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Affichage de 5701 à 5710 sur 16104

Article dans une revue

A New Photomechanical Molecular Switch Based on a Linear π-Conjugated System

Stéphane Lenfant, Yannick Viero, Christophe Krzeminski, Dominique Vuillaume, Dora Demeter, I. L. Dobra, Maiténa Oçafrain, Philippe Blanchard, Jean Roncali, C. van Dick, Jérôme Cornil

We report the electron-transport properties of a new photoaddressable molecular switch. The switching process relies on a new concept based on linear π-conjugated dynamic systems, in which the geometry and, hence, the electronic properties of an oligothiophene chain can be reversibly modified by…

Journal of Physical Chemistry C, 2017, 121 (22), pp.12416-12425. ⟨10.1021/acs.jpcc.7b01240⟩. ⟨hal-02564470⟩

Article dans une revue

Zero echo time MRI- only treatment planning for radiation therapy of brain tumors after resection

C. Boydev, B. Demol, David Pasquier, Hervé Saint-Jalmes, G. Delpon, N. Reynaert

Using magnetic resonance imaging (MRI) as the sole imaging modality for patient modeling in radiation therapy (RT) is a challenging task due to the need to derive electron density information from MRI and construct a so-called pseudo-computed tomography (pCT) image. We have previously published a…

Physica Medica European Journal of Medical Physics, 2017, 42, pp.332-338. ⟨10.1016/j.ejmp.2017.04.028⟩. ⟨hal-01671400⟩

Article dans une revue

Impact of Gate Drain Spacing on Low-Frequency Noise Performance of In Situ SiN Passivated InAlGaN/GaN MIS-HEMTs

Mehdi Rzin, Jean-Marc Routoure, Bruno Guillet, Laurence Méchin, Magali Morales, Cédric Lacam, Piero Gamarra, Pierre Ruterana, F Medjdoub

In this paper we investigated the gate–drain access region spacing (L GD) effect on electrical and noise performance of InAlGaN/GaN metal– insulator–semiconductor high electron mobility transistors (MIS-HEMTs) using in situ SiN cap layer as gate insulator. Different L GD of InAlGaN/GaN MIS-HEMTs…

IEEE Transactions on Electron Devices, 2017, 64 (7), pp.2820-2825. ⟨10.1109/TED.2017.2703809⟩. ⟨hal-01560627⟩

Article dans une revue

Atomic-scale structure of the glassy Ge 2 Sb 2 Te 5 phase change material: A quantitative assessment via first-principles molecular dynamics

Assil Bouzid, Guido Ori, Mauro Boero, Evelyne Lampin, Carlo Massobrio

The amorphous structure of the phase change material Ge2Sb2Te5 (GST) has been the object of controversial structural models. By employing first-principles molecular dynamics within density functional theory, we are able to obtain quantitative agreement with experimental structural findings for the…

Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2017, 96 (22), pp.224204. ⟨10.1103/PhysRevB.96.224204⟩. ⟨hal-02349392⟩

Communication dans un congrès

Wireless monitoring system for lightweight aircraft landing gear

Christophe Delebarre, Sébastien Grondel, Samuel Dupont, F Rouvarel, M Yoshida

Mass repartition onboard lightweight aircraft is a crucial problem as it may generate difficulties for the pilot during the landing phase. Being able for the pilot to land the plane properly is of course an important aspect for safety, but also for structure integrity. So the mass repartition…

18th International Conference on Research and Education in Mechatronics (REM 2017), Sep 2017, Wolfenbuettel, Germany. pp.1-6, ⟨10.1109/REM.2017.8075230⟩. ⟨hal-03549288⟩

Article dans une revue

High Frequency Acoustic On-Chip Integration for Particle Characterization and Manipulation in Microfluidics

Sizhe Li, Julien Carlier, Malika Toubal, Huiqin Liu, Pierre Campistron, Dorothee Callens, Georges Nassar, Bertrand Nongaillard, Shishang Guo

This letter presents a microfluidic device that integrates high frequency (650 MHz) bulk acoustic waves for the realization of particle handling on-chip. The core structure of the microfluidic chip is made up of a confocal lens, a vertical reflection wall, and a ZnO film transducer coupled with a…

Applied Physics Letters, 2017, 111 (16), pp.163503. ⟨10.1063/1.5003414⟩. ⟨hal-03258701⟩

Article dans une revue

Top-down Approach for the Direct Synthesis, Patterning, and Operation of Artificial Micromuscles on Flexible Substrates

Ali Maziz, Cedric Plesse, Caroline Soyer, Eric Cattan, Frederic Vidal

Recent progress in the field of microsystems on flexible substrates raises the need for alternatives to the stiffness of classical actuation technologies. This paper reports a top-down process to microfabricate soft conducting polymer actuators on substrates on which they ultimately operate. The…

ACS Applied Materials & Interfaces, 2016, 3, pp.1559-1564. ⟨10.1021/acsami.5b09577⟩. ⟨hal-02980109⟩

Article dans une revue

Interview: Joseph Agassi

Mauro Condé, Raffaele Pisano, Michael Segre

Joseph Agassi is an Israeli scholar born in Jerusalem on May 7, 1927. He has many books and articles published contributing to the fields of logic, scientific method, foundations of sciences, epistemology and, most importantly for this Journal, in the historiography of science. He studied with Karl…

Transversal: International Journal for the Historiography of Science, 2016, 1 (1), pp.116-119. ⟨10.24117/2526-2270.2016.i1.13⟩. ⟨hal-04509353⟩

Article dans une revue

Calculation of the similarity rate between images based on the local minima present Therein

Karl Hourany, Farouk Benmeddour, Emmanuel Moulin, Jamal Assaad, Youssef Zaatar

Image processing is a very vast field that includes both IT and applied mathematics. It is a discipline that studies the improvement and transformations of digital images hence permitting the improvement of the quality of these images and the extraction of information. The comparison of digital…

Lebanese Science Journal, 2016, 17 (2), pp.177-192. ⟨10.22453/LSJ-017.2.177192⟩. ⟨hal-04087365⟩

Thèse

Scalable digital-to-RF processor for multi-standard and multi-band low power wireless transmitter in 5 GHz and 60 GHz, Processeur numérique/RF adaptatif pour émetteur sans fil multi-bandes multi-standard faible consommation à 5 GHz et 60 GHz

Fikre Gebreyohannes

The vision of research into multi-standard and multi-band systems, architectures, and circuits has been to develop devices which can hope seamlessly from one network to the other while delivering excellent functionality in different radio access technologies.In this work, configurable transmitter…, Le domaine de la recherche dans les multi-standards, les systèmes multi-bandes, architectures, et circuits a été un thème populaire. La perspective est d'avoir des dispositifs qui peuvent être adaptés, parfaitement, aux différents réseaux tout en offrant d'excellentes fonctionnalités sur…

Micro and nanotechnologies/Microelectronics. Universite Lille 1; Isen-lille, 2016. English. ⟨NNT : ⟩. ⟨tel-04345185⟩