News
Ferromagnetic superlattices for nanoscale hypersound control
Teams at C2N, working within an international collaboration, have developed Co/Pt multilayers combining magnetism and ultra-high-frequency acoustic vibrations — paving the way for future magnetoacoustic and quantum technologies. Scientists in France and Argentina have demonstrated that cobalt–platinum (Co/Pt) superlattices, …
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Paula Nuño Ruano, laureate of the “toutes disciplines” Science Prize awarded by the The Chancellerie des Universités de Paris
The Chancellerie des Universités de Paris has revealed the laureats of the 2025 solemn thesis prizes. The C2N warmly congratulates Paula Nuño Ruano, laureate of the “Toutes disciplines” Science Prize for her thesis entitled “Optomechanical Metamaterials on Silicon for Brillouin-Based …
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Towards a complete photonic integrated platform for mid-IR spectroscopy
The development of compact systems operating in the mid-infrared wavelength range is of high interest for spectroscopic and sensing applications. Interestingly, graded index Silicon Germanium (SiGe) photonic circuits possessed unique properties for the development of a complete photonic integrated platform …
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Bayesian continual learning and forgetting in neural networks
Biological synapses effortlessly balance memory retention and flexibility, yet artificial neural networks still struggle with the extremes of catastrophic forgetting and catastrophic remembering. Here, we introduce Metaplasticity from Synaptic Uncertainty (MESU), a Bayesian update rule that scales each parameter’s …
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When nanospheres organize, sound reshapes
Researchers from C2N and the Instituto de Ciencia de Materiales de Madrid have developed a cost-effective approach to block sound waves oscillating at billions of vibrations per second. By allowing tiny polystyrene spheres to self-assemble, they created a network …
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