Cosmologists have many possible models for the Universe, of which only one can be true. A new flowchart will eliminate some of them when two specific Universe features are accurately measured. Publication in Physical Review D on 7 November.

Two Leiden physicists took part in the Lindau conference in Germany from 26 June to 1 July. They met Nobel prize winners from their field.

Three of the four Heineken Young Scientists Awards for 2022 have gone to researchers from Leiden: chronobiologist Laura Kervezee, physicist Jordi Tura i Brugués and health psychologist Liesbeth van Vliet.

Using 2D materials, physics student Romme van der Kemp developed a nanochip that is extremely small ánd scalable. This is needed to make all kinds of technologies better, faster and smaller. He has been nominated for the FWN Young Talent Award 2023 for his research.

Electric noise can be useful for scientists but inconvenient for chip manufacturers. They do share a wish to predict the amount of noise. PhD student Sumit Tewari overturns a century-old law relating noise to current. He defends his thesis on March 27th.

Ten Leiden students have received a prize from the Royal Holland Society of Sciences and Humanities (KHMW). They were nominated by their degree programme. Who are these students?

Research on quantum computers and Islamic charities: two Leiden researchers have received a Consolidator Grant from the European Research Council.

Leiden physicists found a surprising interaction between electrons and a resist layer. The resist appears to charge and discharge due to incoming electrons. Publication in Physical Review Letters.

The standard approach to build a quantum computer with Majoranas as building blocks is to convert them into qubits. However, a promising application of quantum computing—quantum chemistry—would require these qubits to be converted again into so-called fermions. Physicists from Leiden and Delft suggest…

Leiden physicist Milan Allan and his group have discovered an apparent paradox within a material that has zero electrical resistance. They measured trapped charges, while charges should in theory keep flowing in the absence of resistance. The discovery could provide a missing piece of one of the big…

In a global effort, quantum computers are rapidly being developed. In the meantime, researchers have to learn how to write code for these devices, which are fundamentally different from conventional computers. A collaboration of scientists led by Google, and including physicists from Leiden and Delft,…

Three researchers from Leiden University have received awards in the Quantum Technology programme within the National Growth Fund, organised by NWO in collaboration with Quantum Delta NL. Read more about these three futuristic projects.

The inner city of Leiden has gained three new wall formulas. On Wednesday 22 November at 15:30 in the Klein Auditorium, alderman Robert Strijk will reveal the paintings of Lorentz contraction, Oort constants and electron spin.

The bachelor education programmes of Physics and Astronomy in Leiden combined have the highest percentage female first year students in The Netherlands, according to numbers published by the Dutch Journal of Physics.

Two research projects with researchers from Leiden University have been awarded a Dutch Research Council (NWO) Open Competition Domain Science-M programme grant. These grants fund curiosity-driven, fundamental research in the Science domain.

Physicists at Leiden University are developing smart chips that can be programmed with light. These chips are more energy-efficient than traditional chips because they do not require a constant power supply. For this research, they will receive funding in the coming years from the Dutch Research Council…

Lecture, Ancient History Research Seminar

Our research regularly receives attention in the (Dutch) popular media. Here is an overview.

In welke mate hebben domaniale structuren de machtsvorming en nederzettingsontwikkeling in en van het gewest Holland bepaald?

What is the first thing you think of when you hear the word UN? Is it just the Security Council and the ‘blue helmets’ or is there more to it? These are some of the questions tackled by the Chair’s research group.

On 23 and 24 November scholars working on European Justice and Home Affairs, united at the European University Institute in Florence on the occassion of the 25th year jubilee of the Area of Freedom, Security and Justice. The EU policy area covering migration, asylum and criminal justice cooperation.

Book presentation

On March 13, Dr. Erik Deul passed away at the age of 67. He leaves behind his wife Wilma, children Caroline and Wouter, and grandchildren Joris, Stach, Viggo, Archie and and a granddaughter expected later this year. Erik served as head of ICT at Leiden Observatory for 35 years, and later also at the…

Students of the Biology minor course Molecular Design have successfully boosted their skills in collaboration, research and writing with the recently developed E-learning Skills Platform. The biology students and their teachers greatly value the initiative. ‘Sometimes I couldn’t believe what progress…

It was more than two years in the making, but despite the delays, giving up was not an option. In May, eighteen staff members of LUCAS and the Faculty of Archaeology visited NIMAR.

Complex research with a generous sprinkling of jargon: PhD defences can be difficult for non-experts to follow. In the compulsory new lay talk, PhD candidates begin by explaining their dissertation in words of one syllable. And it’s not just the PhD’s family and friends who appreciate this.

Over 30 ambassadors strengthened their ties with researchers and university leaders in a recent visit to Leiden University. Cross-border collaboration (both literal and figurative) was the theme of presentations and a tour of the Hortus botanicus.

The thesis “Exit Peter Paul? Divergente toezichthoudersaansprakelijkheid in de Europese Unie voor falend financieel toezicht, bezien vanuit het Europeesrechtelijke beginsel van effectieve rechtsbescherming” (Exit Peter Paul? Divergent supervisory liability in the European Union for failing financial…

Victims who claim damages from large corporations for the harm caused by an infringement of competition law are often powerless in the European Union. How could collective actions enhance their position? Zygimantas Juska will defend his doctoral thesis on 23 April.

The discovery in 2001 of the importance of microRNAs turned the world of molecular biology upside down. The small particles of RNA also attracted the attention of university lecturer Erno Vreugdenhil. Vreugdenhil: ‘Within five to ten years the first microRNA-directed medicines will come onto the mar…

Seksueel grensoverschrijdend gedrag en structurele sociale onveiligheid horen niet thuis in vrouwengevangenissen, blijkt uit onderzoek van Leidse onderzoekers Esther van Ginneken en Yara Abbing. Zij vinden dat er een ingrijpende cultuurverandering nodig is en doen aanbevelingen.

Audrey Heijns explored the mindset of alumnus Henri Borel. From 1894 to 1916 he was an interpreter of Chinese and later a government officer for Chinese affairs in the Dutch East Indies. Borel's way of 'translating' Chinese was both unique and inimitable. PhD defence on 28 June.

The thesis “De publieke prijs. Een onderzoek naar de verdeling van publiek geld via prijsvragen” (The public prize. A study of the allocation of public funds by way of competitions) was awarded the faculty Jongbloed prize 2016-2017 on 12 January.

It’s about much more than learning how to write a readable piece or give a presentation that doesn’t send the audience to sleep. The intensive Science Communication Summer School gives young scientists the chance to really make contact with the public.

Aya Ezawa bade farewell as Diversity Officer of Leiden University at a celebration in the Academy Building on 11 June. Since her appointment in 2019, she has been a tireless advocate for culture change and a champion for diversity, inclusion and equal opportunities for all.

In the course of 2020 the Faculty of Archaeology was bolstered by some new staff members. Due to the coronavirus situation, sadly, this went for a large part unnoticed. In a series of interviews we are catching up, giving the floor to our new colleagues. We give the floor to Dr Martin Berger, who joined…

The LUMC, Leiden University and The Hague University of Applied Sciences want to help health professionals support behaviour change in the population. Such change would help people live healthier lives and reduce their risk of disease. The Municipality of The Hague is supporting this educational project…

Would you like to organise a session during the biggest multidisciplinary event in Europe - the EuroScience Open Forum (ESOF) conference - to be held in Leiden from 13 to 16 July 2022? If so, send us your proposal! Archaeologist Corinne Hofman is one of the driving forces behind the conference and…

Museum Boerhaave commemorated the hundredth anniversary of Einstein’s Theory of General Relativity with the exhibition ‘Einstein & Friends’. The exhibition shined light on the famous physicist’s Dutch friends and his love for Leiden. A review featuring seven images can be found below.

What is freedom worth in times of hunger? ‘Beleg’ is a modern interpretation of Lucretia van Merken’s 1774 play. With five performances in Leiden’s Schouwburg theatre, the play is a prominent part of the Relief of Leiden celebrations, and Leiden alumni are playing a big role. Take a look behind the…

With its FestivOWL theme, Orientation Week Leiden (OWL) promises to be one big festival for new international students in Leiden.

Leiden archaeologists have been conducting research with students and local archaeologists in Oss (in the province of Brabant) for 50 years. An exhibition at Leiden University shows how these finds tell the region’s story.

Twenty-one dedicated teachers were awarded their Senior Teaching Qualification (SKO) on 21 January. Rector Magnificus Hester Bijl congratulated them in a ceremony in the Academy Building with an extra celebratory touch as the milestone of the 100th SKO certificate was reached.

What can you expect from studying in Leiden or The Hague? Which programme should you choose? Should you join a student association and will you need to find a room? Over 8,000 prospective students showed up at the Leiden University Open Day: a record. Here's what some of them had to say.

PhD defence

As of 1 June, Leiden University has appointed Sense Jan van der Molen as Professor Physics of Condensed matter. He investigates the unique electronic properties that arise when atomic thin layers are stacked on top of each other into new materials.

Computer scientist Tim Coopmans uses pen, paper and regular computers to simulate the best possible quantum computer. He tells about his research and how this helps make a useful quantum computer a reality a little bit sooner. ‘I hope I will get to see quantum computers contributing something really…