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Affichage de 1901 à 1910 sur 16076

Article dans une revue

An electronic nose using conductometric gas sensors based on P3HT doped with triflates for gas detection using computational techniques (PCA, LDA, and kNN)

Aicha Boujnah, Aimen Boubaker, Sébastien Pecqueur, Kamal Lmimouni, Adel Kalboussi

This study presents the development of an electronic nose comprising eight homemade sensors with pure P3HT and doped with different materials. The objective is to electronically identify the gases exposed on these sensors and evaluate the accuracy of target-gas classification. The resistance...

Journal of Materials Science: Materials in Electronics, 2022, 33, pp.27132-27146. ⟨10.1007/s10854-022-09376-2⟩. ⟨hal-03851261⟩

Article dans une revue

Dendrogram-based Artificial Neural Network modulation classification for dual-hop cooperative relaying communications

H. Moulay, A.B. Djebbar, B. Dehri, Iyad Dayoub

This paper contributes to the growing field of Artificial Neural Networks (ANNs) strategies of Automatic Modulation Identification (AMI) for Cognitive Radio (CR). Traditional AMI-based ANN methods suffer from many drawbacks such as overfitting due to ANN architectures with complex layers, low...

Physical Communication, 2022, 55, pp.101929. ⟨10.1016/j.phycom.2022.101929⟩. ⟨hal-03852280⟩

Article dans une revue

Negative‐Index Acoustic Metamaterial Operating above 100 kHz in Water Using Microstructured Silicon Chips as Unit Cells

Jiaying Wang, Florian Allein, Cécile Floer, Nicholas Boechler, James Friend, Oscar Vazquez-Mena

A major challenge for negative-index acoustic metamaterials is increasing their operational frequency to the MHz range in water for applications such as biomedical ultrasound. Herein, a novel technology to realize acoustic metamaterials in water using microstructured silicon chips as unit cells...

Advanced Materials Technologies, 2022, 7 (12), pp.2200407. ⟨10.1002/admt.202200407⟩. ⟨hal-03745861⟩

Article dans une revue

Synergism induced sensitive SERS sensing to detect 2,6-Di-t-butyl-p-hydroxytoluene (BHT) with silver nanotriangles sensitized ZnO nanorod arrays for food security applications

Krithikadevi Ramachandran, Abderrahmane Hamdi, Soumya Columbus, Nour Al Meselmene, El Hadj Dogheche, Kais Daoudi, Mounir Kaidi

By the over exploitation of synthetic phenolic antioxidants [2,6-Di-t-butyl-p-hydroxytoluene (BHT)] alarm the society with greater health risk urge for careful monitoring and assessment. To accomplish the objective, surface enhanced Raman scattering (SERS) is explored as prominent technique for...

Surfaces and Interfaces, 2022, 35, pp.102407. ⟨10.1016/j.surfin.2022.102407⟩. ⟨hal-03835398⟩

Article dans une revue

Theoretical modeling of dendrite growth from conductive wire electro-polymerization

Ankush Kumar, Kamila Janzakova, Yannick Coffinier, Sébastien Pecqueur, F. Alibart

Abstract Electropolymerization is a bottom-up materials engineering process of micro/nano-scale that utilizes electrical signals to deposit conducting dendrites morphologies by a redox reaction in the liquid phase. It resembles synaptogenesis in the brain, in which the electrical stimulation in the...

Scientific Reports, 2022, 12 (1), pp.6395. ⟨10.1038/s41598-022-10082-6⟩. ⟨hal-03662526⟩

Article dans une revue

A flexible and wearable dual band bio-based antenna for WBAN applications

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

This paper presents a flexible and wearable (on-body) dual band antenna operating in two Industrial, Scientific and Medical (ISM) frequency bands. The central frequencies selected are equal to 2.45 GHz and 5.8 GHz. In order to make the antenna suitable for Wireless Body Area Network (WBAN)...

AEÜ - International Journal of Electronics and Communications / Archiv für Elektronik und Übertragungstechnik, 2022, 157, pp.154412. ⟨10.1016/j.aeue.2022.154412⟩. ⟨hal-03793739⟩

Article dans une revue

Tunable Topological Acoustic Tamm States in Comblike Structures Based on Band Inversion around Flat Bands

Soufyane Khattou, Yamina Rezzouk, Madiha Amrani, Mohamed El Ghafiani, El Houssaine El Boudouti, Abdelkrim Talbi, Bahram Djafari-Rouhani

We investigate the existence of acoustic Tamm states at the interface between two one-dimensional (1D) comblike phononic crystals (PnCs) based on slender tubes and discuss their topological or trivial character. The PnCs consist of stubs grafted periodically along a waveguide and the two crystals...

Crystals, 2022, 12 (12), pp.1685. ⟨10.3390/cryst12121685⟩. ⟨hal-03874975⟩

Article dans une revue

IDT: an incremental deep tree framework for biological image classification

Wafa Mousser, Salima Ouadfel, Abdelmalik Taleb-Ahmed, Ilham Kitouni

Nowadays, breast and cervical cancers are respectively the first and fourth most common causes of cancer death in females. It is believed that, automated systems based on artificial intelligence would allow the early diagnostic which increases significantly the chances of proper treatment and...

Artificial Intelligence in Medicine, 2022, 134, pp.102392. ⟨10.1016/j.artmed.2022.102392⟩. ⟨hal-03895733⟩

Article dans une revue

A colorimetric assay and MCR-ALS analysis of the peroxidase-like activity of poly (N-phenylglycine) functionalized with polyethylene glycol (PNPG-PEG) nanozyme for the determination of dopamine

Mehri Razavi, Alexandre Barras, Sabine Szunerits, Maryam Khoshkam, Mohsen Kompany-Zareh, Rabah Boukherroub

This report describes, for the first time, the coupling of UV–visible spectroscopy with multivariate curve resolution-alternative least-squares (MCR-ALS) algorithm to study peroxidase-like catalytic reaction of polyethylene glycol-functionalized poly (N-phenyl glycine) (PNPG-PEG) as an efficient...

Analytica Chimica Acta, 2022, 1235, pp.340493. ⟨10.1016/j.aca.2022.340493⟩. ⟨hal-03839132⟩

Thèse

Cristaux phononiques aléatoires, Random phononic crystals

Rock Akiki

Au début des années 1990, une nouvelle discipline de la physique est apparue à travers l'étude des cristaux phononiques. Ce travail s'intéresse aux cristaux phononiques, cristaux artificiels dont les propriétés physiques peuvent être modulées par la nature et/ou la géométrie de leurs..., In the early 1990s, a new discipline of physics appeared through the study of phononic crystals. This work focuses on phononic crystals, artificial crystals whose physical properties can be modulated by the nature and/or the geometry of their components. These materials have allowed the...

Acoustique [physics.class-ph]. Université de Lille, 2022. Français. ⟨NNT : 2022ULILN027⟩. ⟨tel-04032849⟩