Publications

Affichage de 1611 à 1620 sur 16055

ART

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⟩

ART

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⟩

ART

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⟩

ART

Bio-based substrate for flexible electronics - application to a 2.45 GHz wearable patch antenna

Abdelghafour Sid, Pierre-Yves Cresson, Nicolas Joly, Flavie Braud, Tuami Lasri

In this paper, a bio-based and biocompatible polymer, Cellulose Laurate (CL), is proposed for flexible radiofrequency (RF) electronics. The synthesis of CL films together with their characterizations (chemical, thermal, mechanical and dielectric) are presented. The results obtained allow…

Materials Today Electronics, 2023, 5, pp.100049. ⟨10.1016/j.mtelec.2023.100049⟩. ⟨hal-04146482⟩

ART

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⟩

ART

Discovery of a Peptide Nucleic Acid (PNA) aptamer for cardiac troponin I: Substituting DNA with neutral PNA maintains picomolar affinity and improves performances for electronic sensing with graphene field-effect transistors (gFET)

Teresa Rodrigues, Federica Curti, Yann R. Leroux, Alexandre Barras, Quentin Pagneux, Henri Happy, Christoph Kleber, Rabah Boukherroub, Roger Hasler, Stefano Volpi, Maria Careri, Roberto Corradini, Sabine Szunerits, Wolfgang Knoll

DNA-based aptamers are widely employed as bioreceptors, owing to their tuneable affinity and specificity towards their targets. The use of peptide nucleic acids (PNAs) has instead proven challenging for this purpose, due to the absence of selection methods for the independent discovery of suitable…

Nano Today, 2023, 50, pp.101840. ⟨10.1016/j.nantod.2023.101840⟩. ⟨hal-04102165⟩

ART

Capillary-driven horseshoe vortex forming around a micro-pillar

K. Ozawa, H. Nakamura, K. Shimamura, G.F. Dietze, H.N. Yoshikawa, Farzam Zoueshtiagh, K. Kurose, L. Mu, I. Ueno

Hypothesis: Horseshoe vortices are known to emerge around large-scale obstacles, such as bridge pillars, due to an inertia-driven adverse pressure gradient forming on the upstream-side of the obstacle. We contend that a similar flow structure can arise in thin-film Stokes flow around micro-…

Journal of Colloid and Interface Science, 2023, 642, pp.227-234. ⟨10.1016/j.jcis.2023.03.039⟩. ⟨hal-04187943⟩

ART

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⟩

COMM

Glass-to-glass delay reduction: encoding rate reduction vs. video frame extrapolation

Hind Kanj, Anthony Trioux, Marco Cagnazzo, François-Xavier Coudoux, Patrick Corlay, M. Kieffer

Applications such as teleoperated driving, remote robot control, and telepresence rely on video services to ensure real-time interaction with a satisfying quality of experience. Reducing the Glass-to-Glass (G2G) delay, i.e., the time delay between the acquisition of a video frame and its display on…

2023 IEEE 25th International Workshop on Multimedia Signal Processing, MMSP, IEEE, Sep 2023, Poitier, France. pp.1-6, ⟨10.1109/MMSP59012.2023.10337718⟩. ⟨hal-04246725⟩

ART

All-Solid-State Interdigitated Micro-Supercapacitors Based on Porous Gold Electrodes

Aymeric Pastre, Alexandre Boé, Nathalie Rolland, Rémy Bernard

Recent developments in embedded electronics require the development of micro sources of energy. In this paper, the fabrication of an on-chip interdigitated all-solid-state supercapacitor, using porous gold electrodes and a PVA/KOH quasisolid electrolyte, is demonstrated. The fabrication of the…

Sensors, 2023, 23 (2), pp.619. ⟨10.3390/s23020619⟩. ⟨hal-03929831⟩