Promotor: J. Zaanen

It has been a long-standing mystery how complex biological structures emerge from such seemingly uncoordinated building blocks as cells and tissues, in the presence of only minimal environmental guidance.

Mechanical forces are known to play an important role in bacterial colonies. In this dissertation, we study the self-organization at various stages of growing bacterial colonies, and focus on the mechanical effects of cell growth.

Promotor: Prof.dr. M.L. van Hecke, Co-Promotor: Prof. dr. V. Vitelli

Promotor: H.W. Lenstra

Our research is done at two different locations.

On Tuesday 19 December 2017 Anneloes Kuiper-Slendebroek defended her doctoral thesis 'Rechter over Grenzen' which deals with the application and interpretation of international law in Dutch private law. Supervisor is Martijn Polak, co-supervisor is Jeroen van der Weide.

We are interested in understanding the mechanics of soft materials, of which biological materials are prominent examples.

Inaugural lecture

Promotor: Prof.dr. P. Stevenhagen, Co-Promotor: Dr. J.H. Evertse

The key characteristic of active matter is the motion of an emergent collection (such as a flock of birds), which is driven by the consumption of energy by its active components (i.e. individual birds).

On 12 January 2022, Mirjam Franke defended the thesis 'Over de grens van de onrechtmatige daad'. The doctoral research was supervised by Prof. A.G. Castermans and Prof. J.H. Crijns.

Promotor: S.J. Edixhoven

Leiden University, Department of Economics

We study the interplay of topology and geometry with chirality for several passive and active systems, employing both analytical and numerical methods.

In specialist organ literature a negative verdict is given on organs and organ specialists from the 1930’s. Did the same verdict apply to Johan van Meurs’ (1903-1986) work? Which role does Van Meurs’ collection of organ specifications play in the historical research on the organ?

Promotor: S.J. Edixhoven Co-promotor: L. van Geemen, P. Parent

Dit rapport maakt deel uit van het project Receptenboek burgerparticipatie in opdracht van de Rijksdienst voor het Cultureel Erfgoed (RCE) en met steun van het Fonds voor Cultuurparticipatie.

In this thesis, I studied the origin and evolution of the non-thermal radiation in merging galaxy clusters.

PhD defence

The position of writing within the domain of artistic academic research is not self-evident. In academia, standard practice is to use writing for the transfer of knowledge: it is a means of communication. In the practice of (nonlinguistic) artistic research, the outcome is also often contextualized…

Promotor: Prof.dr. K.H. Kuijken, Co-Promotor: Dr. H.Hoekstra

How did the medieval manuscript develop as a physical object during the Twelfth Century Renaissance and what do these changes tell us about the intellectual culture of the period?

How does the extracellular matrix coordinate endothelial cell behavior during angiogenesis, and how do metabolic waste-products and matrix-degrading enzymes produced by the tumour modify the extracellular matrix so as the change the cellular coordination?

Foute taal? Bestaat niet!

Nematic liquid crystals form the key ingredients of most tv screens. The active version of these complex fluids forms a useful model for physicists to research the responses of active matter—like bacteria or traffic flows—to mechanical and geometrical cues. An international research team publishes their…

The role of transnational, non-institutional networks in the opening up of British transatlantic trade at the end of the 17th/beginning of the 18th century

Luca Giomi has the first results of his ERC consolidator grant. He discovered that epithelial cells move collectively but in different ways, depending on the scale you look at. It is hexatic at small scales, and becomes nematic at larger scales: it is a multiscale order. This collective movement of…

Op 22 september 2021 verschijnt de volgende publicatie van dr. Charlotte J.C. Broer: "Uitzicht op Oudwijk Bisschoppen, burggraven en het circa 1135 gestichte wereldlijke vrouwenstift in Oudwijk bij Utrecht in de twaalfde en dertiende eeuw". Voor meer informatie: http://www.broerendebruijn.nl/Oud…

This project sets out to map, document and analyze instances of squatting in Leiden from 1970 to 1990, in order to set up an online Digital Archive of Squatting in Leiden. This archive will function as an online resource for academic research, as well as a starting point for public activities such as…

From how litter spreads to which languages are spoken in Leiden and The Hague: over 50 interesting, surprising, complex and entertaining questions were sent in for the Citizen Science Project to mark our 444th anniversary.

Begin oktober vond de eerste Psychology Connected van dit nieuwe academische jaar weer plaats. Met de vallende herfstbladeren voelen velen zich ook somberder. Onderzoekers delen hoe je een winterdepressie verzacht, en hoe je als ouder het beste kunt omgaan met de depressieve klachten van je kind.

In de maanden maart, april en mei organiseerde het programma Transparantie in Informatie, van de ministeries van Economische Zaken en Klimaat (EZK) en Landbouw, Natuur en Voedselkwaliteit (LNV), gesprekken over de veranderopgave naar een Open Departement. De sessies hadden als doel om een eerlijk en…

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…

De vraag is hoe groot de dreiging van het rechts-extremisme is in Nederland? Nikki Sterkenburg spreekt hierover in Trouw en RTL Nieuws.

Last weekend, an article on data privacy appeared in Trouw. In this essay, Bram Klievink, Professor of Digitization and Public Policy at the FGGA, addresses the issue of data privacy. What are the downsides of the rules the tech giants have to abide by?

Zou je graag een hoofdstuk uit je proefschrift in informele setting willen bespreken? Heb je een onderzoeksidee dat je graag zou voorleggen aan vakgenoten? Neem dan contact op met ozsmed@hum.leidenuniv.nl. De Onderzoekschool organiseert sinds kort een seminarreeks waarin dergelijke onderwerpen in een…

On Good Friday (30 March) and Easter Sunday and Monday (1 and 2 April) most Leiden University premises are closed. Both the University Library and Wijnhaven Library will be open on Good Friday and on Saturday 31 March.

Universiteit Leiden en Unicef werken al 10 jaar samen om kennis over kinderrechten uit te breiden en te verspreiden. Ze verlengen deze samenwerking.

What did medieval scholars think of the books they read? In her inaugural lecture, Professor Mariken Teeuwen will talk about the texts they wrote in the margin.

In the week of 16 – 21 September, an international group of more than 50 scientists met at the Many Criteria Optimization and Decision Analysis (MACODA) workshop. They discussed many-criteria optimization, which is the searching for optimal solutions when one has to consider a larger number of criteria.…

The Indonesian government has been trying to enforce marriage and divorce laws for some time. These efforts are encountering resistance from both local communities and the Indonesian Supreme Court. PhD candidate Al Farabi investigated where this resistance comes from.

The formal handing over of the keys for the first stage of the Science Campus will take place on 23 February.

Statements made by Caroline van der Plas about nitrogen emissions and European law are incorrect: Armin Cuvyers on Dutch radio EenVandaag programme’s item ‘fact or fiction’.

Hoe kan het dat universele mensenrechten wereldwijd niet hetzelfde in de praktijk worden gebracht?

A respectable 5,023 runners took part in the Leiden Canal Run on Friday 5 April. They raised the sum of €22,302 for various Leiden charities.

What makes South Korean films successful? In the first part of the video series 'The World of the Korean Wave', University Lecturer Peter Verstraten discusses the recent success of South Korean cinema.

In 2009, the European Union adopted the Renewable Energy Directive (RED), mandating Member States to obtain 10% of all transport fuels from renewable sources by 2020.

The year is 2032 and the Arctic ice cap has melted causing new trade routes to emerge. This case is the focal point of the Young Diplomat Conference during which honours participants spend a weekend as diplomats solving disputes between countries.