Our staff and students serve on task forces that aim to translate key Una Europa themes into concrete actions.

This book sheds new light on domestic forced migration by examining the experiences of American-born slave migrants from a comparative perspective.

Promotor: T. H. Oosterkamp

The way organisms develop from the initial single-cellular state to a complex final assembly like the human body, and how the final body is maintained throughout life, is one of the greatest mysteries and it’s understanding one of the biggest scientific challenges.

Promotor: Prof.dr. T. Schmidt

In this thesis, we show how MRFM can usefully contribute to the field of condensed-matter.

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.

Comparison across jurisdictions is one way of assessing the appropriateness of lethal force resulting from the actions of law enforcement agencies. This article sets out a vision for a global use of force monitor that can enable meaningful comparisons between law enforcement agencies. It examines some…

Promotor: T.H. Oosterkamp

In this thesis, we describe the latest advances in SQUID-detected Magnetic Resonance Force Microscopy (MRFM).

On 9 May 2018, Roy van Keulen defended his doctoral thesis 'Digital Force: Life, Liberty & Livelihood in the Information Age'. The doctoral research was supervised by Prof. dr. A. Ellian.

In this dissertation, we work towards an experiment in which we aim to bring a micrometer sized magnet at the tip of a soft cantilever into a superposition.

For each living organism health is ensured by correct functioning of its cells. Cells therefore have elaborate methods for regulation of their proteins.

This research aims to investigate how different social forces interact with hydropolitics in the Eastern Nile Basin and what are the constraints of engagement.

A story of Two Mosuls, The Resurrection of the Iraqi Armed Forces and the military defeat of ISIS. In this article, published in the Journal of Strategic Studies, the authors Maarten Broekhof, Martijn Kitzen and Frans Osinga discuss the military adaptation by the Iraqi armed forces and their role in…

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.

This research examines the social, political, and cultural forces that structure people’s responses towards accented speech, and further uses the accent as a focal point to theorize the interrelation between language and body.

Pericytes, the mural cells of blood microvessels, are important regulators of vascular morphogenesis and function that have been postulated to mechanically control microvascular diameter through as yet unknown mechanisms.

On 9 January 2019, Willem van der Muur defended his thesis 'Land rights and the forces of adat in democratizing Indonesia'. The doctoral research was supervised by Prof. dr. A.W. Bedner and Prof. dr. J.M. Otto.

During times of domestic turmoil, the use of force abroad becomes an appealing strategy to US presidents in hopes of diverting attention away from internal conditions and toward a foreign policy success.

How have the armed forces of the United Kingdom, the Netherlands and Belgium adapted to the OMLT task in Afghanistan, and what institutional changes have materialised as a consequence of this adaptation?

This thesis consists of two subjects, that are both a consequence of radiation pressure.

Leiden researchers discovered that North Korean labourers are being forced to work on a large scale in Poland. Professor of Korea Studies Remco Breuker will present a report on the abuses in Poland at the ‘Slaves To The System’ conference on 6 July.

Proteins organize themselves around our body cells through a self-induced force. They indent the cell membrane, which makes them roll towards each other. This discovery provides new insights into processes like nutritional uptake and brain signaling, as well as into such diseases as Alzheimer’s. Publication…

In this thesis, we used genetically engineered mouse models and a variety of cell-culture based assays to identify genes and pathways that are involved in the development and treatment of invasive lobular carcinoma (ILC).

Political scientist Corinna Jentzsch (Leiden University) about the organisation of rebel and government auxiliaries in the civil war in Mozambique (1976–1992).

William Lippert investigates the effect of delegation to an agreement executor on success of conventional arms control agreements in Europe.

In this thesis, we describe the potential of cell mechanical phenotyping for immune cell characterization, diagnosis, drug testing, as well as treatment of disease.

The civil lawsuit against the Congregation of 'Onze Lieve Vrouw van Liefde van de Goede Herder' starts this week. A total of 19 women, aged from 62 to 91, together with the women’s rights foundation Clara Wichmann wants recognition through the courts that there was a situation of forced labour at youth…

Dit proefschrift beschrijft een collectie aan alternatieve strategieën voor het begrijpen, ontwerpen en toepassen van lipide nanosystemen, waarin de rol van de bio-nano interacties centraal staan. In het bijzonder wordt gekeken naar de interactie van RNA-lipide nanosystemen, bekend van de toepassing…

Microneedles represent promising tools for delivery of drugs to the skin. However, before these microneedles can be used in clinical practice, it is essential to understand the process of skin penetration by these microneedles.

Following news reports about racist comments made by Rotterdam police officers in a WhatsApp group, racism within the police force is back in the spotlight. ‘Dealing with this issue is a matter of urgency’, says Professor of Immigration Law Peter Rodrigues.

Vertrekkend vanuit een communicatief perspectief en concentrerend op mediatiseringsprocessen, formuleert deze dissertatie een alternatief voor het probleem van equivociteit binnen de studie naar populaire muziek.

Do objectively correct solutions to ethical dilemmas exist? Or is ethics always a matter of your opinion against my opinion? How do you know what to do? What kind of thing is ethics anyway? Can you be an expert in ethics?

De incubatietijd (van infectie tot de eerste symptomen) en latente periode (van infectie tot de start van besmettelijkheid) zijn cruciaal voor het informeren van controle maatregelen aan het begin van een infectieziektenuitbraak. Een voorbeeld is de duur van quarantaine voor potentieel geïnfecteerden,…

The shortage of reception places has become so great that the Dutch cabinet decided this week to take the lead in designating reception places itself. It is unusual that the Government is taking this measure. Up to now, the cabinet had left the management to municipalities. But the shortage of places…

For some time blackbirds have been settling in towns as well as in woods. As a result, town blackbirds have now begun to develop differently from their counterparts in forests. These are the findings of the PhD research carried out by behavioural biologist Erwin Ripmeester who defends his dissertation…

Biological polymers, including proteins and the genome, undergo folding processes crucial for their proper functioning. Even slight changes in the folding structure of these biopolymers can have significant implications, leading to the development of various pathological conditions, such as neurodegenerative…

Strengthening a cancer patient's own immune system so that the body itself can better destroy cancer cells. This is at the heart of immunotherapy, the most promising progress in cancer treatment in recent years. In order to drive this development further, the Netherlands Cancer Institute-Antoni van…

A lecturer winning a prize, an expert appearing in the media or a professor giving their inaugural speech: these are faces we often see. But we rarely see the staff who work behind the scenes to make their work possible. They are now featured in the photo exhibition ‘The forces behind the faces’.

More than 30 members of Programme Committees, Faculty Councils and the University Council met online on 27 November with a mission: how can university co-participation work towards a more sustainable university in terms of education, research, and operations? The Leiden University Green Office and the…

Promotor: Prof.dr. T. Schmidt, Co-promotor: Dr. ir. S. J.T. van Noort

Companies in Poland employ North Korean forced labourers on a large scale. Some of these companies are supported by the European Union. These are the findings of a research team headed by Leiden Professor of Korean Studies Remco Breuker and employment lawyer Imke van Gardingen. The study is still ongoing…

On 21 June, Jorrit Rijpma spoke at the first meeting of the Task Force on a European Border and Coast Guard, established by the Centre for European Policy Studies in Brussels.

Due to the tightness of the labour market, staff shortages are on the rise in many sectors. One solution often mentioned in the policy debate is that people should work more hours per week; the part-time factor should increase. Another possibility mentioned these days in the United States, is to increase…