This project investigates the well-preserved agricultural terraces of the Inn valley and the evolution of resource use in the inner Alps.

For a first time the atlas maps the soil biodiversity of the entire planet, and provide s comprehensive analysis of human-induced threats to soil organisms and soil functioning, facilitating development of new policies to protect soil and soil organisms.

This study aims to provide a long time perspective of human landscape manipulation. Studying the roles of prehistoric foragers in past ecosystems is of great importance to establish the character of past 'natural' landscapes and to enhance the management of current ones.

Chromatin is an ubiquitous protein-DNA complex that forms the structural basis of DNA condensation in all eukaryotic organisms.

This thesis covers several aspects of quantum algorithms for near-term quantum computers and its applications to quantum chemistry and material science.

Promotor: Prof.dr. E. R. Eliel, Co-Promotor: M.J.A. de Dood

In this Ph.D. thesis we study the interaction of low energy electrons with thin materials, namely layered materials (graphene, hexagonal boron nitride, molybdenum disulfide) and organic films. At these low energies the quantum mechanical wavelength of the electron wave function is in the order of a…

Gold nanoparticles show surprisingly strong interactions with light in the visible range, which can be divided into scattering, absorption, and photoluminescence.

This thesis focuses on amyloid proteins, a class of proteins that convert into amyloid fibrils.

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

Promotor: Prof.dr. E.J.J. Groenen

Errors are everywhere, and mechanical failures are especially common: buckled grain silos and cracked support columns are, justly, seen as an issue to be avoided.

This thesis is about cosmological inflation and its relation to observations.

Quantum computing is an emerging technology, which holds the potential to simulate complex quantum systems beyond the reach of classical numerical methods.Despite recent formidable advancements in quantum hardware, constructing a quantum computer capable of performing useful calculations remains challenging.In…

In this Thesis, novel charge induction mechanisms of ionic liquids are treated, tested and experimented on complex oxides, in particular cuprates.

In this thesis we study quantum transport phenomena on the nanometer scale, in two classes of materials: topological insulators with induced superconductivity and graphene superlattices.

Because thin systems can deform along the thickness with relative ease, the interplay between surface mechanics and geometry plays a fundamental role in sculpting their three-dimensional shape.

Mechanical metamaterials are carefully engineered materials whose properties are controlled by their structure, not by their composition, which allows using metamaterials to study and control physical effects in detail⁠.

In this thesis we investigated the ability of two-photon multifocal microscopy for single-molecule microscopy in live cells and organisms.

It has been a long-standing mystery how complex biological structures emerge from such seemingly uncoordinated building blocks as cells and tissues, in the presence of only minimal environmental guidance.

In the traditional theory of linear elasticity, superposition dictates that the response of a material does not depend on the sequence of the applied mechanical actuations.

This dissertation aims to advance understanding of amoeboid single cell migration under the influence of changing physicochemical environmental properties. The particular focus is on the relatively unknown influence of differing physical properties in the extracellular environment, such as the migratory…

The main focus of this thesis is the behaviour of two-dimensional materials, namely (anti)-ferromagnetic materials in the first two chapters, which show topological phases, and energetic square ice in the third and fourth chapter.

We use DNA strands to stabilize few-atom silver clusters, which show unique optical and chemical properties. This thesis involves the study of these constructs for various applications.

Working for a top faculty? Discover the vacancies at the Faculty of Science and apply immediately.

Promotor: M.A.G.J. Orrit

Promotor: A. Achúcarro, Co-Promotor: G.A. Palma

In this work the reconstruction of a tau neutrino signal in the KM3NeT detector is discussed.

Detecting nanoscopic objects plays an important role in nanoscience in particular, in the rapidly growing field of nanobiology. The forebear to modern super-resolution microscopy for single molecule investigation, is fluorescence microscopy.

Self-assembly offers a promising route to create complex structures and materials using simple building blocks. Through, colloidal self-assembly, we can understand the governing principles of the self-assembly process and unlock its potential in diverse applications in materials science, photonics and…

Thermodynamics is one of the founding scientific pillars that has helped us better understand heat engines, biology, ecosystems, and even black holes. While it fundamentally describes large systems by examining the bulk behavior of their constituents, it is anchored in the statistical equivalence of…

This thesis covers various applications of topology in condensed matter physics and quantum information.

Triplet superconductivity refers to a condensate of equal-spin Cooper pairs (pairs of electrons with equal spin).

The research groups within the biological, soft and complex systems research area study the physics of a broad range of biological and soft materials. This spans both experimental and theoretical research.

Promotors: Prof.dr. J. Zaanen, Prof.dr.ir. H. Hilgenkamp

In this dissertation, we work towards an experiment in which we aim to bring a micrometer sized magnet at the tip of a soft cantilever into a superposition.

A plasma is an ionized gas with very low electrical resistivity. As such, magnetic field lines are 'frozen in' and move with the fluid. Magnetic field lines that are linked, knotted and tangled, cannot be undone by the fluid motions.

We investigate how radiation pressure can be used to influence the mechanical motion of a micro-mirror suspended from springs.

PhD defence

On 23 February 2011, Hans de Iongh gave a Skype lecture for a group of 15 students of the Duke University of North Carolina, USA on the invitation of Dr Andrew Jacobson.

Chinese materia medica (CMM), comprising a diverse array of natural substances from plants, animals, and minerals, has been integral to Traditional Chinese Medicine (TCM) throughout history. This study investigates the dynamic evolution of CMM, noting shifts in species for improved therapeutic effects…

The 2011 disasters precipitated widespread concern among heritage scholars about the fate of Tohoku’s cultural properties, tangible and intangible. Damage to not only buildings and landscapes but also ‘formless’ heritage, some worried, could weaken social infrastructure and thus slow or undermine re…

This thesis provides an overview of the development of the Pair Configuration to Molecular Activity Coefficient (PAC-MAC) model.

Right-wing ideology is a dominant force in Israel today. Between 2009 and 2021, and again since 2023, Likud-led governments headed by Benjamin Netanyahu consolidated their vision for the country’s identity and its place in the Middle East. Radicalized Conservatism in Israel presents this vision’s ideological…

In the contemporary myriad of definitions and approaches of landscape, the starting points and limits of the concept of landscape biography are being explored, but also tested in this thesis. What exactly is a landscape biography? What does it constitute of? Is landscape biography just a narration of…

Proparte is the Association of professors at Leiden University, their spouses and partners.

This paper written by Alexandre Afonso, Assistant Professor and Researcher at Leiden University, argues that gender norms and the political strength of the left were important structuring factors regarding why European countries choose migrant labour to expand their labour force in the decades that…

V.S. Srinivasa Sastri was a celebrated Indian politician and diplomat in the early twentieth century. Despite being hailed as the ‘very voice of international conscience’, he is now a largely forgotten figure.

A research agenda

The Patriot behind the pot tells the story of pottery, people and politics in the Netherlands during a time of great revolutions -revolutions both in a political and industrial sense.