PhD Position in Materials Science (M/F)

Descrizione

PhD Position in Materials Science (M/F) Sintesi in italiano (traduzione automatica): L'organizzazione offre una posizione di dottorato in scienze dei materiali presso il cluster di ricerca Paris-Saclay, in collaborazione con i laboratori LPS e LMPS. Il candidato selezionato lavorerà su un progetto europeo, CONCERTO, focalizzato sullo sviluppo di leganti idraulici a basse emissioni di carbonio. Le principali mansioni includono lo studio dei meccanismi di idratazione dei leganti silico-magnesiani e l'analisi delle proprietà reologiche. È richiesta una laurea in scienze dei materiali o un campo correlato. Il lavoro si svolgerà in un ambiente internazionale e interdisciplinare, con accesso a piattaforme analitiche avanzate. The PhD thesis will take place within the Paris-Saclay research cluster, between the LPS and LMPS laboratories, in an international and interdisciplinary environment underpinned by the European project CONCERTO. The doctoral student will benefit from access to advanced analytical platforms. The Laboratoire de Physique des Solides is a joint research unit (UMR 8502) of Université Paris-Saclay and the CNRS. It is affiliated with the CNRS Institute of Physics and with the 28th section of the National Council of Universities. The LPS is a member of the Friedel-Jacquinot Federation, a structure coordinating physics research on the Moulon plateau in Orsay (Île-de-France). It brings together around one hundred researchers and lecturer-researchers, both experimentalists and theoreticians, and research activities are supported by approximately sixty engineers, technicians and administrative staff. The laboratory welcomes each year a large number of undergraduate and graduate students, including many doctoral students, as well as postdoctoral researchers and visiting scientists. The laboratory covers a broader range of topics than its name might suggest, and aims to address the full diversity of condensed matter physics. Research activities are organised around three main areas, each involving roughly the same number of scientists: New electronic states of matter Physical phenomena at reduced dimensions Soft matter and the physics-biology interface The first area brings together both experimental and theoretical studies relating to the properties of systems in which electronic correlations are generally strong, and which give rise to remarkable properties and unconventional electronic states such as superconductivity, magnetism, metal-insulator transitions, and so on. The second area encompasses activities falling under "nanosciences" in the broad sense. These are addressed here from the perspective of fundamental properties, when the dimensions of an object become as small as certain characteristic length scales (coherence length, mean free path, etc.). The third area extends the concept of "soft matter" to biological systems. Topics range from complex systems to living tissues, from liquid crystals to foams, and from polymers to granular systems. These physical studies sit at the interface with physical chemistry and biology. The research underlying the proposed thesis will be conductedIt within this third area. It should be noted that part of the work will be carried out at the LMPS (Laboratoire de Mécanique Paris-Saclay) of ENS Paris-Saclay. Rheology and Hydration of Low-Carbon Silica-Magnesium Cements from Ultramafic Rocks. Funding: European project Horizon Europe EIC-Pathfinder CONCERTO ( https://concerto-eic.eu/ ) 1. Scientific context and objectives Given the considerable carbon footprint of the cement industry, the development of alternative hydraulic binders is a major challenge for the ecological transition of construction materials. This PhD thesis is part of the European project CONCERTO (Horizon Europe EIC-Pathfinder), dedicated to the development of next-generation low-carbon hydraulic binders derived from ultramafic resources. The objective is to study the hydration mechanisms of silico-magnesian binders, from the very first dissolution reactions through to hardening and long-term mechanical performance. Particular attention will be paid to surface dissolution, nucleation and growth of hydrates, evolution of rheological properties, and to setting kinetics. Two complementary strategies will be explored to control and accelerate hydration: a) Effect of a mineral co-binder. The rapid dissolution of magnesium tends to generate silica-rich surface layers, passivating the reactive surface. The combination with a source of reactive alumina or silica (activated clays, aluminous residues such as aluminium-rich industrial by-products) will be studied in order to promote the formation of nucleating phases — magnesium silicates hydr Annuncio in inglese. Fonte: Euraxess (Commissione europea).