When you apply for admission, you’ll be asked to submit several documents.

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Polycyclic aromatic hydrocarbons (PAHs) are the most abundant class of organic compounds in space. The PAH field evolves from the constant interaction between experimentalists, theorists, modellers and observers. While laboratory research and quantum chemical calculations together set up the molecular…

This article, by Sara Perlstein, explores how perceived social acceptability shapes whether people talk about risks, showing that risk perceptions and conversations are socially negotiated rather than purely individual.

This is the application procedure for the physics summer school of Leiden University. It is part of the Leiden Institute of Physics (LION). Interested bachelor (BSc) students can apply through the online form, where they need to upload several documents. The application deadline is 25 May 2025.

This project explores the ongoing acceleration of overlapping systemic crises and security threats and their interactions with local, national, and regional processes in a closely interconnected world.

This programme aims to make the digitized archival sources of the Kerala and Tamil Nadu Archives more accessible to Indian and international scholars and to the widest possible audience, in particular to the people of Kerala.

Human language is constantly evolving with its linguistic structure being shaped by language users at both individual and population levels. Focusing on the interplay between processes of language acquisition and communicative need in shaping human languages, this thesis introduces a novel computational…

The Graduate School of Science offers PhD programmes spanning the entire spectrum of science from Mathematics to Environmental Science.

Artificial intelligence could help make the work of public sector organisations, professionals, policy- and decision makers more effective, more efficient, and ideally could make it more rationalised and evidence-based.

This study by artist Jonas Staal explores the development of propaganda art from the 20th to the 21st century.

The marine shipping industry is one of the strongest emitters of nitrogen oxides (NOx), a pollutant detrimental to ecology and human health. Over the last 20 years, the pollution produced by power plants, the industry sector, and cars has been decreasing.

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In human cells, a meter-long DNA is condensed inside a micrometer-sized cell nucleus. Simultaneously, the genetic code must remain accessible for its replication and transcription to functional proteins.

The current resurgence of whooping cough is alarming, and improved pertussis vaccines are thought to offer a solution. Outer membrane vesicle vaccines (omvPV) are potential vaccine candidates, but omvPV-induced humoral responses have not yet been characterized in detail.

On 27 May, Dimitra Stefoudi defended the thesis 'Legal and policy aspects of space big data: legal implications of the use of large amounts of space data – regulatory solutions and policy recommendations'. The doctoral research was supervised by Steven Truxal and Bart Custers.

This is an Erasmus+ International Credit Mobility project of the Faculty of Sciences with one partner in Ukraine.

The focus of our theoretical research is understanding the behaviour of soft condensed matter, physical matter which is deformed or structurally altered by thermal fluctuations or small stresses.

Focus in skin research

Business Process Model and Notation (BPMN) has become the standard for business processes diagrams.

Over the last decades, aviation safety has improved strongly. As a downside, airline pilots do not have as many opportunities to develop through experience the competencies that they need in critical situations.

We aim to unravel the molecular mechanisms involved in the transformation of eukaryotic cells by Agrobacterium.

Promotores: Prof.dr. G.W. Canters, Prof.dr. T.J. Aartsma

Eduard Fosch-Villaronga and Hadassah Drukarch from eLaw - Center for Law and Digital Technologies, recently published the book ‘AI for Healthcare Robotics’, published by CRC Press from Taylor and Francis Group in their AI for Everything Series.

The project 'EmbRace: The Embodiment of Racialization: Running Muslim Women and the Sense of Non-Belonging' investigates the embodied and sensorial dimension of the racialization of Muslims and its intersections with gender, class and religion.

Nietzsche has often been considered a thinker independent of the philosophy of his time and radically opposed to the concerns and concepts of modern and contemporary philosophy. But there is an increasing awareness of his sophisticated engagements with his contemporaries and of his philosophy's rich…

The place of women in Leiden University was not steadily established for a very long time. Their roles spanned beyond the realms of academics and students. Seeking equality with men, they fought to obtain the right to work, to study and teach at university, to attain high-level jobs and to vote.

What are the characteristics of a curriculum that stimulates the development of student agency in secondary education? How can teachers respond to different agency profiles of students, and what is the relationship with academic performance, well-being, and stress?

Promotor: Prof.dr. H.P. Spaink, Co-promotor: Prof.dr. A.H. Meijer

This thesis is a collection of experimental attempts to enhance photoluminescence of fluorescent molecules and quantum dots with single gold nanorods (GNRs) and relevant applications.

This commentary on the United Nations Convention Against Corruption discusses each provision of the treaty, traces the provisions’ drafting history, and explores their implementation in domestic legal systems.

Design of a Linguistic System for Interstellar Communication Based on Logic

On the 2nd of April, Eline Lismont successfully defended a doctoral thesis. Leiden University Centre for Linguistics congratulates Eline on this achievement!

Antonia Lamers, PhD at ICLON, researched how to create a TNE teaching and learning environment that is in line with the expectations of the British programmes offered to students in Oman.

Promotores: K.J. Batenburg, B. Koren

How can we understand the implementation of EU policy and what challenges are involved?

For a long time it has been thought that habitation and landscape organisation only changed significantly from the Roman Period onwards. However, many developments were already started long before Julius Caesar's Roman armies arrived in the southern Netherlands.

A monthly seminar on complex networks, aimed at scientists from all disciplines.

This article investigates the sources of legitimacy in multistakeholderism as a major alternative approach to intergovernmental global governance.

This volume contributes to the scholarly debate regarding the reception of Cicero and focuses on one particular moment in Cicero’s life: the period from Caesar's death (March 44 BCE) up to Cicero’s own death (December 43 BCE).

Understanding interactions in quantum many-body systems remains one of the most profound and difficult challenges in condensed matter physics.

The current project aims to revive the idea that sound inventories are structured according to a small set of universal principles by applying insights from current phonological theory and by making use of modern database technologies and data assessing methodologies.

Advanced mass spectrometry of glycosphingolipids takes the central stage in this thesis. Investigations focus on characterization of glycosphingolipid metabolism in health and disease with emphasis to the detection and accurate quantitation of known and so far unknown glycosphingolipids and closely…

Promotor: Prof.dr. P. Stevenhagen, Co-promotor: Prof. dr. B. de Smit

Pre-modern long-distance trade was fraught with risks which often created conflicts of interest. The ensuing disputes and the ways the actors involved dealt with them belong to the field of conflict management.

Hospital pharmacies face significant challenges: the demand for sterile drug reconstitutions is increasing, while specialized personnel remain scarce. Automation offers a potential solution, but its practical implementation in hospitals is still unclear.

This thesis tackles the difficulty of predicting the liver’s clinical response to novel therapies, a challenge arising from interspecies differences and limitations of existing in vitro models.

Embarking on a PhD trajectory and perhaps moving countries in order to do so is a big thing, and it can be hard to find the information you need. The info below ranges from formal rules to practical matters such as the need to look for housing.

This dissertation investigates Extended Lexical Units (ELUs), elements that are bigger than just one word and which are stored in the Lexicon.

Promotor: Prof.dr. J. Zaanen, A. Parnachev