PhD defence

World-famous among astronomers, humble, and averse to conventions. On 23 April, the Dutch biography about Henk van de Hulst was published. Biographer Dirk van Delft: ‘This remarkable man deserved a biography.’

Professor Marc Koper researches how you can use electrical energy to make or break chemical bonds. He has just been awarded a Spinoza Prize, the Netherlands’ highest personal science award, for his fundamental research into how this form of electrolysis works.

The Dutch Public Prosecution Office is investigating whether to prosecute care workers involved in the Vlaardingen foster child case. Mariëlle Bruning told ‘de Volkskrant’ it will be difficult: 'It must be established that the care worker knew about the abuse.'

Leiden chemist Marc Koper is the winner of the 2017 Faraday Medal for his significant contribution to electrochemistry, from fundamental science to practical application.

A recent collaborative paper between researchers from the Theoretical Chemistry & Catalysis and Surface Chemistry groups has been chosen by the renowned Physical Chemistry Chemical Physics journal as a

Solving a scientific problem after decades: it’s a long-lasting dream for many scientists. Consequently, the research of Leiden and Eindhoven chemists gained a lot of media attention, for instance from the Belgian news website VRT Nieuws and science website Phys.org.

While health data is essential for scientific research, that data also needs to be protected. In her doctoral thesis, Irith Kist found a balance between protecting the individual and exchanging health data.

As an interdisciplinary institute in the field of Security Studies, the Institute of Security and Global Affairs (ISGA) covers various topics in its research, one of which is the United Nations and the impact of this global organization in the world.

On Thursday 25 January 2018 the Europa Instituut in Leiden hosted a round table session with the title “Securing the rule of law in Poland: which role for Europe?”. It was a small meeting bringing high-level experts together under Chatham House Rule.

Verschillende bewoners in de kansarme wijk Poelenburg in Zaandam leven in angst en voelen zich geïntimideerd door de ondermijningsaanpak van de gemeente, waarbij misstanden als huisbetredingen zonder toestemming en achtervolgingen niet worden geschuwd. Fatma Çapkurt, universitair docent staats- en bestuursrecht,…

Public authorities fail to inform citizens, or inform them too little or too late, about the use of algorithmic profiling in administrative decisions. This is clear from research conducted by Anne Meuwese and Fatma Çapkurt on the legally and practically responsible use of profiling algorithms.

On February 18th Dr Gerrit Dusseldorp gave a talk about the Umhlatuzana Rock shelter in Kloof (South Africa). This site has preserved some of the earliest traces of Modern Humans and helps us understand how people in deep prehistory lived, survived and adapted. The talk was streamed by Arise creative…

A wind turbine near your home? The energy transition is not seen as just by all parties concerned. It’s essential to involve local residents, argues Emma ter Mors, social psychologist. As a researcher, she focuses on identifying factors that influence public acceptance of energy technologies. Isn't…

Using the MUSE instrument on ESO’s Very Large Telescope in Chile, an international team of scientists, including many Leiden astronomers, have conducted the deepest spectroscopic survey ever. They focused on the Hubble Ultra Deep Field, measuring distances and properties of 1600 very faint galaxies…

An international team of astronomers, with researchers at Leiden Observatory playing a leading role, has mapped the fuel for galaxy formation in the iconic Hubble Ultra Deep Field. The results of the research have been accepted for publication in The Astrophysical Journal.

One unravels the origin of the largest black holes in the universe, the other investigates the influence of stellar wind on the atmosphere of exoplanets. Both Elena Maria Rossi and Aline Vidotto receive a Vici grant for their research into the mysteries of the universe. ‘I have no idea yet how we can…

The annual LION Image award goes to the 30 micrometer long 3D printed microboat image that went viral earlier in October 2020, submitted by Rachel Doherty of the Daniela Kraft lab.

Leiden University celebrated the Relief of Leiden with the 3 October University. This year the University also took part in the festive parade, to promote 444.

A soap film with chemically distinct sides: it's the latest breakthrough in the research led by chemist Sylvestre Bonnet. This unique soap film, along with an innovative device capable of continuously producing new soap films, forms a crucial piece in the puzzle for the development of artificial pho…

A group of astronomers led by Leiden PhD student Sebastian Zieba has discovered using the James Webb Space Telescope (JWST) that the rocky exoplanet TRAPPIST-1 c has a thin atmosphere. Although the planet is nearly identical to Venus in size and temperature, and was expected to have a thick atmosphere,…

Tiny self-propelling spheres, measuring only micrometers, move faster over a hydrophobic silicone surface than they do over hydrophilic glass. 'Almost nobody had realised that the substrate matters', says Stefania Ketzetzi, the researcher who discovered the effect, researched it and explained it. She…

Astronomers led by Leiden PhD candidate Richelle van Capelleveen have, for the first time, discovered an exoplanet that has carved a bright gap in the protoplanetary disc around its star. This rare observation provides new insights into how young planets shape their surroundings.

It came as a shock to many people: one million plant and animal species are threatened to become extinct. But this number isn’t the most relevant aspect, argue Alexander van Oudenhoven, Koos Biesmeijer and three other experts in Dutch newspaper Trouw. ‘It is more important to realise that the fate of…

What do bats do at night when they’re not hunting? Using tiny GPS trackers, Leiden researchers discovered that pond bats spend a substantial portion of the night resting – often outdoors. This surprising insight could change the way we protect them.

The image of the Leiden microboat traveled all over the world, from the BBC up to Arab shipping blogs. But Daniela Kraft's research group has quite a few more different 3D printed microswimmers up their sleeves. Kraft receives a Vidi research grant for research into these variously shaped active par…

PhD student Thierry Rohmer received the Ernst Award 2009 of the Gesellschaft Deutscher Chemiker (GDCh) for his publication in the Proceedings of the National Academy of Science of the USA on the structure-function relation of the photoreceptor phytochrome. The prize was presented at the Annual Discussion…

Surface Reaction Barriometry: Methane Dissociation on Flat and Stepped Transition-Metal Surfaces.

Leiden University no longer wishes to collaborate with fossil fuel partners that are not demonstrably committed to achieving the Paris Agreement targets. Exceptions will be made only if a collaboration demonstrably contributes to the energy transition. This proposal by the Executive Board was discussed…

The Royal Netherlands Academy of Arts and Sciences (KNAW) has appointed 26 new members. Three of them are Leiden professors: Luuk de Ligt, Lisa Cheng and Marc Koper. The new Academy professors will be installed on 8 June.

This project investigates the causes of the major archaeological change in the period of 40.000-20.000 BC in South Africa.

On 28 November 2025, Leiden University and PLNT Leiden hosted “The Knowledge Orchard” - an event aimed at starting up/ enhancing interdisciplinary cooperation between academics at Leiden University, and improving collaboration between Leiden researchers and external partners in research and educatio…

Social, Economic and Organisational Psychology focuses on the application of scientific psychological knowledge of social processes within and between groups of people and individuals, in organisations, but also during economic and consumer decisions.

Crises like climate change and loss of biodiversity threaten our planet. That’s why sustainability is an important topic in research and education across Leiden University. On this website you read how scientists from many disciplines work together in researching sustainability.

As a student in the MSc Chemistry programme offered by the Leiden Institute of Chemistry (LIC) you will focus your studies on one of the two main research areas of the LIC. Students in the research area Chemical Biology will study fundamental biological and biomedical problems to understand physiological…

PhD defence

PhD defence

Xander Tielens, Professor of Physics and Chemistry of the Interstellar Space, has been awarded an ERC Advanced Grant to study polycyclic aromatic hydrocarbons (PAHs) in space. The combination of astronomical observations, computer models and lab research makes the research highly interdisciplinary.

From the energy transition in Namibia to sustainable jobs for young Nigerians, from African cookbooks to vodcasts on vintage Swahili booklets: during a recent visit by the Executive Board, staff from the African Studies Centre Leiden and the African Library presented their research, teaching and acquisition…