Promotor: Jan van der Greef; Co-promotors: Mei Wang; Eduard van Wijk

Promotor: A. Kros

Promotor: S.M. Verduyn Lunel, Co-promotor: O.W. van Gaans

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.

Promotores: Prof.dr. A.G.G.M. Tielens, Prof.dr. L. Kaper (UvA)

This thesis examines the link between simple molecules and the underlying structure and chemistry within protoplanetary disks - the birthplaces of planets.

Promotores: Prof.dr.G.R. de Snoo and Dr. R. Heijungs

With the help of quantum mechanics, digital quantum hardware may be able to tackle some of the problems that are too difficult for ordinary computers. But despite these expectations and the ongoing effort of the research community, reliable quantum computers are not yet realized in a lab setting.

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

Make use of this time to improve your language skills by signing up for custom-made online language classes.

Promotor: H.V.J. Linnartz

This thesis addresses the chemical processes that determine the compositions of giant planet atmospheres.

This dissertation studies the Asymptotics of Bayesian nonparametric inference for Gaussian linear models.

Algoritmen ontwerpen is een van de onderzoeksonderwerpen waar Leiden sterk in is. Want supercomputers moeten niet alleen gebouwd worden, maar ook geprogrammeerd. Wetenschappers van internationale faam doen hier onderzoek naar.

This thesis focusses on the temperature structure in protoplanetary disks. The relation between structures seen in the dust and gas-phase molecules is investigated.

Hydrodesulfurization (HDS) is an ubiquitous part of oil refining that ensures that fuels are cleaned of impurities and environment release of pollutants such as SOx and NOx gasses are minimized.

In condensed matter systems electron-electron interactions, negligible in everyday metals, can dramatically alter the electronic behavior of the system. Examples of such altered behavior include high-temperature superconductivity and modulation of the electron density.

Stars like the sun are born in large molecular clouds existing from gas and dust. During the formation process, the chemical composition of the material can be altered drastically by the changing physical conditions.

The name ‘Jambi flora’ refers to fossil plants found as part of a rock formation from the Early Permian (296 million years old), located in the Jambi Province of Sumatra, Indonesia.

Radiography is an important technique to inspect objects, with applications in airports and hospitals. X-ray imaging is also essential in industry, for instance in food safety checks for the presence of foreign objects.

Overall dispersion in LCA as result of inherent uncertainties, spread and unrepresentativeness.

What physics controls the properties of quantum matter, such as how electrons flow inside high-temperature superconductors? This question has captivated the physics community and industry for decades, in part due to the great technological potential such materials have, but also because they have resisted…

Visualizing the internal structure is a crucial step in acquiring knowledge about the origin, state, and composition of cultural heritage artifacts. Among the most powerful techniques for exposing the interior of cultural heritage objects is computed tomography (CT), a technique that computationally…

The application of nanomaterials in industrial processes and consumer products provides many societal benefits, but can also lead to the release of nanomaterials into the environment. The work in this dissertation aims to provide insights into the potential environmental impacts that may follow from…

Utilizing the polymeric platform of polypept(o)ides, this thesis describes synthesis and investigation of novel triblock copolymers to obtain carrier systems with multiple compartments for efficient siRNA delivery. Although the individual microstructure of nanoparticles differs depending on the polymeric…

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…

Na het afronden van de bacheloropleiding volgen verreweg de meeste studenten de masteropleiding. De Universiteit Leiden stimuleert studenten om na hun bacheloropleiding door te gaan met de masteropleiding.

In some condensed matter systems, such as the surface of a 3D topological insulator, the electrons are effectively massless and we must necessarily use the massless Dirac equation to describe them.

Kunst en vrije tijd, Kunst en vrije tijd

Hoe zien kinderen Zwarte Piet? Die vraag probeert het Centrum voor Gezinsstudies van de Universiteit Leiden te beantwoorden. Het Centrum zoekt nog kinderen die mee willen werken aan het onderzoek.

Wat is het effect op het milieu van het 2016-verbod op gratis plastic tasjes? Industrieel ecoloog Stefano Cucurachi heeft een subsidie ontvangen van €75.000 van het LUF-SVM Projectsubsidie Fonds* om deze vraag te beantwoorden.

Voor het eerst is het gelukt de driedimensionale beweging van individuele sterren in een sterrenstelsel buiten de Melkweg te meten. Een Gronings-Leidse onderzoek geeft een inkijkje in de verdeling van de donkere materie die het stelsel domineert. Ze publiceren hun bevindingen op 27 november in Nature…

Met een nieuw soort detector is de resolutie van de elektronenmicroscoop sterk verbeterd. De ‘lage-energie-elektronenmicroscoop’ (LEEM) kan hiermee worden ingezet voor onderzoek aan de dunst mogelijke materialen. De tests met de detector vormen het eerste resultaat van het project ESCHER.

De Tatiana Afanassjewa-lezingenreeks is een reeks publiekslezingen op woensdagavonden waarvoor iedereen met natuurkundige belangstelling van harte is uitgenodigd.

Promotores: Prof.dr. G.A. Persoon & Prof. dr. H.H. de Iongh

Promotor: Prof.dr. M. Schilthuizen

The bacterial cell wall is a nearly universal structure that offers protection and gives the cell its shape. However, environmental stressors, such as cell wall-targeting antibiotics and hyperosmotic conditions, can induce bacteria to shift to a wall-deficient state. It is unknown whether the lack of…

Can we provide the Dutch government with an integrative framework, wherein the various policies can be placed and the need for further measures can be identified?

Promotor: J.M. van den Broek Co-promotor: M.C. de Vries

This thesis presents the results of a study on the interfaces of insulating oxides with and without the insertion of a magnetic layer.

In surface science there is great effort to move from studying simple, flat model surfaces in vacuum to investigating more complex model catalysts in gas environments (in situ). This thesis gives three examples of such studies using microscopy and spectroscopy.

Zelf met leerlingen aan de slag in een zoektocht naar antibiotica? Met het practicum Antibiotica Gezocht! gaan bovenbouw havo- en vwo-leerlingen tijdens de biologieles op zoek naar (nieuwe) antibioticum-producerende bacteriën.

MCS bestaat uit vijf medewerkers, die allen sterke banden hebben met de ‘museums and collections’ opleiding bij de faculteit geesteswetenschappen en ‘heritage and museums’ bij de faculteit archeologie.

Atherosclerosis is the most important underlying process that drives cardiovascular disease, and is characterized by an accumulation of cholesterol which triggers an inflammatory response in the vessel wall.

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.

Promotors: Prof.dr. P.J. Punt, Prof.dr. C.A.M.J.J. van den Hondel

Kim Beerden wil de cursussen die aio’s krijgen voor ze college gaan geven, verrijken door middel van ‘blended learning’.

We hebben dierfaciliteiten voor verschillende proefdieren, die uiteraard allemaal aan de wettelijke eisen voldoen. We verzorgen de dieren zo goed mogelijk en onze verblijven voorzien de verschillende diersoorten zo goed mogelijk in hun specifieke behoeften.