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Affichage de 3401 à 3410 sur 16271

Article dans une revue

Hierarchical large-scale elastic metamaterials for passive seismic wave mitigation

M. Miniaci, Nesrine Kherraz, Charles Croënne, Matteo Mazzotti, Maryam Morvaridi, Antonio S. Gliozzi, Miguel Onorato, Federico Bosia, Nicola Maria Pugno

Large scale elastic metamaterials have recently attracted increasing interest in the scientific community for their potential as passive isolation structures for seismic waves. In particular, so-called “seismic shields” have been proposed for the protection of large areas where other isolation…

EPJ Applied Metamaterials, 2021, 8, pp.14. ⟨10.1051/epjam/2021009⟩. ⟨hal-03254585⟩

Article dans une revue

Facile Charge Transfer between Barbituric Acid and Chloranilic Acid over g-C3N4: Synthesis, Characterization and DFT Study

Gaber Mersal, Mohamed Ibrahim, Mohammed Amin, Amine Mezni, Nasser Mostafa, Sarah Alharthi, Rabah Boukherroub, Hamdy El-Sheshtawy

The molecular complexes between barbituric acid (BU) and chloranilic acid (ChA) over graphitic nitride (g-C3N4) are investigated. The molecular complexes and the nanocomposite were investigated both in solid state and in methanol. The solid complexes and the corresponding nanocomposite were…

Crystals, 2021, 11 (6), pp.636. ⟨10.3390/cryst11060636⟩. ⟨hal-03441462⟩

Chapitre d'ouvrage

18 - Optical Tamm States in Semiinfinite Layered Photonic Crystals

Abdellatif Akjouj, El Houssaine El Boudouti, L. Dobrzynski, Bahram Djafari-Rouhani, Gaëtan Lévêque

We investigate localized and resonant optical waves associated with a semiinfinite one-dimensional photonic crystal constructed by two different layers (1 and 2) and terminated with a cap layer. In this chapter, we present an analytic determination of the response function (Green's function)…

Photonics, Part Three: Photonic Materials, Elsevier, pp.489-527, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00029-0⟩. ⟨hal-03360006⟩

Article dans une revue

Electronic-components less fully textile multiple resonant combiners for body-centric near field communication

Baptiste Garnier, Philippe Mariage, François Rault, Cédric Cochrane, Vladan Koncar

Smart and e-textiles have nowadays an important increasing place in the garment industry. The rise of embedded telecommunications, especially smartphones in our pocket, enables us to provide a power source and a wireless link for smart textiles. The main issue is to develop garments able to receive…

Scientific Reports, 2021, 11 (1), pp.2159. ⟨10.1038/s41598-021-81246-z⟩. ⟨hal-03121430⟩

Article dans une revue

Vertical Engineering for Large Brillouin Gain in Unreleased Silicon-Based Waveguides

L. Mercadé, A.V. Korovin, Yan Pennec, J. Ahopelto, Bahram Djafari-Rouhani, A. Martínez

Strong acousto-optic interaction in high-index waveguides and cavities generally requires the releasing of the high-index core to avoid mechanical leakage into the underlying low-index substrate. This complicates fabrication, limits thermalization, reduces the mechanical robustness, and hinders…

Physical Review Applied, 2021, 15 (3), pp.034021. ⟨10.1103/PhysRevApplied.15.034021⟩. ⟨hal-03542158⟩

Article dans une revue

Theoretical analysis of the effect of the interfacial MoSe$_2$ layer in CIGS-based solar cells

Adama Sylla, N’guessan Armel Ignace, Touré Siaka, Jean-Pierre Vilcot

The aim of this work is to analyze the influence of the interfacial MoSe$_2$ layer on the performance of a /n-ZnO/i-ZnO/n-Zn(O,S)/p-CIGS/p<sup>+</sup>-MoSe<sub>2</sub>/Mo/SLG solar cell. In this investigation, the numerical simulation software AFORS-HET is used to calculate…

Open Journal of Modelling and Simulation, 2021, 09 (04), pp.339-350. ⟨10.4236/ojmsi.2021.94022⟩. ⟨hal-03681482⟩

Chapitre d'ouvrage

23 - Multilayered Structures Based One Dimensional Photonic Crystals for MEMS Applications

Cécile Ghouila-Houri, Abdelkrim Talbi, Abdellatif Akjouj, El Houssaine El Boudouti, Bahram Djafari-Rouhani, L. Dobrzynski

This chapter presents and discusses the modeling of multilayered structures based 1D photonic crystals for micro-electro-mechanical systems (MEMS) applications. We particularly report in this chapter a design for realizing a 1D photonic crystal cavity based on highly flexible thin elastomer that…

Photonics, Part Three: Photonic Materials, Elsevier, pp.657-675, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00034-4⟩. ⟨hal-03360017⟩

Article dans une revue

Topological surface wave metamaterials for robust vibration attenuation and energy harvesting

Xinyue Wu, Yabin Jin, Abdelkrim Khelif, Xiaoying Zhuang, Timon Rabczuk, Bahram Djafari-Rouhani

We propose topological metamaterials working in Hertz frequency range, constituted of concrete pillars on the soil ground in a honeycomb lattice. Based on the analog of the quantum valley Hall effect, a non-trivial bandgap is formed by breaking the inversion symmetry of the unit cell. A topological…

Mechanics of Advanced Materials and Structures, 2021, pp.1937758 (9). ⟨10.1080/15376494.2021.1937758⟩. ⟨hal-03549400⟩

Chapitre d'ouvrage

10 - Photonic Demultiplexers Based on Fano and Induced Transparency Resonances

El Houssaine El Boudouti, Abdellatif Akjouj, Bahram Djafari-Rouhani, Abdelkrim Talbi, L. Dobrzynski

In this chapter, we give an analytical and experimental demonstration of the possibility to realize a simple photonic demultiplexer based on Fano and electromagnetically induced transparency resonances. The demultiplexer consists on a Y-shaped waveguide with an input line and two output lines. Each…

Photonics, Part 2: Photonic Circuits, Elsevier, pp.193-217, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00020-4⟩. ⟨hal-03359901⟩

Chapitre d'ouvrage

12 - Serial Loop Structures: Photonic Bandgaps, Confined, Cavity, and Surface Modes

El Houssaine El Boudouti, Bahram Djafari-Rouhani, Abdellatif Akjouj, L. Dobrzynski

In this chapter, we investigate the electromagnetic band structure, transmission, phase time, as well as confined and surface modes in a one-dimensional photonic structure made of loops pasted together with segments of finite length. In this serial loop structure, the loops and segments are…

Photonics, Part 2: Photonic Circuits, Elsevier, pp.287-331, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00022-8⟩. ⟨hal-03359902⟩