One of the key limitations of the direct imaging of exoplanets at small angular separations are quasi-static speckles that originate from evolving non-common path aberrations (NCPA) to which the primary adaptive optics system is inherently blind. The main focus of this thesis is the development and…

How is structural and functional brain development related to behavioral change in cognitive-control, impulse regulation, and socio-emotional functioning?

News, inspiration, background information and more about the Learning@LeidenUniversity vision on teaching and learning.

The Brain and Education lab is a research group in the Institute of Education and Child Studies at Leiden University, the Netherlands. Our group is embedded in the Educational Sciences research program and the Leiden Institute of Brain and Cognition.

Can we link multiple components from herbal extracts with their biological activities?

Promotors: W. Jiskoot; G.J. Witkamp, Co-promotor: M.R. Nejadnik

Dr. at the Department of organic chemistry, Wageningen University - the Nederlands

The specialisation Bio-Pharmaceutical Sciences and Industrial Pharmacy consists of 60 EC in Bio-Pharmaceutical Sciences and 60 EC in Industrial Pharmacy.

This thesis investigates reactive interfaces in surface science across three domains: heterogeneous catalysis, environmental nanoplastics, and two-dimensional materials.

Our current lifestyle is not sustainable, and we know it. Our carbon-based economy causes climate change, and our livestock threatens the rainforests. We also know what we ought to do to save the planet: decarbonize the economy and change our diet. However, too many people lack the moral motivation…

Europe's open borders are under pressure: Europe has an increasing number of Member States with governments calling for tighter border controls. Several political parties in the Netherlands are also calling for stricter border controls, among other things, to reduce the number of asylum seekers. Yet,…

On 1 October 2020, Arianne de Leeuw defended her thesis 'Scheiding van zeggenschap en belang in de familiesfeer'. The doctoral research was supervised by Prof. F. Sonneveldt and Prof. A.O. Lubbers.

PhD defence

In this research group, headed by Bob Van de Water, cell signaling programs that underlie adverse drug reactions as well as cancer development and progression are unraveled. Adverse drug reactions involve cell injury in critical target organ cells which leads to the activation of cellular stress response…

Plants, algae and cyanobacteria have the amazing capacity to perform delicate photophysical and photochemical processes of light capture, excitation transfer, charge separation and catalysis in fluctuating living environments. As a consequence, photosynthetic proteins and membranes form dynamic architectures.…

The Schengen countries officially abolished border controls, but checks actually still exist. Maartje van der Woude has written a book about these veiled border controls: ‘The danger is that Schengen will have lots of borders, just not visible ones.’

The filamentous bacteria Streptomyces are widespread inhabitants of terrestrial soils.

Questionnaires or concentration tasks can be used to screen for anxiety, but so too can EEG recordings – at least indirectly. The frequent mind wandering of anxious people can also be seen on MRI scans. These are just some of the findings of clinical neuropsychologist Dana van Son. PhD defence on 24…

Migration and crime are in the spotlight in society. Within the Institute for Criminal Law and Criminology, research in this area has strongly developed in recent years. The concept of Crimmigration is central to this.

Alexander Kros studies supramolecular systems in a biological environment. The unifying theme between the projects in my lab is specific molecular recognition, i.e. the intermolecular interaction between complementary molecules with high affinity and selectivity. Studying, imitating and dissecting processes…

On 16 June 2020, Andrea Varga defended her thesis 'Establishing State Responsibility in the Absence of Effective Government'. The doctoral research was supervised by Prof. N.J. Schrijver and Prof. F. Baetens (University of Oslo).

This study seeks to identify suitable local environments conditions for the objects displayed at the Jordanian museums using the proper methods in order to contribute to the stabilization of these objects.

In order to optimize treatment, it is necessary to closely monitor and manage the patient’s health status by means of ‘precision diagnostics, personalized prognosis and targeted therapy’. The specialisation combines the techniques and applications of these sensing (monitoring) and stimulation techniques.…

This article provides a comprehensive analysis of the Islamic State's use of images taken by drones, drawing on a dataset of ISIS propaganda images from October 2016 to December 2018.

Promotores: Prof.dr. T.H.W. Bäck, Prof.dr. M. Bongards (Cologne University)

Eduard Fosch-Villaronga, Associate Professor at eLaw, contributed to 'Cyber–Physical–Human Systems', a book exploring the latest developments in interactions between cyber–physical systems and humans.

Intrigued by the way cells autonomously regulate their fate, we strive to understand and visualize cellular processes as the basis of Cell Signaling.

In Microbial Sciences, we perform multidisciplinary research to understand the structure and function of microbes at all levels of biological organization, from small molecules and cellular structures at atomic resolution to multicellular communities.

The goal of the MODOMA-project is to create a computer model of language acquisition.

Key publications of the Barz Lab

Understanding the formation and preservation of Pleistocene fire traces through laboratory-based experimental research

Synthetic microswimmers take an important place within the interdisciplinary field of active soft matter.

Here we share findings into the effectiveness of the Designing Your Life education at Leiden University. Our study indicates that DYL education has a positive effect on students’ confidence and competencies.

The following editorial comments were recently published in the Common Market Law Review.

Het Empower your PhD-project wil bereiken dat Leidse promovendi meer zelfregie krijgen over hun persoonlijke en loopbaanontwikkeling.

Van Vark defended her dissertation 'Separation and immersion: the changing role of the armed forces in Northwestern liberal democracies’ on 17 October 2025. The doctoral research was supervised by Maartje van der Woude and Erwin Muller.

The project examines the political conflict in the Red River Valley of Louisiana between the majority-black Republican Party and the overwhelmingly white Democratic Party by studying the composition and actions of each party.

At the Sport Data Center, five research themes are explored.

IAt the Criminal Justice Public Lecture on 20 April, Professor of Law and Society Maartje van der Woude spoke about her research into decisions and practice in relation to intra-Schengen border areas and the free movement of persons. The thinking behind the Schengen area is that where the external borders…

Beginning teachers often experience difficulties making activating lessons. This study investigates how and if the practical teaching model can offer them a hand in learning to design lessons.

What made the early Islamic empire so successful and have we missed the story by neglecting crucial evidence? The 7th-century Arab conquests changed the socio-political configurations in the Mediterranean and Eurasia forever. Yet we do not really know how the Arabs managed to gain dominance of this…

We aim to provide new insights relating to the spectacular multi-cellular life cycle of streptomycetes and other actinobacteria.

An overview of the research at the Biologics Formulation group

Lecture, European Union Seminar

This research note argues that the “lone wolf” typology should be fundamentally reconsidered.

This paper develops a novel theoretical framework for the conduct of postmortems after major foreign policy surprises for the European Union and its member states.

Professor Ariadne Schmidt and Associate Professor Arie van Steensel (University of Groningen) have produced A Companion to Medieval and Early Modern Leiden, the first English-language history of Leiden. Mayor Peter Heijkoop received the first copy.