Publications

• Article dans une revue

Stability of the threshold voltage in fluorine-implanted normally-off AlN/GaN HEMTs co-integrated with commercial normally-on GaN HEMT technology

Florent Albany, François Lecourt, Ewa Walasiak, N. Defrance, Arnaud Curutchet, Hassan Maher, Yvon Cordier, Nathalie Labat, Nathalie Malbert

Fluorine ion migration in normally-off AlN/GaN HEMTs fabricated by fluorine ion plasma implantation technology is evidenced. Devices under test are co-integrated into the OMMIC commercial D006GH/D01GH MMIC process, providing fluorine-free normally-on HEMTs. Gate reverse bias step-stress experiment…

Microelectronics Reliability, 2021, 126, pp.114291. ⟨10.1016/j.microrel.2021.114291⟩. ⟨hal-03539673⟩

• Brevet

Method for manufacturing a varactor diode and a bipolar transistor

Pascal Chevalier, Alexis Gauthier, Gregory Avenier

France, Patent n° : FR3098015 (A1) 2021-01-01. 2021, N° de priorité : FR20190007149 20190628. ⟨hal-05639334⟩

• Communication dans un congrès

Bowl-shaped ZnO ultrasonic transducer for photoacoustic/ultrasonic multimode microscopy

J. Zhang, D. Zhao, D. Li, F. Tian, Wei-Jiang Xu, X. Wu

A bowl-shaped ultrasonic transducer is proposed for photoacoustic/ultrasonic multimode microscopy. The transducer uses zinc oxide (ZnO) as the piezoelectric material, which has a better electromechanical coefficient than flexible PVDF polymer and ensures the detection sensitivity. The ZnO film is…

2021 IEEE International Ultrasonics Symposium (IUS), Sep 2021, Xi'an, China. ⟨10.1109/IUS52206.2021.9593419⟩. ⟨hal-03541939⟩

• Article dans une revue

High-Q silicon nitride drum resonators strongly coupled to gates

Xin Zhou, Srisaran Venkatachalam, Ronghua Zhou, Hao Xu, Alok Pokharel, Andrew Fefferman, Mohammed Zaknoune, Eddy Collin

Silicon nitride (SiN) mechanical resonators with high quality mechanical properties are attractive for fundamental research and applications. However, it is challenging to maintain these mechanical properties while achieving strong coupling to an electrical circuit for efficient on-chip integration…

Nano Letters, 2021, 21 (13), pp.5738-5744. ⟨10.1021/acs.nanolett.1c01477⟩. ⟨hal-03263144⟩

• Article dans une revue

Modeling and experimental analysis of the mass loading effect on micro-ionic polymer actuators using step response identification

Iman Dadras, Sofiane Ghenna, Sébastien Grondel, Eric Cattan, Jaan Raik, Alvo Aabloo, Saoni Banerji

This paper presents a linear electrochemomechanical model for microscale ionic actuators. A frequency-domain approach is used to facilitate model interpretation, simplify model application, and accelerate the generation of actuator-specific models. A system comprising a micro PEDOT:PSS/PEO actuator…

Journal of Microelectromechanical Systems, 2021, 30 (2), pp.243-252. ⟨10.1109/JMEMS.2021.3060897⟩. ⟨hal-03162798⟩

• Article dans une revue

Growth temperature effect on physical and mechanical properties of nitrogen rich InN epilayers

Z. Benzarti, T. Sekrafi, A. Khalfallah, Zahia Bougrioua, D. Vignaud, M. Evaristo, A. Cavaleiro

A set of N-polar InN epilayers has been grown at different temperatures by plasma-assisted molecular beam epitaxy (PA-MBE) on GaN/AlN/Al2O3(0001) templates. The purpose is to understand how the variation of crucial factor, such as the temperature, impacts the growth process and the resulting…

Journal of Alloys and Compounds, 2021, 885, pp.160951. ⟨10.1016/j.jallcom.2021.160951⟩. ⟨hal-03542616⟩

• Chapitre d'ouvrage

1 - Open loop

L. Dobrzynski, Housni Al Wahsh, Abdellatif Akjouj, El Houssaine El Boudouti, Cécile Ghouila-Houri, Abdelkrim Talbi, Gaëtan Lévêque, Bahram Djafari-Rouhani, Yan Pennec, Yabin Jin

Networks can be constructed out of finite open loops. Open loops are guides such that their one-dimensional properties may be considered independent of the open loop shape and radius. Their response function is derived from that of infinite open loops. A general definition of eigenstates is also…

Photonics, Part one: photonic paths, Elsevier, pp.3-13, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00010-1⟩. ⟨hal-03350729⟩

• Chapitre d'ouvrage

3 - Path states

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

Any open and closed loop eigenfunction has zero motion space points, called here robust zeros. Any such zero is robust because its eigenstate cannot be activated by any action applied on it. Indeed, such zero space positions remain unaffected when the loop is interfaced with its outside world only…

Photonics, Part one : photonic paths, Elsevier, pp.21-31, 2021, 978-0-12-819388-4. ⟨10.1016/B978-0-12-819388-4.00012-5⟩. ⟨hal-03350804⟩

• Article dans une revue

Development of broadband high-frequency piezoelectric micromachined ultrasonic transducer array

Xu-Bo Wang, Le-Ming He, You-Cao Ma, Wen-Juan Liu, Wei-Jiang Xu, Jun-Yan Ren, Antoine Riaud, Jia Zhou

Piezoelectric micromachined ultrasonic transducers (PMUT) are promising elements to fabricate a two-dimensional (2D) array with a pitch small enough (approximately half wavelength) to form and receive arbitrary acoustic beams for medical imaging. However, PMUT arrays have so far failed to combine…

Sensors, 2021, 21 (5), pp.1823. ⟨10.3390/s21051823⟩. ⟨hal-03260141⟩

• Autre publication scientifique

Author Correction: Optoelectronic mixing with high-frequency graphene transistors (Nature Communications, (2021), 12, 1, (2728), 10.1038/s41467-021-22943-1)

A. Montanaro, W. Wei, D. de Fazio, U. Sassi, G. Soavi, P. Aversa, A.C. Ferrari, Henri Happy, P. Legagneux, Emiliano Pallecchi

The original version of this Article contained an error in Fig. 7 and Fig. 8a, c, in which the unit on the vertical axes incorrectly read “μS”. This has been corrected to “S” in both the PDF and HTML versions of the Article. © 2021 The Author(s).

2021, pp.3507. ⟨10.1038/s41467-021-23916-0⟩. ⟨hal-03542160⟩