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Affichage de 5181 à 5190 sur 16064

Communication dans un congrès

A Source and Drain Transient Currents Technique for Trap Characterisation in AlGaN/GaN Based Devices

Steven Duffy, Brahim Benbakhti, Wei Zhang, Karol Kalna, Khaled Ahmeda, Maher, Hassan, Ali Soltani

47th European Solid-State Device Research Conference (ESSDERC), Sep 2017, Leuven, Belgium. ⟨hal-02310067⟩

Communication dans un congrès

Importance of buffer configuration in GaN HEMTs for high microwave performance and robustness

Romain Pécheux, Riad Kabouche, Ezgi Dogmus, Astrid Linge, Etienne Okada, Malek Zegaoui, F Medjdoub

We report on a comparison of the ultrathin (sub-10 nm barrier thickness) AlN/GaN heterostructure using two types of buffer layers: 1) carbon doped GaN high electron mobility transistors (HEMTs) and 2) double heterostructure field effect transistor (DHFET). It is observed that the carbon doped HEMT…

ESSDERC 2017 - 47th IEEE European Solid-State Device Research Conference (ESSDERC), Sep 2017, Leuven, Belgium. pp.228-231, ⟨10.1109/ESSDERC.2017.8066633⟩. ⟨hal-03028460⟩

Communication dans un congrès

Acoustic energy transfer by friction induced vibrations

Giovanna Lacerra, Francesco Massi, Eric Chatelet, Emmanuel Moulin

Friction-induced vibrations are often investigated for their unwanted effects, such as surface wear and dynamic instabilities. This article focuses on the exploitation of friction-induced vibrations to transfer the energy between different acoustic fields by an interface under frictional contact.…

X International Conference on Structural Dynamics, EURODYN 2017, Sep 2017, Rome, Italy. ⟨hal-03593863⟩

Communication dans un congrès

Numerical and experimental demonstration of the electrical Bragg band gaps in piezoelectric plates with a periodic array of electrodes

Clement Vasseur, Charles Croënne, Bertrand Dubus, Jerome O. Vasseur, Anne-Christine Hladky, Claude Prevot, Paolo Martins, Mai Pham-Thi

A piezoelectric plate, poled along its thickness, that supports on its top surface a periodic grating of electrodes is considered. If wave propagation is assumed along the length of the plate, one demonstrates that an electrical Bragg band gap can be observed, depending on the electrical boundary…

2017 IEEE International Ultrasonics Symposium (IUS), Sep 2017, Washington, United States. paper 6H-2, 4 p., ⟨10.1109/ULTSYM.2017.8092676⟩. ⟨hal-03299385⟩

Communication dans un congrès

AlN/ZnO/LiNbO<sub>3</sub> packageless structure as a low-profile sensor for on-body applications

Cécile Floer, Mohammed Moutaouekkil, Harshad Mishra, Sami Hage-Ali, Stefan Mc Murtry, Philippe Pigeat, Omar Elmazria, Florian Bartoli, Thierry Aubert, Sergei Zhgoon, Olivier Bou Matar, Abdelkrim Talbi

Surface acoustic wave (SAW) devices are widely used as filters or resonators for mobile communications or radars applications. However, the velocity of the wave can be very sensitive to physical parameters of the environment (temperature, strain...), which allows the device to be used as a sensor.…