Research News

The age of Jupiter's Great Red Spot is determined

Researchers from the Physics Department of the UPC have analyzed historical observations from the 17th century of Jupiter's Great Red Spot in collaboration with the Barcelona Supercomputing Center (BSC) and the University of the Basque Country (UPV/EHU)

Development of novel wall models for Large Eddy Simulation

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

Wireless control of magnetism in artificial multiferroic materials by visible light for next-generation magneto-optical devices

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

Fish schools are regulated by selection on social interactions and speed-induced leadership

Physics department researchers contribute to a study on the behavior of schools of fish published as a cover story in the journal PNAS

High-velocity particles thermally transform from quantum to classical ones crossing the anomaly temperature

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.

Study of the structural dynamics in metallic materials in the vitreous state

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.

Synergy of Interferometric SAR and Machine/Deep Learning to Assess Natural Hazards

S. Mohammad Mirmazloumi defended his thesis co-supervised by Michele Crosetto and Oriol Monserrat on January 30, 2024 at the Baix Llobregat Campus in the Telecommunications Technology Center of Catalonia (CTTC). The thesis is entitled "Advanced Modeling of InSAR Time Series for Ground Displacement Hazard Assessment".