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

The thesis mainly contributes to the characterization of Majorana fermions as they appear in the Condensed Matter context.

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

Promotor: Prof.dr. C.W.J. Beenakker

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…

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

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

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

Promotor: Prof.dr. C.W.J. Beenakker

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.

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.

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.

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.

Juurlink

Promotor: Prof.dr. G.J. Kroes

In this project of the Center for Public Values & Ethics (CPVE) ongoing research is conducted on the history of advice to Dutch central government by so-called State committees from 1814 to 2014. State committees have been installed by Dutch central government since 1814 to provide expert advice, research…

Promotor: Prof.dr. C.W.J. Beenakker

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: W.Th.F. den Hollander Co-Promotor: F.M. Spieksma

Onder de gezamenlijke titel ‘Scarcity and the State’ verschenen onlangs twee Engelstalige boeken over de verdeling van schaarse publieke rechten (Intersentia 2016). Paul Adriaanse (UL), Frank van Ommeren (VU), Willemien den Ouden (UL) en Johan Wolswinkel (Tilburg University) voerden de redactie. Aan…

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

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…

Op 16 juni 2020 verdedigde Andrea Varga haar proefschrift 'Establishing State Responsibility in the Absence of Effective Government'. Het promotieonderzoek is begeleid door promotoren prof. dr. N.J. Schrijver en prof. dr. F. Baetens (University of Oslo).

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

Sinds de United Nations Group of Governmental Experts on the Developments in the Field of Information and Telecommunications in the Context of International Security (UN GGE) elf aanbevelingen heeft gedaan over verantwoordelijk staatsgedrag omtrent cyberspace is er een discussie gaande over internationale…

Juurlink

Op 27 juni 2019 verdedigde Vid Prislan zijn proefschrift 'Domestic Courts in Investor-State Arbitration: Partners, Suspects, Competitors'. Het promotieonderzoek is begeleid door promotor prof. dr. N.J. Schrijver.

Het onderzoek in dit proefschrift kijkt naar de rol van het locus ceuruleus - noradrenalinesysteem in verscheidene aspecten van menselijke cognitie, en de modulatie van de staat van het brein.

Lezing, Research Seminar

Op 10 juni 2021 verdedigde Merinda Stewart haar proefschrift 'Freedom of Overflight: A Study of Coastal State Jurisdiction in International Airspace'. Het promotieonderzoek is begeleid door promotoren prof.dr. P.M.J. Mendes de Leon en prof.dr. J.J. Rijpma.

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.

Op 7 mei 2020 verdedigde Jolanda van der Vliet proefschrift 'The International Legal Protection of Environmental Refugees. A human rights-based, security and State responsibility approach'. Het promotieonderzoek is begeleid door promotoren prof.dr. N.J. Schrijver en prof.dr.ir. J.J.C. Voorhoeve.

Theoretisch fysicus Carlo Beenakker krijgt zijn tweede Advanced Grant van de European Research Council (ERC). Met deze beurs van 2 miljoen euro gaat hij proberen de ideale bouwsteen voor een quantumcomputer te realiseren, namelijk 'vervlochten' Majorana-deeltjes. Een gewaagd project, met uitzicht op…

Promotor: H.V.J. Linnartz

Op 23 oktober 2019 verdedigde Yoram Stein zijn proefschrift 'Spinoza's Theory of Religion: The Importance of Religion in Spinoza's Thought and Its Implications for State and Society'. Het promotieonderzoek is begeleid door promotor prof.dr. P.B. Cliteur en prof.dr. A.A.M. Kinneging.

Het The Hague Program for Cyber Norms, een onderzoeksprogramma van het Institute of Security and Global Affairs, heeft zijn eerste beleidsnota gepubliceerd. Hierin onderzoeken Dennis Broeders, Sergei Boeke en Ilina Georgieva de rol van inlichtingendiensten in cyberspace en de (on)mogelijkheden van adequate…

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.