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Polyethylene (PE) and polypropylene (PP) are the two most widely produced plastics today, but they rank among the least recycled. Objects made from PE and PP, such as bags, detergent bottles, cosmetics containers, or milk bottles to cite a few, are difficult to rapidly sort at recycling facilities. It would thus be ideal to directly reuse blends of PE and PP.

Starting in November, the teams of seven joint research units of ESPCI Paris – PSL will occupy state-of-the-art laboratories, marking a major turning point in the school’s history.

The interaction of light with matter lies at the heart of quantum technologies: the high selectivity of laser light allows for precise control of the quantum state of atoms. This principle underlies the use of rare-earth-ion-doped crystals, in which atomic impurities benefit from structures that ensure the protection of their quantum properties. These materials are currently experiencing remarkable growth with numerous applications such as high-speed information processing, quantum memories and converters, and metrology.

With 140 years of history, a renovation project for its Parisian campus, a 5-year strategy, involvement in the PSL University, and commitment to ecological transition, the years 2022-2023 have been filled with projects and achievements for ESPCI Paris – PSL in fulfilling its missions of education, research, innovation, and student life.

Guillaume Pakula, the ’Founder’ of Projet Celsius, a scientific and educational consulting firm specializing in environmental issues, graduated from ESPCI in 2016. In January 2023, he conducted a highly successful course on ecological transition within the school.