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 From Louis de Broglie to your TV set, a hundred years of history...
The year 2023 marks one hundred years since the pioneering discoveries of Louis de Broglie, one of the fathers of quantum mechanics. His work, crowned by a Nobel Prize in Physics for the "discovery of the wave nature of the electron", showed that all particles behave like waves under certain conditions. Thus, when an electron is confined to a very small space, its fundamental wavelength decreases and its energy increases, in the same way that a piano string emits a higher-pitched sound when its length is reduced. This behavior inspired the first research, forty years ago, into semiconductor nanocrystals, nano-sized crystals (typically 3 to 20 nm) in which electrons are ultra-confined. Remarkably, some of these nanocrystals can emit light varying from red to green to blue simply by changing their size, but not their composition. These are now being used in the latest generation of televisions, as they offer a much richer color palette than previous technologies. Several decades may seem a long time to go from the first studies to consumer applications. In academic laboratories, it has been necessary to master the size of nanocrystals, requiring new synthesis processes, to passivate the surface of nanocrystals by adding a shell, and more recently to find the least toxic materials possible (excluding cadmium in particular). In the electronics industry, it required to work with totally new materials and objects, and dare to introduce them into heavy micro-technology processes. Research in the field of semiconductor nanocrystals remains very active, for lasers, photovoltaic cells and single-photon emitters, or for infrared photodetectors, as illustrated by one of the articles in this newsletter.
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Club EEA's Electronics section awards its 2023 thesis prize to Kathia Harrouche, for her thesis "Design and fabrication of GaN-based millimeter-wave field effect transistors". |
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This work proposes innovative solutions that can be implemented to resolve the critical limitations of GaN-based transistors operating at very high frequencies (> 40 GHz), paving the way for unprecedented performance in the millimeter-wave range. |
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Sabine Szunerits named to the National Order of the Legion d’Honneur |
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Sabine Szunerits, professor at the University of Lille and researcher at the IEMN, has been awarded the rank of Chevalier in the Ordre National de la Légion d'Honneur by a decree published in the Journal Officiel on July 14, 2023. |
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"Welcoming Internationals to Lille" international chair to work on acoustic clamps |
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Acoustic tweezers can be used to manipulate, organize and test the mechanical properties of microparticles and microorganisms. They can operate both in vivo and in vitro, in transparent or opaque media, and with forces several orders of magnitude greater than their optical or magnetic equivalents. |
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IEMN opens its doors to you! |
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Episode 4 of the Labs'Tour series takes you on a journey to the heart of RS2E's 17 laboratories. This video introduces the Hileores startup, research into energy storage microdevices, and takes you on a tour of the microfabrication plant, where devices are manufactured from A to Z. |
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Startup BioNaMeris / Patented technology for aquaculture |
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On May 31, 2023, the IEMN welcomed the members of the Lyderic cluster created at the end of 2022. |
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The ambition is to become a major player in R&D for telecommunications, healthcare, defense and security.
The cluster will also act as a project factory, open-lab and support for training initiatives. |
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Measuring the V2I channel in cell-free vehicle networks using the MaMIMOSA distributed channel sounder |
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In this paper, we present a small but realistic vehicular cell-free massive MIMO (multiple input, multiple output) architecture deployed at the University of Lille in a typical suburban environment, under both line-of-sight (LOS) and obstructed LOS (OLOS) shadowing conditions. |
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The first "Multi-Functional Materials: from Synthesis to Applications" workshop was held from June 27 to 29, 2023 at the Université Polytechnique Hauts-de-France |
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Over 120 participants took part, covering topics such as materials synthesis and physico-chemical characterization, optical and electrical characterization on macro/micro and nano scales, and ..... Targeted applications: health, energy, biology, transport. The environment at the heart of the topics: photovoltaics, CO2 emission reduction, green materials... |
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Moore's Law... how far? |
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Ever smaller, faster, more efficient... Emmanuel Dubois, a researcher at the IEMN, was interviewed in an article in La Recherche magazine entitled "Moore's Law... how far?" |
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The IndustriELLES collective, an initiative to change the image of industry among young girls and women |
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The collective is now recruiting new profiles, women and men, technicians and senior managers, throughout France, to become spokespeople in the media or on social networks, to mentor young girls, or to contribute to the sharing of best practices in terms of gender diversity. |
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Resonance Long-Lived Waves |
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Resonance: Long-Lived Waves, a new volume in the Interface Transmission Tutorial Book series, presents long-lived resonance properties for telecommunications. |
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You will no longer turn a deaf ear!!! |
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Towards a robotized cochlear implant. This technology is currently being used to robotize a cochlear implant in the ROBOCOP project. The aim here is to meet a need of the surgeon, who has no perception of what is happening in the cochlea during manual insertion, and a failed or incomplete insertion can lead to poor hearing performance post-operatively. |
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A successful combination of III-V nanowires and II-VI nanocrystals for mid-infrared photodetection |
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A collaboration between IEMN, Institut des Nanosciences de Paris, ESPCI and ONERA has reconciled the advantages of two competing technologies for the production of broadband photodetectors in the mid-infrared range. |
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Discover the portrait exhibition "the men and women who make IEMN". |
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Travelling exhibition presenting a series of portraits of women and men from the unit, with a dual focus on the laboratory's 30th anniversary and gender equality at IEMN. |
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© IEMN
Publishing Director: Thierry Mélin
Graphic design: Publishing Communication Multimedia Department
Technical realization: Network Information and Administration Service
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IEMN - CNRS UMR8520
Cité Scientifique - Avenue Henri Pointcaré - 59650 Villeneuve d'Ascq
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