The overall theme of this thesis is to complement the electrochemical data acquired in fuel cell research with in situ X-ray photoelectron spectroscopy (XPS) and soft X-ray absorption spectroscopy (XAS).

This thesis is devoted to an in-depth examination of the various effects of disorder in the cuprate high-temperature superconductors.

Promotor: E. Bouwman, Co-Promotor: S. Bonnet

De Raad van State heeft een programma van reflectie opgesteld, waarmee de hoogste bestuursrechter zijn aandeel in de kindertoeslagaffaire wil evalueren om lessen uit de affaire te kunnen trekken.

Op 14 november organiseerde het Team Strategie & Verbinding van het DG Migratie van het Ministerie van Justitie en Veiligheid de jaarlijks de State of the Art conferentie. De conferentie brengt wetenschappers, beleidsmakers en andere professionals in het migratiedomein bijeen rond belangrijke migratievraagstukken.…

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 thesis contributes to studying primordial cosmology theories and their detectability in future observations.

The first direct detection of gravitational waves opened the possibility of mapping the Universe via this new and independent messenger.

Per 20 augustus gaat universitair hoofddocent Michiel Tjepkema aan de slag bij de directie Bestuursrechtspraak van de Raad van State. Hij wordt het eerste hoofd van de kennisunit.

This thesis is dedicated to the exploration of the primordial dark ages: unknown physics during the earliest stages of the Universe’s expansion that have not yet been directly probed by observations. Cosmic inflation is a burst of exponential expansion of space after the “Big Bang”.

De asielplannen van minster Faber leveren de nodige commotie op binnen politiek Den Haag. Wilders wil geen enkele concessies doen en dreigt met verkiezingen. De Raad van State oordeelt nl. negatief op de wetsvoorstellen. Wim Voermans, zegt in Nieuwsuur dat ‘de plannen juridisch net binnen de lijntjes…

Op 12 november verdedigde Clare Fenwick het proefschrift 'The political economy of immigration and welfare state reform: a collection of comparative political and economic essays on human mobility and social protection'. Het promotieonderzoek is begeleid door Olaf van Vliet en Kees Goudswaard.

Op 19 december 2019 verdedigde Reza Eftekhar zijn proefschrift 'The Role of the Domestic Law of the Host State in Determining the ratione materiae Jurisdiction of Investment Treaty Tribunals: The Partial Revival of the Localisation Theory'. Het promotieonderzoek is begeleid door promotor prof.dr. E.…

Op 3 september 2019 verdedigde Ilektra Antonaki haar proefschrift 'Privatisations and golden shares: Bridging the gap between the State and the market in the area of free movement of capital in the EU'. Het promotieonderzoek is begeleid door promotor prof.dr. S.C.G. Van den Bogaert.

Vice-rector Organisatieontwikkeling en oud-decaan FGGA Erwin Muller start op 1 april 2026 als staatsraad bij de Afdeling Advisering van de Raad van State.

‘Anyone who has not been shocked by quantum mechanics has not understood it.’ Verwonder jij je ook niet dagelijks over kwantummechanica en de state of being van atomen? Volgens natuurkundige Niels Bohr, een van de grondleggers van de kwantummechanica, begrijp je dan gewoon nog niet genoeg van dit bijzondere…

Promotor: Jelle S. Kaastra Co-promotor: Jelle de Plaa

Nowadays, it is well known that hydrogen and helium (and small traces of lithium and beryllium) were created shortly after the Big Bang, while the heavier elements are created in the cores of stars at different evolutionary stages. When these stars explode as supernovae, they expel metals synthesised…

The main objective of this thesis was to develop clinically relevant survival models for patients with high-grade soft tissue sarcoma of the extremities, in particular the development and validation of prediction models for use in clinical practice.

In-use stocks of products can be considered as intermediaries between human needs and the physical world.

Metal-organic compounds hold great promise as photoactivated chemotherapy (PACT) agents, leveraging their unique geometric and electronic properties to achieve precise spatiotemporal control over drug activation.

Rogier Kegge, universitair docent bestuursrecht en omgevingsrecht, vertelt in Nieuwsuur over de verstrekkende gevolgen van de uitspraak van de Afdeling Bestuursrechtspraak van de Raad van State van 29 mei 2019 (ECLI:NL:RVS:2019:1603) over het Programma Aanpak Stikstof.

Quantum computing represents a fundamentally new computational paradigm, capable of addressing problems that are intractable for classical computers.

With the energy transition toward a renewable energy supply and a CO2-neutral economy, electrification of the energy system is rising in importance, which leads to the challenge of long-term storage of renewable electricity.

Majorana fermions in superconductors are the subgap quasiparticle excitations that are their own antiparticles.

Vrijdag 28 oktober 2016 vond op de Raad van State het symposium ‘De gevolgen van privatisering en liberalisering voor de rechtsbescherming door de bestuursrechter’ plaats. De Afdeling Staats- en bestuursrecht van de Universiteit Leiden en de Raad van State organiseerden gezamenlijk dit symposium, ter…

De discussie over de sluiting van illegale schietbanen van Defensie, als gevolg van de stikstofwetgeving is ingewikkeld en omvat diverse juridische aspecten. Armin Cuyvers, hoogleraar Europeesrecht, bespreekt de zaak in BNR-Nieuwsradio.

Van 26 t/m 30 juni 2017 organiseert de afdeling Staats- en Bestuursrecht van de Universiteit Leiden een zomercursus over de Europeanisering van het nationaal bestuursrecht in de lidstaten van de Europese Unie.

As a virtually inexhaustible source, solar energy plays a major role in future global energy scenarios.

Promotor: Prof.dr. E. Bouwman, Co-promotor: S. Bonnet

Humanity stands at a pivotal juncture, facing the dual challenge of environmental sustainability and rapid population growth, projected to exceed 11 billion by century’s end.

The research presented in this thesis makes use of small molecules (as H2 , D2 and O2 ) on well-defined single crystal surfaces (flat Pt(111), flat Cu(211) and curved Pt(111)) to elucidate the role of surface structure and degrees of freedom in the reactant in specific surface reactions.

On a structural level, the properties featured by a majority of mechanical metamaterials can be ascribed to the finite number of soft internal degrees-of freedom allowing for low-energy deformations.

Before the large scale use of renewable energy sources can be implemented in our society, the storage of electrical energy needs to be tackled. Storage the energy as hydrogen via the reduction of protons is a good option.

Promotor: M.T.M. Koper, Co-promotor: L. Juurlink

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

In the current global context, there is a pressing need to address sustainable energy supplies to safeguard our Planet and its ecosystems. The choices made by human society have a significant impact on genetic evolution and climate.

Human civilization consumes a huge amount of fossil fuels, which has resulted in an atmospheric CO2 level which has not been higher in over 800 millennia.

Reducing greenhouse gas emissions is one of the most pressing challenges that humanity faces in the coming decades.

In this thesis, we study different curved single crystals because of the diversity of surface structures across their curvature.

The transition to electric vehicles (EVs) reduces vehicle emissions to combat climate change. EVs raise concerns regarding the production of lithium-ion batteries and related emissions; while batteries can also provide energy storage services for the electricity system.

This thesis studied in depth the energy use and CO2 emissions of the industrial sector in China.

This thesis addresses the problem of designing performance and energy efficient embedded streaming systems, that is, systems which process a stream of input data coming from the environment and generate a stream of output data going into the environment.

With increasing carbon dioxide levels in the atmosphere and their detrimental effect on the global climate, modern society needs to push for more renewable energy sources. Storing widely accessible and abundant solar energy in chemical bonds in the form of molecular fuel via artificial photosynthesis…

This thesis is a (biased) journey through very different topics in astrophysics: quasars and new populations of active galactic nuclei, gravitational waves from merging black holes, and protoplanetary discs around young stars.

Wetlands provide many ecosystem goods and services which include fish production. The sustainability of small-scale fisheries (SSF) has received considerable attention in recent years because fish is one of the major sources of animal protein to a considerable fraction of the global population which…

Heterogeneous catalyzed processes are highly significant to the chemical industry. Dissociative chemisorption (DC) of molecules on surfaces is always considered as a step with a high degree of rate control for heterogeneous catalysis.