In this dissertation iron-based homogeneous catalysts were synthesized, characterized and investigated for water oxidation activity.

Electrocatalysis allows for storing electricity or converting it into chemical bonds, producing chemical building blocks and fuels using renewable resources.

Anthropogenic noise has been shown to affect marine animals in various ways, this may have fitness consequences at individual and population level. This thesis aims to increase insight into the quantification of sound-induced behavioural responses that are relevant to fitness, and into factors that…

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.

The electrochemical oxygen reduction reaction (ORR) is an essential half-reaction for the utilization of hydrogen as a sustainable fuel, via the conversion of hydrogen to electrons and protons facilitated by the ORR. In the most common fuel cells, the ORR is requires high loadings of non-abundant platinum…

Electron microscopy has become an extremely important techniquein a wide variety of elds.

This thesis focuses on the X-ray spectral analysis of merging galaxy clusters and the plasma code development for future high-resolution X-ray spectroscopy observations.

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

I have studied the hot, diffuse gas around and between galaxies. Specifically, I have used the EAGLE numerical simulations of galaxy formation to predict the properties of this gas, and I have used those properties to predict specific observables: soft X-ray absorption and emission lines.

In this thesis we study the landscape of gravitational models which modify GR by introducing an additional scalar degree of freedom (d.o.f.) to source Cosmic Acceleration.

Food waste is a defining inefficiency of the modern food system, with profound implications for resource use, climate change, and circular economy transitions. This dissertation examines food waste through two complementary lenses: the prevention of avoidable food waste and the valorization of unavoidable…

Producing green energy has become the main goal in our society in the search of reducing or eliminating the carbon emission from fossil fuels.

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

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.

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

In multi/many-core System-on-Chips (SoCs), the performance is almost linearly scaling with the number of processing elements.

The redox-conversion reaction of metal-disulfide and metal-thiolate complexes are important, as they may shed light on electron-transfer reactions that often occur in Nature.

In this thesis, we develop a novel technique called Optical Near-field Electron Microscopy (ONEM), which aims to combine the advantages of both optical and electron microscopy: the high resolution of electron microscopy and the low sample damage of optical microscopy.

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

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…

This thesis addresses the challenge of sustainable urban development by analyzing the interplay between green and grey infrastructure to optimize resource use and ecosystem services.

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.

Mr. Alban Mik is vanaf 15 augustus 2018 aangesteld als nieuwe onderwijs- en onderzoeksmedewerker bij de afdeling Staats- en bestuursrecht van de Faculteit der Rechtsgeleerdheid van de Universiteit Leiden.

WORLDING AMERICA onderzoekt hoe 'spel' een sleutelrol is geweest in het vroegere en huidige proces van het creëren van Amerika als een coherente en hegemonische 'wereld', van 1503 tot heden.

Een groep ondernemers bereidt een schadeclaim voor tegen de staat wegens de onlangs gepresenteerde kabinetsmaateregelen ter beperking van PFAS. Er zijn twee wegen die een ondernemer kan bewandelen, zegt Jonathan Huijts, onderzoeker aan de afdeling Staats- en Bestuursrecht van de Universiteit Leiden.

Janet van de Bunt heeft afgelopen zaterdag 4 maart een opinie geschreven voor Volkskrant online.

Linde Desmaele onderzoekt de dilemma's die voortvloeien uit het Amerikaanse beleid rond lastenverdeling, met focus op de Europese bondgenoten.

‘Big Tech heeft de democratische staat op feodale wijze aan zich onderworpen’, schrijft universitair docent Reijer Passchier in zijn nieuw verschenen boek De vloek van Big Tech. In NRC waarschuwt de docent voor de groeiende macht van techgiganten.

Met ingang van 1 september 2018 wordt Annemarie Drahmann universitair (hoofd)docent (tenure track) bij de Afdeling staats- en bestuursrecht van de Universiteit Leiden. Annemarie is gespecialiseerd in het algemeen bestuursrecht. Zowel in onderzoek als in onderwijs ligt haar expertise bij het Europees…

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.

Promotor: Prof.dr. G.J. Kroes

Dit proefschrift gaat over theoretische oppervlakte chemie binnen het veld van de heterogene katalyse.

Hydrogen peroxide (H2O2) is an important bulk chemical that is used in various industrial processes. More than 95% of the H2O2 used in industry is made via the anthraquinone process during which a large amount of energy is going to waste.

Promotor: Prof.dr. T. Schmidt, Co-Promotor: S.J.T. van Noort

Leiden University College The Hague (LUC) biedt een 3-jarige bacheloropleiding aan waarin je je focust op Global Challenges; grote uitdagingen waar de mensheid mee te maken heeft: Vrede & Rechtvaardigheid, Diversiteit, Duurzaamheid en Welvaart. Je hebt ruimte om de opleiding zo in te richten als je…

Electrons in a crystal lattice have properties that may differ from those of a free electron in vacuum.

Microbial rhodopsins are photosensitive pigments implemented in the growth and adaptation of a large population of microorganisms.

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.

Hoe kunnen we een balans vinden tussen de soms tegenstrijdige belangen van individuele, publieke en private data-producenten en –verwerkers?

Promotor: Prof.dr. H.J.M de Groot, Co-Promotor: A. Alia

Leiden University College The Hague (LUC) biedt een 3-jarige bacheloropleiding aan waarin je je focust op Global Challenges; grote uitdagingen waar de mensheid mee te maken heeft: Vrede & Rechtvaardigheid, Diversiteit, Duurzaamheid en Welvaart. Je hebt ruimte om de opleiding zo in te richten als je…

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

Promotores: Prof.dr. H.J.M. de Groot, Prof.dr. J. Matysik (Universitaet Leipzig)