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Affichage de 1251 à 1260 sur 16282

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

FT-IR detection of DMMP on TiO 2 -Modified Porous Silicon Substrates

Warda Raiah, M. Guendouz, Parastesh Pirasteh, Vincent Thomy, Joël Charrier, Yannick Coffinier

In this study, we present a new chemical sensor based on a functionalized porous silicon and sensitive to dimethyl methyl phosphonate (DMMP), a simulant of sarin gas, known as one of the most toxic warfare agents. The porous silicon was prepared by anodising a boron-doped p-Si (100) wafer. A metal...

Materials Today Chemistry, 2024, 42, pp.102363. ⟨10.1016/j.mtchem.2024.102363⟩. ⟨hal-04774473v2⟩

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

The Future of Nanotechnology-Driven Electrochemical and Electrical Point-of-Care Devices and Diagnostic Tests

Rabah Boukherroub, Sabine Szunerits

Point-of-care (POC) devices have become rising stars in the biosensing field, aiming at prognosis and diagnosis of diseases with a positive impact on the patient but also on healthcare and social care systems. Putting the patient at the center of interest requires the implementation of noninvasive...

Annual Review of Analytical Chemistry, 2024, 17 (1), pp.173-195. ⟨10.1146/annurev-anchem-061622-012029⟩. ⟨hal-04664758⟩

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⟩

Article dans une revue

Influence of critical micelle concentration of choline-based long chain fatty acid soaps on their antibacterial activity against Methicillin resistant Staphylococcus aureus

Helena Arellano, Tomasz Swebocki, Clémence Le Coeur, Sylvain Prévost, Marwan Abdallah, Véronique Nardello-Rataj, Anne-Laure Fameau

Hypothesis: Antimicrobial resistance (AMR) is a pressing global health concern. ESKAPEE pathogens, such as Methicillin-resistant Staphylococcus aureus (MRSA) are notable of concern in healthcare settings due to their resistance to critical antibiotics. To combat AMR, the development of alternatives...

Journal of Colloid and Interface Science, 2024, 677, pp.314-323. ⟨10.1016/j.jcis.2024.07.218⟩. ⟨hal-04672571⟩

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⟩

Article dans une revue

Bound states in the continuum and long-lived electronic resonances in mesoscopic structures

Leonard Dobrzyński, Housni Al-Wahsh, Abdellatif Akjouj, Eman A Abdel-Ghaffar

A. bound state eigenfunction is defined here to be strictly localized within a subspace of the structure under study and has no decreasing behavior. Its eigenwavelength can be within state continua. Bound states in the continuum (BICs) and long-lived resonances have become a unique way to produce...

Physical Review B, 2024, 110 (3), pp.035428. ⟨10.1103/physrevb.110.035428⟩. ⟨hal-04673330⟩

Article dans une revue

Gas phase growth of metal-organic frameworks on microcantilevers for highly sensitive detection of volatile organic compounds

Masoud Akbari, Hamza Mouharrar, Chiara Crivello, Martial Defoort, Eihab Abdel-Rahman, Skandar Basrour, Kevin Musselman, David Munoz-Rojas

A gas-phase technique, known as chemical vapor deposition of metal-organic frameworks (MOF-CVD), is used for sensitizing silicon cantilevers. These cantilevers are coated with a uniform and compact Zn(EtIm)2 (MAF-6) film, enabling the detection of volatile organic compounds (VOCs) through a change...

APL Materials, 2024, 12 (6), pp.1119. ⟨10.1063/5.0206295⟩. ⟨hal-04626045⟩