At the largest scales, two ingredients dictate the distribution of matter in the Universe. The first is dark matter, acting as an invisible scaffolding held together by gravitational forces.

Promotor: Promotor: W.Th.F. den Hollander, Co-promotor: V. Sidoravicius.

In this thesis unconventional tools based on fluidic interfaces were developed to study the surface and interfacial chemistry of graphene, to characterize the intrinsic properties of graphene, to disentangle the effects of substrate and of the environmental factors, and to improve handling protocols…

Stochastic resetting is simple enough to be approached analytically, yet modifies stochastic processes in a non-trivial way.

During my PhD research, I studied the photon statistics of light emitted by a microcavity that contains a single quantum dot (QD) on resonance.

For centuries astronomers studied the Universe by collecting light. Nowadays, we are living in times of great technological advancements, which allow us to explore our Universe in a new way - though gravitational wave radiation.

Promotores: W. Th. F. den Hollander, M.O. Heydenreich

Dark matter is one of the biggest mysteries of the Universe. Its properties cannot be explained with the known laws of physics and elementary particles.

The Copenhagen interpretation of quantum mechanics states that a measurement collapses a wavefunction onto an eigenstate of the corresponding measurement operator.

Why do black holes emit thermal radiation? And how does a closed quantum system thermalize?

We find ourselves in an era of transition, not just towards a more computing- and data-driven society but also away from unsustainable fossil fuels as an energy source.

Promotor: Prof.dr. E. F. van Dishoeck

Promotor: D. Bouwmeester, Co-promotor: D. Kraft

Promotor: R. Gill, Co-promotor: P. Massart

Promotor: Prof.dr. A. Achucarro

Molecular materials have been a subject of interest in fundamental research and applications for decades, and have been studied as bulk crystals, (thin) films and as individual molecules, due to the large variety in their properties. This dissertation explores pentacene crystals near the two-dimensional…

The overarching goal of this thesis is to set the foundations, but also make the first essential steps towards establishing a comprehensive, mesoscopic, hydrodynamic theory of epithelial tissues. The stage is set by an exhaustive study of topological defects in passive p-atic liquid crystals, singularities…

Materials with strongly correlated electrons show some of the most mysterious and exotic phases of quantum matter, such as unconventional superconductivity, quantum criticality and strange metal phase.

The ultimate goal of cosmologists is to find a cosmological model able to explain the current observational data.

Hot astrophysical plasma is ubiquitous in the Universe, from comets in our Solar system to the largest scale structures -- the cosmic web filaments. These hot plasmas, with the temperature of a few millions of degrees, are often observed in the X-ray wavelength range.

Verreweg de meeste studenten kiezen voor de masteropleiding Astronomy. Je kunt ook doorstromen naar de masteropleiding Physics of kiezen voor een masteropleiding aan een buitenlandse universiteit.

This thesis investigates catalytic reactions at the atomic scale using scanning tunneling microscopy (STM), with a focus on Fischer–Tropsch synthesis, a key industrial process that converts hydrogen and carbon monoxide into liquid fuels.

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.

De ‘Verdieping Bewaken en Beveiligen’ brengt verdieping aan op actuele gebeurtenissen en ontwikkelingen gerelateerd aan het stelsel Bewaken en Beveiligen.

This thesis attempts to interrogate post-1991-2015 political development in Ethiopia, focusing on the political discourses espoused by the government and opposition, using the discourse analysis method and securitization theory.

De complotten over corona ontwikkelen zich langs vertrouwde lijnen. Maar opmerkelijk is dat ze niet alleen floreren in de marge, maar in sommige landen in de hoogste regionen opduiken. Jelle van Buuren, universitair docent aan de Universiteit Leiden, onderzocht complottheorieën rondom het coronaviru…

Binnen het Institute of Security and Global Affairs is het onderzoek georganiseerd rond zeven domeinen:

De Verdieping Bewaken en Beveiligen brengt verdieping aan op actuele gebeurtenissen en ontwikkelingen gerelateerd aan het stelsel Bewaken en Beveiligen.

Een compacte maar theoretisch innovatieve ontdekkingstocht naar hoe Islamofobie en radicalisering op elkaar inhaken en elkaar versterken.

This pioneering project will answer this question by examining migrants through the eyes of the courts between 1600 and 1900. It aims to reveal patterns of continuity and change in: 1. Treatment of migrants by criminal courts; 2. Violence and conflicts between migrants and native born.

To get an idea of the science communication products and research that is possible, a few examples of student projects of recent years are shown below.

The mission of our group is understanding how science communication works to improve the interaction between science and society. We believe better science communication can improve our society and engage many different groups with science, also improving science.

Promotor: J.W. van Holten

Promotor: F.J. van Lunteren, E. Jorin

A difficulty of studies on chemical kinetics are the reaction time scales and detection of their intermediates.

Computers worden steeds krachtiger en krijgen steeds ingewikkelder taken. Het Leiden Institute of Advanced Computer Science (LIACS) doet baanbrekend wetenschappelijk onderzoek en past nieuwe vindingen toe in actuele maatschappelijke vraagstukken.

Mechanical metamaterials are man-made materials which derive their unusual properties from their structure rather than their composition.

The thesis addresses the long-term dynamical evolution of hierarchical multiple systems.

Ben jij nieuwsgierig naar hoe wetenschap en technologie bijdragen aan een duurzame en innovatieve toekomst? Bij de Universiteit Leiden onderzoek je de wereld van data, natuurwetten en levende systemen. Van wiskunde tot kunstmatige intelligentie, van klimaatvraagstukken tot hightech innovaties: je leert…