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What is a perfect fluid? It is a theoretical model of a fluid that allows us to assume that the fluid is not viscous, that it does not conduct heat, that it is incompressible and does not create vortices. It is therefore an approximation of reality that simplifies theoretical predictions of fluid flows. For the first time, an international team has experimentally demonstrated this same behaviour for light immersed in a medium of low refractive index.

On 9 June 2023, the NISM and naXys Institutes, the Physics and Chemistry Departments and the Namur Research College were delighted to welcome Prof. Jean-Luc Brédas from the University of Arizona. A prestigious speaker of international renown, Prof. Brédas completed his doctoral thesis with Prof. Jean-Marie André at the University of Namur.

This is a technical and scientific feat that has just been patented at the UNamur. Researchers from the Laboratory of Analysis by Nuclear Reactions (LARN), the Department of Physics of UNamur (NISM Institute) and the spin-off Innovative Coating Solutions (ICS) have succeeded in developing a carbon-based coating with innovative properties that can be used in a wide range of fields, including fuel cells, decoration, and mechanical parts for automobiles.

On 21 and 22 September 2023, for the 4th year running, Belgian researchers came together for the bePOM conference. The format was original, with a virtual day and a hybrid day combining virtual and face-to-face sessions. A great success, and a Belgian network that is growing from strength to strength.

In a new study published in February 2023 in the Journal of Luminescence, an international group of scientists led by Sébastien Mouchet from UNamur, reported the previously unknown fluorescence properties of transparent insect wings. This research highlights the valuable information that can be obtained from advanced optical characterisation techniques.

Dr. Sébastien Mouchet, a researcher at UNamur and member of the NISM and ILEE Institutes, has just published the results of research focusing on the effects of pollution on coral reef fish in MDPI-Optics. The findings of the international, multidisciplinary team lead to crucial conclusions with implications for the health of marine ecosystems.

Contacts Fulgence DELLEAUX +32 (0)81 72 41 93 fulgence.delleaux@unamur.be Jean-François NIEUS +32 (0)81 72 41 94 jean-francois.nieus@unamur.be

To restore an old book correctly, it is essential to know the secrets of its manufacture and the reasons for its deterioration. Thanks to the King Baudouin Foundation's Jean-Jacques Comhaire Fund, the restoration workshop of the Moretus Plantin University Library has launched a new research project on parchment bindings in the Southern Netherlands in the 16th and 17th centuries. The aim is to gain a better understanding in order to improve conservation.

This is a first at the UNamur: a team of archaeologists will soon be testing an experimental protocol to reproduce the process of shaping glass in Roman times. Entitled Specularia (Latin for "glass"), this project has the support of several associations and companies, including AGC Glass Europe.

On 15 and 16 July, as part of the Gallo-Roman Rendezvous, the Specularia research project, run by the University of Namur and the Malagne Archaeopark, will be put through its paces in Malagne. This unique and exceptional experiment will give visitors a hands-on opportunity to discover what experimental archaeology is all about and to witness the different stages in the production of Roman window glass. This life-size experiment is part of the second phase of the Spécularia research project led by Géraldine Frère, a doctoral researcher in archaeology at the Institut Patrimoines, Transmissions, Héritages (PaTHs).

Since 2019, the Federal Science Policy (BELSPO) has been funding FED-tWIN research programmes, run jointly by Federal Scientific Establishments and universities throughout Belgium. UNamur has been awarded two of them. One for the PraME research centre dedicated to the study of medieval writing practices and linked to the PaTHs Institute.