Machine learning cracks the oxidation states of crystal structures

Chemical engineers at EPFL have developed a machine-learning model that can predict a compound’s oxidation state, a property that is so essential that many chemists argue it must be included in the periodic table.

Unpaired Weyl point observed for first time in Weyl semimetal platinum gallium PtGa

All so-far experimentally determined Weyl semimetals (WSMs) have featured Weyl points—crossings of linearly dispersing energy bands of three-dimensional crystals—that appear in pairs in the momentum space. Now, NCCR MARVEL researchers have combined experimental and theoretical methods to show that the WSM platinum gallium PtGa features a singular, unpaired Weyl point surrounded by closed Weyl nodal walls (WNW). This is the first time that an unpaired electronic WP has been observed experimentally and the first time that electronic topological WNWs/surfaces have been experimentally reported in crystalline solids. The findings of teams led by Prof. Oleg Yazyev, Chair of Computational Condensed Matter Physics at EPFL and Prof. Ming Shi of the Spectroscopy of Novel Materials group at the Paul Scherrer Institute extend our understanding of basic topological physics and the application of Weyl semimetals into spintronics.

Δ-learning HDNNP model shows promise in (QM)ML/MM MD simulations of condensed-phase systems

The modelling of some molecular systems requires an explicit description of changes in the electronic structure. While quantum mechanics/molecular mechanics (QM/MM) molecular dynamics (MD) simulations have been developed for such cases, they are computationally expensive compared to fully classical simulations. In a paper recently published in the Journal of Chemical Theory and Computation, ETH Prof. Sereina Riniker, group leader in NCCR MARVEL Design and Discovery Project 1, and colleagues Lennard Böselt and Moritz Thürlemann show how using a machine learning (ML) approach that combines high-dimensional neural network potentials (HDNNPs) and Δ-learning reduces the cost of modelling while retaining accuracy in (QM)ML/MM MD simulations of condensed-phase systems.

A new collaboration points to the future of data

In collaboration with MARVEL and EPFL, the Paul Scherrer Institute (PSI) is officially expanding its own focus areas and establishing a new research division: Scientific Computing, Theory, and Data. Here researchers will increasingly focus on the development of new computer and data technology and its use in science. The new research division is PSI's sixth, joining five previously established divisions: Biology and Chemistry; Research with Neutrons and Muons; Nuclear Energy and Safety; Energy and Environment; and Photon Science.

#NCCRWomen — Meet three PhD students from NCCR MUST

To celebrate the 50th anniversary of women obtaining the right to vote in Switzerland, the 22 active NCCRs have joined forces in a campaign showing how in these 50 years women have come to occupy a central place in research in almost all scientific fields. During this campaign, these female researchers will be showing you who they are, what they do and why they are doing it.

Three new INSPIRE Potentials fellows will join MARVEL for their Master's research projects

We are happy to announce that Nanchen Dongfang (UZH), Emma Lumiaro (Aalto University) and Mathilde Franckel (ECPM, Strasbourg) were granted INSPIRE Potentials – MARVEL Master's Fellowships after the April 2021 call. The three women will join MARVEL labs for a 6-month Master's research project — congratulations!

Young Researchers’ Meeting (YRM) of the European Theoretical Spectroscopy Facility

Registration is open for the 17th edition of the Young Researchers’ Meeting (YRM) of the European Theoretical Spectroscopy Facility, which will be held in Cagliari (Italy) from 6 to 10 September 2021! The main sponsors of this conference are Psi-k, the École Polytechnique Fédérale de Lausanne and MARVEL.

MARVEL Junior Seminar — April 2025

The MARVEL Junior Seminars aim to intensify interactions between the MARVEL Junior scientists belonging to different research groups – this is held in hybrid mode, in order to maintain in-person contacts and allow off-campus attendees to follow the seminars remotely! We are pleased to propose the 66th MARVEL Junior Seminar:  Anna Paulish (Mathematics for materials modeling - MATMAT, EPFL) and Alessandro Carbone (Lab. of theory and simulation of materials - THEOS, EPFL) will present their research. 

Webinar: 5 career building programs for female scientists

This is a kind invitation to join a webinar on May 15, which offers a quick overview over the focus of five career building programs for female scientists in Swiss universities: CONNECT, feminno, FLP - Foster. Lead. Promote, REGARD, and Réseau romand de mentoring pour femmes. Training, mentoring and coaching in different institutions and for various profiles of female researchers.

2025 Summer camp for high-school students

The 1-week camp entitled Des atomes aux ordinateurs, à la découverte de la programmation scientifique is open to teenagers in the last two years of high-school, with no high-level in maths or physics prerequisite. A prior knowledge of the basics of programming is recommended. It is possible to acquire these notions independently if necessary (within 3-4 hours). Half of the seats are reserved for young women. In 2025, it will take place from 23 to 27 June at EPFL. Registrations are open from 3 March until 13 April.

Psi-k 2025 conference

Psi-k 2025 is the 7th general conference for the worldwide Psi-k community. Held every 5 years, this event is the largest worldwide in first-principles simulations. With more than 1200 participants attending the last edition, the conference is returning to Lausanne this year.  It promises to be the most exciting, defining event in the field, offering a stimulating and enjoyable atmosphere, in addition to a chance to explore the beautiful region around Lausanne and Lake Geneva.