandgaps are present corresponding to...

Applied Physics Letters, 2024, 125 (12), pp.121703. ⟨10.1063/5.0222994⟩. ⟨hal-04738331⟩

• Article dans une revue

Investigation of the motif activity of transcription regulators in pancreatic β-like cell subpopulations differentiated from human induced pluripotent stem cells

Eric Leclerc, Mikhail Pachkov, Lisa Morisseau, Fumiya Tokito, Cecile Legallais, Rachid Jellali, Masaki Nishikawa, Amar Abderrahmani, Yasuyuki Sakai

Pancreatic β-cells are composed of different subtypes that play a key role in the control of insulin secretion and thereby control glucose homeostasis. In vitro differentiation of human induced pluripotent stem cells (hiPSCs) into 3D spheroids leads to the generation of β-cell subtypes and thus to...

Molecular Omics, 2024, ⟨10.1039/D4MO00082J⟩. ⟨hal-04787625⟩

• Article dans une revue

Thermoelectric characterization of crystalline nano-patterned silicon membranes

Hafsa Ikzibane, Akash Patil, Jon Canosa Diaz, Etienne Okada, Etienne Blandre, Emmanuel Dubois, Jean-François Robillard

Research towards efficient and environmentally friendly thermoelectrics proposes silicon nanostructures as possible candidates through reduction of the phononic thermal conductivity. However, there is scarce literature about experimental measurements of the thermoelectric figure-of-merit zT on...

Materials Advances, 2024, 5 (14), pp.5998-6006. ⟨10.1039/D4MA00095A⟩. ⟨hal-04628752⟩

• Communication dans un congrès

Deep Learning-based Successive Interference Cancellation to Improve Uplink in LoRa Networks

Angesom Ataklity Tesfay, Eric Pierre Simon, Mohammed Mallik, Virginie Deniau, Laurent Clavier

This paper presents a deep learning-based successive interference cancellation (SIC) scheme to improve the uplink in the LoRa Network. The proposed receiver can decode simultaneous transmissions from multiple users on the same frequency channel with the same spreading factor. The objective of the...

Fourth IEEE International Mediterranean Conference on Communications and Networking (IEEE MEDITCOM 2024), 2024, Madrid, Spain. pp.179-183. ⟨hal-04618668⟩

• Article dans une revue

In situ growth of N-doped carbon nanotubes from the products of graphitic carbon nitride etching by nickel nanoparticles

Mariusz Pietrowski, Emilia Alwin, Michał Zieliński, Sabine Szunerits, Agata Suchora, Robert Wojcieszak

The in situ growth of N-doped multi-walled carbon nanotubes (N-MWCNTs) from the products of graphitic carbon nitride (g-C$_3$N$_4$) etching by Ni nanoparticles in a hydrogen atmosphere has been confirmed for the first time. During the etching process of g-C$_3$N$_4$, the building blocks, notably...

Nanoscale Advances, 2024, 6, pp.1720-1726. ⟨10.1039/D3NA00983A⟩. ⟨hal-04500515⟩