In this thesis we push the boundaries of high-resolution imaging at radio frequencies between 100 and 200 MHz. Using the International LOFAR Telescope that spans across Europe we achieve sub-arcsecond angular resolution.

The major and ultimate aim of metabolomics is to obtain an answer to a specific biological or clinical question.

This thesis is about the study of hydrocarbons via infrared spectroscopy.

One of the key discoveries in exoplanet research over the past decade is the abundance of small planets in our Milky Way. Despite their high numbers, our understanding of their atmospheres remains limited, and it is unknown if they possess atmospheres at all.

Promotor: P.J.J. Hooykaas, Co-Promotor: E.J. van der Zaal

Solar energy is used by photosynthetic organisms to drive energy required cellular processes. Is absorbed by two groups of pigments, located in the LHCs.

To address the fundamental questions of how life on Earth emerged and how common life may be in the Universe, it is crucial to know the chemical composition of the planet-forming material.

Solar energy harnessed by plants and algae has great potential to be converted into biofuels for future generations.

Inspired by natural photosynthesis, perovskite-based photoelectrochemical (PEC) systems are being developed for artificial photosynthesis, aiming to enhance solar-to-hydrogen conversion for green energy.

High-angular-resolution observations of the circumstellar material have uncovered numerous and very diverse substructures in protoplanetary discs, raising the question of whether they are caused by forming planets or other mechanisms.

Until the 1990s, the only known planets were those in our Solar System. Three decades later, several thousand exoplanets have been discovered orbiting stars other than the Sun, and substantial efforts have been made to explore these strange new worlds through spectroscopic analyses of their atmosphe…

Promotor: Prof.dr. S.F. Portegies Zwart

The work done during this PhD research, aims to investigate the effect of tidal heatingin the observability of extra-solar satellites around exoplanets.

This thesis describes the development and validation of new high-contrast imaging techniques, with the ultimate goal of enabling the next generation of instruments for ELT-class telescopes to directly image Earth-like extra-solar planets orbiting around nearby stars.

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.

Sustainable energy from wind and solar is most readily available near the sea.

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.

When observing star-forming galaxies, we are not only seeing stellar light, but we also see how this interacts with galactic gas and dust. This thesis contains studies of the stellar, nebular and dust properties of low mass star-forming galaxies.

Promotor: E. F. van Dishoeck, Co-promotor: C. Walsh

This thesis consists of three chapters, the first two of which concern division points of elements of the multiplicative group of a number field.

This thesis consists of three chapters. Each chapter is on a different subject. However, all three chapters address issues that arise in counting arithmetically interesting objects.

De Faculteit der Archeologie van de Universiteit Leiden, Archol en Gemeente Oss werken al tientallen jaren samen. In 2021 is er een project opgestart om veldonderzoek uit te voeren in Oss. Dit project heet Field School, waarbij een groep studenten, docenten van de Universiteit Leiden en medewerkers…

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

Promotor: Prof.dr. P. Stevenhagen

The elementary excitations of magnets are called spin waves, and their corresponding quasi-particles are known as magnons. The rapidly growing field of Magnonics aims at using them as information carriers in a new generation of electronic devices, (almost) free of electric currents.

Natural history collections provide invaluable sources for researchers with different disciplinary backgrounds, aspiring to study the geographical distribution of flora and fauna across the globe as well as other evolutionary processes.

A plasma is an ionized gas with very low electrical resistivity. As such, magnetic field lines are 'frozen in' and move with the fluid. Magnetic field lines that are linked, knotted and tangled, cannot be undone by the fluid motions.

This thesis combines field and laboratory studies to address some of the most pressing questions in the field of microplastic research.

Promotor: K.H. Kuijken

Soil biodiversity is of great importance for the maintenance of multifunctionality in terrestrial ecosystems.

Data Science (DS) and Artificial Intelligence (AI) are omni-present and have the potential to be incorporated in various fields. However, in order to live up to this expectation, a good understanding of the techniques, their implications and limitations is required. In this minor you develop insights…

Promotores: B. Erez, P. Stevenhagen, Co-Promotor: B. de Smit

Op deze pagina vindt u de opnames van de online This Week's Discoveries vanaf 12 mei 2020 en een lijst sprekers vanaf oktober 2015.

Diverse types of exoplanets such as gas giants on close-in orbits (hot Jupiters) and young massive giants on wide orbits (super Jupiters), with no analogs in the Solar System, pose challenges but also opportunities to our understanding of planet formation and evolution.

Promotor: T.J. Aartsma, Co-promotor: R.N. Frese

Promotor: M.A.G.J. Orrit

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

The zoo of detected exoplanets reveals both the uniqueness of our own Solar System and the complexity of planetary system formation, sparking fundamental questions about how planetary systems form and evolve.

Workshop

Yearly, the LIBC organizes a public event to share scientific research in the field of brain & cognition These public days are organized in collaboration with the municipality of leiden in the City Auditorium.

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

De Gemeente Oss is een begrip in de wereld van de Nederlandse archeologie. Al vijftig jaar leggen Leidse archeologen, in samenwerking met inwoners van Oss, de geschiedenis van de gemeente bloot. In 2024 vieren we deze 50 jaar aan samenwerking. Houd deze website in de gaten voor onze activiteiten!

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…

Promotor: C. W. J. Beenakker, Yu. V. Nazarov, Co-promotor: J. Tworzydlo

Promotor: J. N. Kok, Co-promotor: A. J. Knobbe

Promotor: J. Schaye

The field of science communication is very broad. Below is a list of organisations where SCS students can fulfill internships or where alumni have found jobs.

Striga hermonthica, commonly known as witchweed, infests major cereal crops in Sub-Saharan Africa causing severe yield losses and threatening the livelihood of millions of resource poor farmers.