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Sarath Radhakrishnan defended his thesis co-supervised by Oriol Lehmkuhl Barba and Daniel Mira Martinez on 10th of June at Campus UPC. Entitled “Non-equilibrium wall modeling in Large Eddy Simulation of high-speed transitional flows“, the thesis presents three novel methodologies for the development of wall models, two of which are based on Machine Learning

Researchers from the Department of Physics at Universitat Politècnica de Catalunya, together with scientists from Universitat Autònoma de Barcelona and the Instituto de Cerámica y Vidrio (CSIC), demonstrated an unprecedented reversible modulation of magnetism using low-intensity visible light in artificial multiferroic heterostructures at room temperature. Significant changes in the coercivity and squareness ratio of the hysteresis loops can be light-modulated, encouraging the development of novel low energy-consumption wireless magneto-optical devices

A thermal fading of the quantum behavior in the large-momenta and short-distance correlations is predicted for temperatures above the anomaly threshold, by unveiling the connection between excitations, thermodynamics, and correlations in many-body systems. A general analytic expression for the high-momentum tail of the particle momentum distribution, which is valid for an arbitrary interaction strength and temperature and smoothly connects the quantum and classical limits, is proposed.

Candidate Yajuan Duan defended the thesis on March 13, 2024. The thesis, co-supervised by Drs. Jichao Qiao (Northwestern Polythecnic University, Xi'an) and Eloi Pineda (UPC), shows how the structural dynamics and atomic mobility of metallic materials with non-crystalline structure evolves during thermal and mechanical treatments. This study allows improving the pre-processing of these materials to modify and improve their mechanical properties.