In this thesis integral points on affine del Pezzo surfaces are studied.

This thesis contains results on the arithmetic and geometry of del Pezzo surfaces of degree 1.In Chapter 1 we give the necessary background, assuming the reader is familiar with algebraic geometry.

Promotores: P. Stevenhagen, L. van Geemen (Università degli studi di Milano), Co-Supervisor: Ronald M. van Luijk

This PhD thesis concerns the topic of arithmetic geometry. We address three different questions and each of the questions in some way is about counting how big some set is or can be.

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.

Promotor: S.J. Edixhoven

Promotor: Prof.dr. H.W. Lenstra

Promotores: P. Stevenhagen, L. van Geemen Co-promotor: R.M. van Luijk

Promotores: Bas Edixhoven, Jean-Benoit Bost, Co-promotor: Robin de Jong

Dissociative chemisorption is an important reaction step in many catalytic reactions.

Promotor: G. J. Kroes

Surface plasmons (SPs) are surface waves at the interface between a dielectric and a good metal, and are formed by the interaction between light and the free electrons at the metal-dielectric interface. They provide strong field confinement for optical fields, opening new possibilities for enhanced…

Promotor: Peter Stevenhagen

Several techniques are explored for going beyond the born-oppenheimer static surface model for molecule-surface reactions.

Curved single crystals provide variable, but well-defined surface structures.

Promotor: P. Stevenhagen, Co-promotor: R.M. van Luijk

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.

Juurlink

Aim: To develop and enable application of a practical, flexible, user-friendly platform to provide the scientific community with a tool to generate land surface products and its associated uncertainties and exploit these for data-intensive science.

Promotor: Prof.dr. G.J. Kroes

Advanced sensing techniques require graphene with high quality and well-controlled surface chemistry.

Promotor: M.T.M. Koper, Co-promotors: A.I. Yanson, L.B.F. Juurlink

Promotor: Prof.dr. H.V.J. Linnartz

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

Wiskunde en Natuurwetenschappen, Leids Instituut voor Chemisch Onderzoek (LIC)

Fundamental understanding of molecular reactions on metal surfaces is important for improving heterogeneous catalysis.

Like a mixture of oil and water, lipid membranes separate into two liquid phases.

Promotor: S.J. Edixhoven, A. Iovita

Catalysis is of extreme relevance in the production of everyday materials and plays a central role in many aspects of our life.

Promotie

This thesis has shed light on some of the ways in which the local electrolyte composition can differ from the bulk and how these changes in the local reaction environment can determine the activity and/or selectivity of two important electrocatalytic reactions, namely, electrochemical CO2 reduction…

Tin electrodeposition applications have rapidly evolved in the past 25 years.

Juurlink

Promotie

Promotor: S.J. Edixhoven, L.D.J. Taelman

Ooit iets voor de eerste keer gedaan en er direct een prijs mee gewonnen? Sabine Wenzel wel. Met haar onderzoek naar het oppervlak van zinkoxide won ze de Surface Science Young Investigator award.

Promotie

Promotie

Promotores: P. Stevenhagen, E. Fouvry (Univeriste Paris Saclay)

Promotor: G.R. de Snoo, Co-promotores: M.G. Vijver, J.P.M. Vink

The focus throughout this thesis will be on gathering fundamental studies of the detailed structure and composition of the electrode/electrolyte interface effect on the rate and mechanism of key electrocatalytic reactions.

Metals surfaces form a group of effective catalysts for the reaction of small molecules such as hydrogen (H2).

Promotor: J.W.M. Frenken Co-Promotor: R. Felici

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

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: H.V.J. Linnartz

A remarkable population of short period transiting rocky exoplanets with equilibrium temperatures on the order of 2,000 K has recently been discovered.