This PhD-thesis presents a study on micron-sized particles, so-called colloids. By controlling the chemical and physical properties of these particles, such as the interparticle interaction and the particles’ shape, colloids can act as building blocks that self-assembly into larger structures.

A tidal basin is an inland sea which is almost entirely enclosed by land and connected to the open sea by a tidal inlet. Through the tidal inlets interaction takes place between the tidal basin and the open sea.

In the first part of this thesis we study the geometry of folding patterns.

Promotor: A. Kros

Promotor: Prof.dr. W.Th.F. den Hollander, Co-promotor: R. Fernandez

This dissertation is a study of the view of the Neoplatonist Proclus (Athens, 411-485) on to what extent and how the changing and unreliable world of sense perception can itself be an object of scientific knowledge.

Promotor: Bas Edixhoven, Promotor: Qing Liu

Sewer pipes are an essential infrastructure in modern society and their proper operation is important for public health. To keep sewer pipes operational as much as possible, periodical inspections for defects are performed.

Large areas of space are filled by molecular clouds that consist of gas and dust grains that are the remnants of dead stars. When these clouds start collapsing, the decreasing temperature and increasing density cause gas particles to start accreting onto dust grain surfaces.

This is an Erasmus+ International Credit Mobility project of the Faculty of Science with Sichuan University in Chengdu.

This thesis investigates how cell shape and collective behavior influence the dynamics and structure of biological tissues, which are crucial for understanding processes like embryonic development, tissue regeneration, and metastasis.

Promotor: M.T.M. Koper, Co-promotor: J.B.F. Juurlink

The two-year Advanced Computing and Systems programme (120 EC) includes mandatory core courses and electives, as well as a Master's Thesis Research Project.

The master's specialisation Applied Mathematics at Leiden University focuses on both computational and fundamental aspects of analysis and probability. It’s also an ideal basis for a PhD degree. Applied Mathematics is an excellent choice if you have the aspiration to pursue a PhD degree

Promotores: P. Stevenhagen, L. van Geemen (Università degli studi di Milano), Co-Supervisor: Ronald M. van Luijk

Research in the van Exter lab focuses on quantum aspects of light and light-matter interaction. One of our long-term goals is to develop a reliable quantum memory, based on a single emitter in an open micro cavity.

Microneedle-based vaccination has several advantages over vaccination by using conventional hypodermic needles.

To be eligible for Astronomy and Business Studies at Leiden University, you must meet the following admission requirements.

To be eligible forAstronomy and Data Science at Leiden University, you must meet the following admission requirements.

To be eligible for Astronomy at Leiden University, you must meet the following admission requirements. PLEASE NOTE: The specialisation High-Tech Innovation starts in September 2026.

To be eligible for Astronomy and Science Communication and Society at Leiden University, you must meet the following admission requirements.

Many important topics in computer science, such as the correctness of software, the efficiency of algorithms and the modeling of complicated systems, depend on sound theoretical underpinnings. In the Theory group, we study these fundamental building blocks and develop verification methods to prove system…

To be eligible for Astronomy and Instrumentation at Leiden University, you must meet the following admission requirements.

To be eligible for Astronomy and Cosmology at Leiden University, you must meet the following admission requirements.

To be eligible for Astronomy Research at Leiden University, you must meet the following admission requirements.

On May 17th, Arthur Crucq succesfully defended his doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Arthur on this great result.

Knowledge and culture subproject 1:

To be eligible for Astronomy at Leiden University, you must meet the following admission requirements.

To be eligible for Astronomy and Education at Leiden University, you must meet the following admission requirements.

Many important topics in computer science, such as the correctness of software, the efficiency of algorithms and the modeling of complicated systems, depend on sound theoretical underpinnings. In the Theory group, we study these fundamental building blocks and develop verification methods to prove system…

On January 5, Rosa Winter will obtain her doctorate in arithmetic geometry. She researched solutions of equations that define so-called ‘del Pezzo surfaces’. ‘I like geometry because I can imagine and draw the shapes and objects,’ says Winter. ‘That makes abstract mathematics feel more tangible.’

The research programme Probability Theory focuses on probability theory and on operations research.

Prof.dr. P. Stevenhagen, Prof.dr. K. Belabas (Universite Bordeaux I)

The master's specialisation Methodology and Statistics in Psychology consists of three main parts: the mandatory and elective courses, a thesis and an internship.

Some examples of AI-research done at Leiden.

Leiden PhD student Peter Koymans has been declared ‘best mathematics PhD student’ by the Royal Dutch Mathematical Society (KWG). He received the prize at the Dutch Mathematical Congress (NMC) on 24 and 25 April. With his talk about his research into the Cohen-Lenstra conjecture, Koymans left eleven…

MRFM combines the principles of magnetic resonance and atomic force microscopy.

Coordination chemistry is the chemistry of metal atoms

Garth Dales from Lancaster University has been appointed Kloosterman Professor at the Mathematical Institute during the month of October 2017, as a guest of Marcel de Jeu.

Conference

Since 2000 the Leiden Student Council (LSR) yearly awards a prize for the best teacher of the university at the Dies Natalis.

Knowledge and culture subproject 3:

The main research theme in the group of Dennis Hetterscheid is to understand and mimic bioinorganic multi-electron processes that are relevant to our future energy infrastructure. Reduction of protons generates hydrogen that can be used as a chemical fuel. Alternatively to gaseous hydrogen, the reduction…

The van Exter group has an extensive history of prior research in classical and quantum optics. As former part of the group of Han Woerdman, we have studied topics as diverse as:

Combining geometry and number theory. That is what Dr Jan Vonk of the Institute of Mathematics receives a Vidi grant for today. ‘By fusing these two disciplines we may be able to solve a century-old mathematical problem.’

Djordjo Milovic has won the KWG award for PhD students during the 51st Dutch Mathematical Congress, which took place on 14 and 15 April 2015 in Leiden. Six PhD students were able to present their work during a minisymposium on April 15th.