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.

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.

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

In this thesis we use Josephson and noise scanning tunneling microscopy for the study of conventional, unconventional (iron-based) and disordered superconductors. On the one hand, Josephson scanning tunneling microscopy allows us to directly visualize the superfluid density with high spatial resolut…

This thesis discusses the discovery potential of Intensity Frontier experiments.

My PhD research is devoted to studies of the conjectural cluster-algebraic symmetry in the theory of topological string, which is the simplest, however already non-trivial sector in the theory of string.

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

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

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.

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

Onderzoeksgroepen in het Biological & Soft Matter onderzoeksprogramma ontrafelen de mechanismen in biologische processen en ontwikkelen nieuwe zachte materialen die geïnspireerd zijn door de natuur.

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.

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.

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

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…

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…

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

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

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

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.

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

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.

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.

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

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

Promotor: Prof.dr. E.J.J. Groenen, Co-Promotor: M. Huber

This thesis explores interfacial conductance and electric field-effects in LaAlO3/SrTiO3 heterostructures.

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.

Werken bij een topfaculteit? Ontdek de vacatures bij Wiskunde en Natuurwetenschappen en solliciteer meteen.

In this thesis, we have used numerical approaches to study the effects of translational symmetry breaking on strange metallic systems as realised by the holographic duality⁠.

Promotor: M.A.G.J. Orrit

Op 23 en 24 november vond op het Europees Universitair Instituut in Florence een bijeenkomst plaats ter gelegenheid van het 25 jarig bestaan van de Ruimte van Vrijheid, Veiligheid en Recht. Dit is het beleidsterrein waarbinnen de Europese Unie zich bezighoudt met Justitie en Binnenlandse Zaken.

De faculteit biedt een internationale academische omgeving met 36% van de studenten, promovendi en onderzoekers uit het buitenland.

Werken bij een topfaculteit? Ontdek de vacatures bij Wiskunde en Natuurwetenschappen en solliciteer meteen.

Op 4 mei 2024, van 10.00-16.00 uur, vond aan de Gewandeweg 100 een feestelijke dag plaats, omdat werd gevierd dat medewerkers en studenten van de Leidse Faculteit der Archeologie al 50 jaar veldwerk doen in en rondom Oss in goede samenwerking met de gemeente Oss, de plaatselijke erfgoed- en archeologische…

Woensdag 6 april nam Willemien den Ouden afscheid als Dean van de Honours Academy met een debat over referenda in de Europese Unie. Niesco Dubbelboer (initiatiefnemer Wet Raadgevend Referendum), Chris Aalberts (politiek journalist) en Wim Voermans (hoogleraar Staats- en Bestuursrecht) gingen met elkaar…

Tijdens de HundrED Innovatie Conferentie op woensdag 4 oktober 2017 werd het educatieve programma Universe Awareness (UNAWE) uitgeroepen tot één van HundrED’s ‘Honderd inspirerende innovaties in onderwijs in de wereld’.

Na jaren van ontwikkeling is het moment eindelijk daar: een enorme cryostaat, een bijzonder geavanceerde vriezer die de gevoelige onderdelen extreem koud houdt, is vanuit Zürich in Leiden aangekomen. Het apparaat is het grootste onderdeel van METIS, een van de eerste instrumenten op ESO’s Extremely…

Elf onderzoekers van de faculteit Wiskunde en Natuurwetenschappen staan op de 2021 Highly Cited Researchers-lijst van Clarivate Analytics. Slechts 0,1 procent van de wereldwijde onderzoekers komt in deze lijst voor, waarmee ze dus letterlijk één uit duizend zijn.

Erik Zürcher (1928 – 2008) geldt nog altijd als gezaghebbende bron in het onderzoek naar Chinees boeddhisme. Een nieuwe bundel met zijn publicaties is aanleiding voor een internationaal boeddhisme-congres in Leiden. Prinses Beatrix, die hem goed kende, is aanwezig bij de opening.

This thesis presents the results of a study on the interfaces of insulating oxides with and without the insertion of a magnetic layer.

Atoms and molecules are the basic units of matter. If we keep dividing a bar of gold or a glass of water into smaller parts, at the end we are left with a single gold atom or a water molecule.

This dissertation revolves around the design and implementation of novel instrumentation and related measurement techniques, at the single molecule level, for use in biophysical research. Chapter 1 presents an introduction to the field of fluorescence-based single molecule measurements. In particular,…

Early time-resolved experiments by Frauenfelder on the ensemble of the kinetic rebinding of CO to myoglobin molecules resulted in a stretched exponential relaxa-tion due to a very large spread of the reaction rates of individual molecules.

Promotor: C. W. J. Beenakker, Yu. V. Nazarov, Co-promotor: J. Tworzydlo

This thesis is a collection of experimental attempts to enhance photoluminescence of fluorescent molecules and quantum dots with single gold nanorods (GNRs) and relevant applications.

In this thesis,