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Affichage de 2681 à 2690 sur 16064

  • Article dans une revue

Broadband Rayleigh wave attenuation by gradient metamaterials

Xinyue Wu, Zhihui Wen, Yabin Jin, Timon Rabczuk, Xiaoying Zhuang, Bahram Djafari-Rouhani

Broadband attenuation of low frequency acoustic waves in compact structure designs is a challenging issue, especially in the application to seismic waves. In this work, we propose a new seismic metamaterial constituted by a combination of two different attenuating structures, namely pillars above...

International Journal of Mechanical Sciences, 2021, 205, pp.106592. ⟨10.1016/j.ijmecsci.2021.106592⟩. ⟨hal-03408553⟩

  • Article dans une revue

Photopatternable hydroxide ion electrolyte for solid-state micro-supercapacitors

Christopher Choi, Kevin Robert, Grace Whang, Pascal Roussel, Christophe Lethien, Bruce Dunn

Electrochemical energy storage (EES) devices that provide high power and energy for micropower systems are considered to be essential for developing micro/nano electronics such as nanorobotics, environmental sensors, and connected smart electronics. One promising research direction in this field...

Joule, 2021, 5 (9), pp.2466-2478. ⟨10.1016/j.joule.2021.07.003⟩. ⟨hal-03501780⟩

  • Article dans une revue

A barium titanate‐on‐oxide insulator optoelectronics platform

Yu Cao, Siew Li Tan, Eric Jun Hao Cheung, Shawn Yohanes Siew, Changjian Li, Yan Liu, Chi Sin Tang, Manohar Lal, Guanyu Chen, Karim Dogheche, Ping Yang, Steven Pennycook, Andrew Thye Shen Wee, Soojin Chua, El Hadj Dogheche, Thirumalai Venkatesan, Aaron Danner

Electro-optic modulators are among the most important building blocks in optical communication networks. Lithium niobate, for example, has traditionally been widely used to fabricate high-speed optical modulators due to its large Pockels effect. Another material, barium titanate, nominally has a 50...

Advanced Materials, 2021, 33 (37), pp.2101128. ⟨10.1002/adma.202101128⟩. ⟨hal-03501430⟩

  • Article dans une revue

Blind Adaptive Low-Complexity Time-Domain Equalizer for 100-Gb/s Direct-Detection Optical OFDM Systems Over Long-Reach SSMF

Asmaa Benieddi, Sid Ahmed Elahmar, Iyad Dayoub, Shyqyri Haxha

In this article, we report a low-complexity blind adaptive time-domain equalizer (TEQ) to reduce the cyclic prefix (CP) length for 100-Gb/s direct-detection optical orthogonal frequency-division multiplexing (OFDM) system combined with wavelength-division multiplexing system over 400-km standard...

IEEE Systems Journal, 2021, 15 (3), pp.3841-3847. ⟨10.1109/JSYST.2020.2996384⟩. ⟨hal-03382867⟩

  • Article dans une revue

75 nm gate length PHEMT with f max = 800 GHz using asymmetric gate recess: RF and noise investigation

M. Samnouni, Nicolas Wichmann, X. Wallart, Christophe Coinon, Sylvie Lepilliet, S. Bollaert

We report a high maximum frequency of oscillation (f max) and a current-gain cutoff frequency (f T) of 800 and 260 GHz, respectively, with pseudomorphic high-electron mobility transistor (PHEMT), using an InGaAs/InAs composite channel and an asymmetric gate recess. This result was achieved with...

IEEE Transactions on Electron Devices, 2021, 68 (9), pp.4289-4295. ⟨10.1109/TED.2021.3098255⟩. ⟨hal-03419728⟩

  • Article dans une revue

Design of coupled slow-wave CPW millimeter-wave bandpass filter beyond 100 GHz in 55-nm BiCMOS technology

Abdelhalim Saadi, Marc Margalef-Rovira, Olivier Occello, Loïc Vincent, Sylvie Lepilliet, Christophe Gaquière, Philippe Ferrari

The design and experimental results of millimeter-wave bandpass filters (BPFs) implemented in 55-nm BiCMOS technology and operating around 120 GHz are presented in this article. Slightly modified coupled line filters' structures are used in the designs. It allows generating the transmission...

IEEE Transactions on Electron Devices, 2021, 68 (9), pp.4259-4266. ⟨10.1109/TED.2021.3094780⟩. ⟨hal-03347680⟩

  • Article dans une revue

Experimental investigation of the effect of moisture on the acoustic properties of lightweight substrates used in green envelopes

Emmanuel Attal, Yorick Buot de L'Epine, Nicolas Dauchez, Bertrand Dubus

Substrates are used in green walls and roofs to supply air and water to the roots of the growing plants. These substrates are porous with micropores which store water and macropores which facilitate drainage and air entry. Effect of moisture on acoustic absorption is studied for two lightweight...

Applied Acoustics, 2021, 180, pp.108108 (12). ⟨10.1016/j.apacoust.2021.108108⟩. ⟨hal-03309599v2⟩

  • Communication dans un congrès

Understanding the vibrotactile feedback of the electric guitar: Methodology for a physical and perceptual study

Paul Cambourian, Oscar Gal, Arthur Paté, Simon Benacchio, Jerome O. Vasseur

The purpose of this paper is to report on an ongoing experimental work on vibratory feedback perception, in the case of the solid body electric guitar. The aim of this work is to understand the link between effective vibrotactile information transmitted to the body of the musician, through a...

AM '21: Audio Mostly 2021, Sep 2021, Trento (virtual), Italy. pp.268-271, ⟨10.1145/3478384.3478417⟩. ⟨hal-03541931⟩

  • Article dans une revue

Fano resonance between stokes and anti-stokes Brillouin scattering

Kwanto Lai, Daniel Finkelstein-Shapiro, Sebastian Lehmann, Arnaud Devos, Pierre-Adrien Mante

In recent years, the manipulation of Fano resonances in the time domain has unlocked deep insights into a broad spectrum of systems’ coherent dynamics. Here, inelastic scattering of light with coherent acoustic phonons is harnessed to achieve complex Fano resonances. The sudden change of phonon...

Physical Review Research, 2021, 3 (3), pp.L032010. ⟨10.1103/physrevresearch.3.l032010⟩. ⟨hal-03282287⟩

  • Article dans une revue

Stochastic Resource Optimization of Random Access for Transmitters with Correlated Activation

Ce Zheng, Malcolm Egan, Laurent Clavier, Anders E Kalør, Petar Popovski

For a range of scenarios arising in sensor networks, control and edge computing, communication is event-triggered; that is, in response to the environment of the communicating devices. A key feature of device activity in this setting is correlation, which is particularly relevant for sensing of...

IEEE Communications Letters, 2021, 25 (9), pp.3055-3059. ⟨10.1109/LCOMM.2021.3090110⟩. ⟨hal-03212813⟩