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Affichage de 4801 à 4810 sur 16434

Article dans une revue

Performance assessment of a small-size ocean wave energy harvester

Yongjie Sang, Bertrand Dubus

A lightweight electromechanical device is studied to harvest energy of ocean waves and supply electrical power to small-size ocean observation equipment such as sonobuoys. It is composed of a magnet fixed to the floating housing which follows the motion of the ocean surface and a moving coil…

MATEC Web of Conferences, 2019, 283, pp.05006. ⟨10.1051/matecconf/201928305006⟩. ⟨hal-02395559⟩

Communication dans un congrès

On the impact of the covariance matrix size for spectrum sensing methods:beamforming versus eigenvalues

Kais Bouallegue, Matthieu Crussière, Iyad Dayoub

In this paper, we investigate the impact of the covariance matrix (CM) size of the received signal on the performance of spectrum sensing methods. Our analysis is based on two well-known methods of spectrum sensing (SS), one based on the eigenvalues called maximum-to minimum eigenvalue (MME) and…

24th IEEE Symposium on Computers and Communications (ISCC 2019), Jun 2019, Barcelona, Spain. pp.95-99, ⟨10.1109/ISCC47284.2019.8969741⟩. ⟨hal-03383700⟩

Communication dans un congrès

A method to determine wide bandgap power devices packaging interconnections

Loris Pace, N. Defrance, Jean-Claude de Jaeger, Arnaud Videt, Nadir Idir

Wide Bandgap (WBG) power devices show very good characteristics for high frequency operation in power converters, leading to a better power integration by reducing size and weight of passive components. Access parasitics such as resistances and inductances related to packaging and interconnections…

23rd IEEE Workshop on Signal and Power Integrity (SPI), Jun 2019, Chambery, France. pp.1-4, ⟨10.1109/SaPIW.2019.8781641⟩. ⟨hal-03276911⟩

Article dans une revue

Fusion of transformed shallow features for facial expression recognition

Fares Bougourzi, Karim Mokrani, Yassine Ruichek, Fadi Dornaika, Abdelkrim Ouafi, Abdelmalik Taleb-Ahmed

Facial expression conveys important signs about the human affective state, cognitive activity, intention and personality. In fact, the automatic facial expression recognition systems are getting more interest year after year due to its wide range of applications in several interesting fields such…

IET Image Processing, 2019, 13 (9), pp.1479-1489. ⟨10.1049/iet-ipr.2018.6235⟩. ⟨hal-03138559⟩

Article dans une revue

On evaporation via an inclined rotating circular lift-off shadow or stencil mask

S. Arscott

A mathematical model is developed to calculate the topography of a mesa obtained by evaporation of matter via inclined rotating lift-off shadow masking. Two types of masking are considered: a circular mask and a cylindrical mask-the latter involves sidewall deposition. The model is able to predict…

Journal of Vacuum Science & Technology B Microelectronics and Nanometer Structures, 2019, 37 (1), pp.011602. ⟨10.1116/1.5057404⟩. ⟨hal-02345344⟩

Article dans une revue

Design and Implementation of Ternary Logic Integrated Circuits by Using Novel Two-Dimensional Materials

Mingqiang Huang, Xingli Wang, Guangchao Zhao, Philippe Coquet, Bengkang Tay

With the approaching end of Moore’s Law (that the number of transistors in a dense integrated circuit doubles every two years), the logic data density in modern binary digital integrated circuits can hardly be further improved due to the physical limitation. In this aspect, ternary logic (0, 1, 2)…

Applied Sciences, 2019, 9 (20), pp.4212. ⟨10.3390/app9204212⟩. ⟨hal-03091459⟩

Article dans une revue

Transmorphic epitaxial growth of AlN nucleation layers on SiC substrates for high-breakdown thin GaN transistors

Jun Lu, Jr-Tai Chen, Martin Dahlqvist, Riad Kabouche, F Medjdoub, Johanna Rosen, Olof Kordina, Lars Hultman

ABSTRACT Interfaces containing misfit dislocations deteriorate electronic properties of heteroepitaxial wide bandgap III-nitride semiconductors grown on foreign substrates, as a result of lattice and thermal expansion mismatches and incompatible chemical bonding. We report grain-boundary-free AlN…

Applied Physics Letters, 2019, 115 (22), pp.221601. ⟨10.1063/1.5123374⟩. ⟨hal-02400602⟩

Article dans une revue

An autonomous low-power management system for energy harvesting from a miniaturized spherical piezoelectric transducer

Daher Diab, Fabrice Lefebvre, Georges Nassar, Nikolay Smagin, Samih Isber, Fawaz El Omar, Adnan Naja

A new spherical vibrational energy harvesting device with an additional low power management circuit for optimizing the power transfer from the mechanical vibrations to a storage capacitor is presented. The device is devoted to underwater wireless sensor network applications due to its broadband…

Review of Scientific Instruments, 2019, 90 (7), pp.075004. ⟨10.1063/1.5084267⟩. ⟨hal-03139114⟩

Chapitre d'ouvrage

Chapter 7 - Two-dimensional magnonic crystals

L. Dobrzynski, Housni Al-Wahsh, Abdellatif Akjouj, Yan Pennec, Bahram Djafari-Rouhani

This chapter presents a short tutorial introduction to the theoretical investigations of two-dimensional inhomogeneous magnetic media. Simple examples are presented for the calculation of the spin-wave spectra of two-dimensional composite materials consisting of periodic square arrays of parallel…

Magnonics: interface transmission tutorial book series, Elsevier, pp.233-250, 2019, ISBN 978-0-12-813366-8 ; e-ISBN 978-0-12-813367-5. ⟨10.1016/B978-0-12-813366-8.00007-8⟩. ⟨hal-03356777⟩

Article dans une revue

Towards all-solution-processed top-illuminated flexible organic solar cells using ultrathin Ag-modified graphite-coated poly(ethylene terephthalate) substrates

Shuanglong Wang, Yi Zhao, Hong Lian, Cuiyun Peng, Xuyong Yang, Yulai Gao, Yan Peng, Weixia Lan, Omar Ibrahim Elmi, Didier Stiévenard, Bin Wei, Furong Zhu, Tao Xu

All-solution-processed flexible organic solar cells (FOSCs) with high power conversion efficiency (PCE) are the prerequisite for application in low-cost, large-area, flexible, photovoltaic devices. In this work, high-performance, top-illuminated FOSCs using ultrathin Ag-modified graphite-coated…

Nanophotonics, 2019, 8 (2), pp.297-306. ⟨10.1515/nanoph-2018-0189⟩. ⟨hal-03153242⟩