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Affichage de 3351 à 3360 sur 16133

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⟩

Article dans une revue

Robust Automatic Modulation Recognition Through Joint Contribution of Hand-Crafted and Contextual Features

Bachir Jdid, Wei Hong Lim, Iyad Dayoub, Kais Hassan, Mohd Rizon Bin Mohamed Juhari

Automatic modulation recognition (AMR) has become increasingly important in the field of signal processing, especially with the advancements of intelligent communication systems. Deep Learning (DL) technologies have been incorporated into the AMR field and they have shown outstanding performances...

IEEE Access, 2021, 9, pp.104530-104546. ⟨10.1109/ACCESS.2021.3099222⟩. ⟨hal-03382822⟩

Communication dans un congrès

High temperature gradient micro-sensors for skin-friction measurement in flow control applications

Cécile Ghouila-Houri, Manon Benedito, Eric Garnier, Abdelkrim Talbi, Aurélien Mazzamurro, Romain Viard, Alain Merlen, Philippe Pernod, Thomas Arnoult, Quentin Gallas

Robust micro machined high temperature gradient calorimetric (HTGC) transducers were designed and developed for flow separation control. Based on thermal principle, the transducers measure the amplitude and the sign of skin friction, making them particularly useful for flow separation detection. A...

2021 Symposium on Design, Test, Integration and Packaging of MEMS and MOEMS, DTIP 2021, Aug 2021, Paris, France. ⟨10.1109/DTIP54218.2021.9568681⟩. ⟨hal-03541940⟩

Article dans une revue

MEMS High Temperature Gradient Sensor for Skin-Friction Measurements in Highly Turbulent Flows

Cécile Ghouila-Houri, Abdelkrim Talbi, Romain Viard, Quentin Gallas, Eric Garnier, Pascal Molton, Jerome Delva, Alain Merlen, Philippe Pernod

This paper presents and discusses the results obtained with a MEMS (Micro-Electro-Mechanical System) high temperature gradient sensor for time-averaged and fluctuating skin-friction measurements in highly turbulent flows. Designed as a robust wall-mounted suspended hot-wire structure, the micro-...

IEEE Sensors Journal, 2021, 21 (8), pp.9749-9755. ⟨10.1109/JSEN.2020.2991785⟩. ⟨hal-03229029⟩

Communication dans un congrès

Wind tunnel integration of Micro-Magneto-Mechanical Systems (MMMS) microvalves for flow control experiments

Thomas Arnoult, Colin Leclercq, Cécile Ghouila-Houri, Aurélien Mazzamurro, Manon Benedito, Romain Viard, Quentin Gallas, Eric Garnier, Denis Sipp, Abdelkrim Talbi, Philippe Pernod

Flow control techniques can be defined as methods changing a flow natural dynamics. The control of a flow can be achieved with actuators affecting the flow momentum. Therefore, a MMMS microvalve was designed and characterized. The micro-actuators have then been integrated to a wind tunnel on the...

Symposium on Design, Test, Integration and Packaging of MEMS and MOEMS, DTIP 2021, Aug 2021, Paris, France. pp.01-03, ⟨10.1109/DTIP54218.2021.9568496⟩. ⟨hal-03587640⟩

Chapitre d'ouvrage

6 - Closed loop and stubs

L. Dobrzynski, Housni Al Wahsh, Abdellatif Akjouj, Cécile Ghouila-Houri, Abdelkrim Talbi, Gaëtan Lévêque, El Houssaine El Boudouti

Closed loops with finite open loops attached to the robust zeros of one of their two twin states are the systems investigated in this chapter. Such attached finite loops are called stubs. For simplicity, here only the cases where all the stubs have the same length are considered. This length is...

Photonics, Part one: photonic paths, Elsevier, pp.99-131, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00015-0⟩. ⟨hal-03350849⟩

Chapitre d'ouvrage

4 - Open loop examples

Housni Al Wahsh, L. Dobrzynski, Abdellatif Akjouj, El Houssaine El Boudouti

The simplest general robust zero is the middle of an open loop. When the middles of several free-end open loops of the same length are superposed, their antisymmetric eigenfunctions remain unperturbed and the final network has several degenerate states. The next three examples take into account...

Photonics, Part one : photonic paths, Elsevier, pp.33-49, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00013-7⟩. ⟨hal-03350831⟩

Chapitre d'ouvrage

5 - Closed loop examples

Housni Al Wahsh, L. Dobrzynski, Abdellatif Akjouj, El Houssaine El Boudouti

The specific properties of closed loop eigenfunctions deserve to be better understood. This chapter underlines that responses in closed loops differ from the responses in open loops. Within the following simple examples, constructed on closed loop robust zeros, many path states are found.A robust...

Photonics, Part one : photonic paths, Elsevier, pp.51-97, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00014-9⟩. ⟨hal-03350839⟩

Chapitre d'ouvrage

21 - Layered Photonic Crystals with Left-Handed Materials

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

We theoretically investigate the photonic band structure of layered photonic crystals composed of alternating layers of right- and left-handed materials (RHMs and LHMs). The dispersion curves are mainly studied by assuming that the dielectric permittivity and magnetic permeability are constant in...

Photonics, Part Three: Photonic Materials, Elsevier, pp.587-621, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00032-0⟩. ⟨hal-03360012⟩