Publications

• Article dans une revue

Hermitian and non-Hermitian Weyl physics in synthetic three-dimensional piezoelectric phononic beams

Liangshu He, Yan Li, Bahram Djafari-Rouhani, Yabin Jin

Recently, the evolution of the Weyl point (WP) caused by the introduction of nonhermiticity into Weyl semimetals has aroused great research interest. We consider elastic flexural wave propagation in a phononic beam containing piezoelectric materials and introduce nonhermiticity through active…

Physical Review Research, 2023, 5 (2), pp.023020. ⟨10.1103/PhysRevResearch.5.023020⟩. ⟨hal-04089768⟩

• Article dans une revue

Positional and Rotational Molecular Degrees of Freedom at a Roughened Metal–Organic Interface: The Copper–Fullerene System and Its Multiple Structural Phases

María Alfonso Moro, Y. J. Dappe, Sylvie Godey, Thierry Melin, César González, Valérie Guisset, Philippe David, Benjamin Canals, N. Rougemaille, Johann Coraux

The hybrid metal−organic interaction that molecular monolayers experience when deposited on metallic substrates can compete with intermolecular interactions and produce a variety of on-surface orders. The variety is already important when the molecule/substrate interface remains atomically flat.…

Journal of Physical Chemistry C, 2023, 127 (37), pp.18765-18777. ⟨10.1021/acs.jpcc.3c04787⟩. ⟨hal-04199741⟩

• Article dans une revue

Advances on Microsupercapacitors: Real Fast Miniaturized Devices toward Technological Dreams for Powering Embedded Electronics?

Khac Huy Dinh, Pascal Roussel, Christophe Lethien

Electrochemical lithium (de)intercalation in an atomic layer deposited (ALD) TiO2 anatase thin film deposited on a planar Si /Al2O3/Pt substrate is investigated by Raman spectroscopy. An initial discharge capacity of 63 µAh cm−2 µm−1 (0.5 Li+ mole−1) is reached at C/10 rate, which increases up to…

ACS Omega, 2023, 8 (10), pp.8977-8990. ⟨10.1021/acsomega.2c07549⟩. ⟨hal-04034213⟩

• Article dans une revue

Signal Denoising and Detection for Uplink in LoRa Networks based on Bayesian-optimized Deep Neural Networks

Angesom Ataklity Tesfay, Sofiane Kharbech, Eric Pierre Simon, Laurent Clavier

Long-range and low-power communications are suitable technologies for the Internet of things networks. The long-range implies a very low signal-to-noise ratio at the receiver. In addition, low power consumption requires reduced signaling, hence the use of less complex protocols, such as ALOHA, so…

IEEE Communications Letters, 2023, 27 (1), pp.214 - 218. ⟨10.1109/LCOMM.2022.3217337⟩. ⟨hal-04168105⟩

• Communication dans un congrès

Space-time Modulation in a Piezoelectric Phononic Crystal: Experimental Study in Sub-sonic and Sonic Regimes

Sarah Tessier Brothelande, Charles Croenne, Florian Allein, Jerome Vasseur, Bertrand Dubus

We experimentally study acoustic wave propagation in a spatio-temporally modulated system for different modulation speeds, up to the sonic regime when the modulation speed is similar to the wave propagation speed. The system under study is a piezoelectric phononic crystal whose electrical boundary…

17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023, Sep 2023, Crete, Greece. ⟨hal-04373483⟩

• Article dans une revue

Martens hardness of Constantan thin films on (100) Si wafer: Improvement in contact area function in nanoindentation

Ayyoub Dziri, Alex Montagne, Francine Roudet, Katir Ziouche, Didier Chicot

This work presents a mechanical study by nanoindentation of Constantan thin films deposited by cathodic sputtering technique with an intermediate thin adhesion layer of titanium on a (100) silicon wafer substrate. A methodology based on a modified contact area function is proposed for a suitable…

Thin Solid Films, 2023, pp.139712. ⟨10.1016/j.tsf.2023.139712⟩. ⟨hal-03951065⟩

• Article dans une revue

Spin Seebeck effect and thermal properties of zigzag graphene nanoribbons with edge magnetism

Jing Li, Yann-Michel Niquet, Christophe Delerue

Zigzag graphene nanoribbons (GNRs), demonstrating edge magnetism, are fascinating materials for electronic and spintronic applications. In this paper, we investigate with explicit consideration of electron-phonon scattering the Seebeck effect and thermal conductivity at various carrier densities in…

Physical Review B, 2023, 107 (24), pp.245417. ⟨10.1103/PhysRevB.107.245417⟩. ⟨hal-04140310⟩

• Article dans une revue

Editorial: Focus on organic materials, bio-interfacing and processing in neuromorphic computing and artificial sensory applications

Yoeri van de Burgt, Francesca Santoro, Benjamin Tee, Fabien Alibart

Neuromorphic Computing and Engineering, 2023, 3 (4), pp.040202. ⟨10.1088/2634-4386/ad06ca⟩. ⟨hal-04348640⟩

• Article dans une revue

Unsupervised and efficient learning in sparsely activated convolutional spiking neural networks enabled by voltage-dependent synaptic plasticity

Gaspard Goupy, Alexandre Juneau-Fecteau, Nikhil Garg, Ismael Balafrej, F. Alibart, Luc Frechette, Dominique Drouin, Yann Beilliard

Spiking neural networks (SNNs) are gaining attention due to their energy-efficient computing ability, making them relevant for implementation on low-power neuromorphic hardware. Their biological plausibility has permitted them to benefit from unsupervised learning with bio-inspired plasticity rules…

Neuromorphic Computing and Engineering, 2023, 3 (1), pp.014001. ⟨10.1088/2634-4386/acad98⟩. ⟨hal-03968284⟩

• Article dans une revue

Highly-sensitive SERS detection of tetracycline: Sub-enhancement brought by light scattering of nano-diamond

Jingxuan Pei, Zhenfei Tian, Xiang Yu, Shuting Zhang, Shiqing Ma, Yibo Sun, Rabah Boukherroub

Antibiotic residues in wastewater cause a serious threat to aquatic environment and human safety. Therefore, the development of robust strategies for detecting antibiotic residues becomes critical. In this work, a surface-enhanced Raman scattering (SERS) substrate, consisting of gold nanoparticles/…

Applied Surface Science, 2023, 608, pp.155270. ⟨10.1016/j.apsusc.2022.155270⟩. ⟨hal-03846233⟩