Reza Aminzadeh, Arno Thielens, Davy Gaillot, M. Lienard, Sam Agneessens, Patrick van Torre, Matthias van den Bossche, Hendrik Rogier, Martin Roosli, Luc Martens, Wout Joseph

For the first time, a dual band wearable personal distributed exposure meter (DPDE) is designed. The DPDE is calibrated on-body in a reverberation chamber. The meter consists of four nodes including textile antennas operating at 2443 MHz (WiFi 2 GHz) and 2595 MHz (LTE 2600 MHz). The location of the…

2nd URSI Atlantic Radio Science Conference, AT-RASC 2018, May 2018, Gran Canaria, Spain. paper K02-05, 586-589, ⟨10.23919/URSI-AT-RASC.2018.8471583⟩. ⟨hal-03346242⟩

Article dans une revue

Gallium nitride MEMS resonators: how residual stress impacts design and performances

Christophe Morelle, Didier Theron, Joff Derluyn, Stefan Degroote, Marianne Germain, Victor Zhang, Lionel Buchaillot, Bertrand Grimbert, Pascal Tilmant, Francois Vaurette, Isabelle Roch-Jeune, Virginie Brandli, Vanessa Avramovic, Etienne Okada, Marc Faucher

Starting from Gallium Nitride epitaxially grown on silicon, pre-stressed micro-resonators with integrated piezoelectric transducers have been designed, fabricated, and characterized. In clamped-clamped beams, it is well known that tensile stress can be used to increase the resonant frequency. Here…

Microsystem Technologies, 2018, 24 (1), pp.371-377. ⟨10.1007/s00542-017-3293-0⟩. ⟨hal-03183510⟩

Article dans une revue

Strain-Reduction Induced Rise in Channel Temperature at Ohmic Contacts of GaN HEMTs

Steven Duffy, Brahim Benbakhti, Karol Kalna, Mohammed Boucherta, Wei Zhang, Nour Eddine Bourzgui, Ali Soltani

ABSTRACT Operating temperature distributions in AlGaN/GaN gateless and gated devices are characterized and analyzed using the InfraScope temperature mapping system. For the first time, a substantial rise of channel temperature at the inner ends of ohmic contacts has been observed. Synchrotron…

IEEE Access, 2018, 6, pp.42721-42728. ⟨10.1109/ACCESS.2018.2861323⟩. ⟨hal-02273401⟩

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Design of a thin-plate based tunable high-quality narrow passband filter for elastic transverse waves propagate in metals

J. Zhang, L. H. Zeng, C. L. Hu, W. S. Yan, Yan Pennec, N. Hu

For the elastic SV (transverse) waves in metals, a high-quality narrow passband filter that consists of aligned parallel thin plates with small gaps is designed. In order to obtain a good performance, the thin plates should be constituted by materials with a smaller mass density and Young’s modulus…

AIP Advances, 2018, 8 (3), pp.035323. ⟨10.1063/1.5023517⟩. ⟨hal-03185617⟩

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Perspective: organic electronic materials and devices for neuromorphic engineering

Sébastien Pecqueur, Dominique Vuillaume, F. Alibart

Neuromorphic computing and engineering has been the focus of intense research efforts that have been intensified recently by the mutation of Information and Communication Technologies (ICT). In fact, new computing solutions and new hardware platforms are expected to emerge to answer to the new…

Journal of Applied Physics, 2018, 124 (15), pp.151902. ⟨10.1063/1.5042419⟩. ⟨hal-02133792⟩

Article dans une revue

Ultra-low loss ridge waveguides on lithium niobate via argon ion milling and gas clustered ion beam smoothening

Shawn Yohanes Siew, Eric Jun Hao Cheung, Haidong Liang, Andrew Bettiol, Noriaki Toyoda, Bandar Alshehri, El Hadj Dogheche, Aaron J. Danner

Lithium niobate's use in integrated optics is somewhat hampered by the lack of a capability to create low loss waveguides with strong lateral index confinement. Thin film single crystal lithium niobate is a promising platform for future applications in integrated optics due to the availability…

Optics Express, 2018, 26 (4), pp.4421-4430. ⟨10.1364/OE.26.004421⟩. ⟨hal-03183505⟩