In this thesis we study bistable reaction-diffusion equations on lattice domains.

This thesis describes how complex and real-world relevant analytical solutions can be found starting from a simple Nagumo problem posed on one or two-dimensional lattices.

What happens to electrical waves that have to cross gaps in insulation material around nerves in the human body

In this thesis, we study travelling waves in stochastic reaction-diffusion equations. We extend techniques from the deterministic theory for travelling waves to apply to the stochastic version, which allows us to compute the stochastic wave speed and shape, and draw conclusions on the stability of the…

Zuid-Korea is hot and happening! Het land verovert de wereld met haar populaire cultuur: muziek, dans, mode, dramaseries, film en eten. Maar wat is de Korean Wave eigenlijk?

We consider the propagation of electrical signals through nerve fibres.

Promotie

The Copenhagen interpretation of quantum mechanics states that a measurement collapses a wavefunction onto an eigenstate of the corresponding measurement operator.

Op donderdag 16 november 2017 heeft Lalin Kovudhikulrungsri haar proefschrift ‘The Right to Travel by Air of Persons with Disabilities’ verdedigd. Haar promotoren zijn Prof.dr. P.M.J. Mendes De Leon en Prof.mr.dr. A.C. Hendriks.

Promotor: Prof.dr. H. J. A. Röttgering, Co-Promotor: M. Haverkorn

The elementary excitations of magnets are called spin waves, and their corresponding quasi-particles are known as magnons. The rapidly growing field of Magnonics aims at using them as information carriers in a new generation of electronic devices, (almost) free of electric currents.

Promotor: S.M. Verduyn Lunel

Promotor: Prof.dr. H.J.A. Rottgering

Elektrische signalen bewegen als een golf door onze zenuwbanen. De wiskundige modellen voor deze bewegingen konden nog niet alle biologische eigenschappen van de zenuwbanen goed beschrijven. Promovendus Willem Schouten-Straatman bracht hier verandering in door de bestaande modellen te verbeteren. 'Ik…

This dissertation is an experimental study of laser-generated, atmospheric pressure, transient toroidal helium plasmas.

For centuries astronomers studied the Universe by collecting light. Nowadays, we are living in times of great technological advancements, which allow us to explore our Universe in a new way - though gravitational wave radiation.

The ultimate goal of cosmologists is to find a cosmological model able to explain the current observational data.

Promotor: Prof.dr.ir. J.W.M. Hilgenkamp, Prof.dr. J. van den Brink

At the largest scales, two ingredients dictate the distribution of matter in the Universe. The first is dark matter, acting as an invisible scaffolding held together by gravitational forces.

Het masterprogramma is officieel geopend door Z.E. Kees Klompenhouwer, de Nederlandse Ambassadeur in Tsjechië.

Festival

Promotie

Consequences for sediment stability and seston trapping

Lezing, Studium Generale

Zuid-Korea was in de jaren ‘50 het armste land ter wereld. Nu is het de tiende economie van de wereld. Hoogleraar Remco Breuker vertelt bij het radioprogramma OVT over de grote transformatie die het land doormaakte.

In condensed matter systems electron-electron interactions, negligible in everyday metals, can dramatically alter the electronic behavior of the system. Examples of such altered behavior include high-temperature superconductivity and modulation of the electron density.

This thesis is dedicated to the exploration of the primordial dark ages: unknown physics during the earliest stages of the Universe’s expansion that have not yet been directly probed by observations. Cosmic inflation is a burst of exponential expansion of space after the “Big Bang”.

We analyse the link between media consumption and the attitudes toward people living with HIV/AIDS in Chile. We used data from a sample of 1000 people, obtained in the 2011 wave of the World Values Survey (WVS). We use a logistic binary regression model by maximum likelihood. Our results suggest that…

The intracluster medium (ICM) is a hot, tenuous and X-ray emitting gas that pervades galaxy clusters.

In this thesis, I studied the origin and evolution of the non-thermal radiation in merging galaxy clusters.

This thesis develops a method for direction dependent calibration of the ionosphere in radio interferometric data.

Promotie

Het is met afstand de beroemdste kat uit de wetenschap: Schrödinger's kat die kan verkeren in een superpositie, een toestand van zowel leven als dood. Totdat je kijkt, want dan 'kiest' de kat een van de twee opties. Leidse natuurkundigen rekenden een experiment door waarmee dit raadselachtige keuzemoment…

Promotor: Koen Kuijken Co-promotor: Henk Hoekstra

The thesis describes the use of electron paramagnetic resonance (EPR) spectroscopy, in continuous wave and pulse modes, to address the interaction of α-Synuclein (αS) with membranes and the aggregation of αS.

Promotor: M.A.G.J. Orrit

A century ago, it was unclear whether the stars in the sky were clustered in groups, or widely spread in the universe.

The focus of the dissertation

n this PhD thesis, the recombination of different atomic lattices in stacked 2D materials such as twisted bilayer graphene is studied. Using the different possibilities of Low-Energy Electron Microscopy (LEEM), the domain forming between the two atomic layers with small differences is studied.

There are many interpretations of quantum mechanics, and ultimately experiments are needed to verify or falsify these interpretations.

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…

Lezing

This thesis considers multi-prover commitment schemes whose security is based on restrictions on the communication between the provers.

Promotor: K. Kuijken, Co-Promotor: H. Hoekstra

Streptomyces are bacteria abundant in soil that participate in diverse and complex interactions. These bacteria are the main producers of the antibiotics we currently use in the clinic.

Op 16 december 2021 verdedigde Lisanne van Houten het proefschrift 'Flexing the Slot Regime'. Het promotieonderzoek is begeleid door prof.dr. P. Mendes de Leon en prof. L. Pierallini (Luiss University Of Rome).

Geometric phases lead to a nontrivial interference result when an electron's different quantum mechanical paths choices encircle a magnetic coil in an Aharonov-Bohm experiment.

The high velocity tail of the total velocity distribution of stars provides essential insight into fundamental properties of the Galaxy.

Promotor: Prof.dr. M.A.G.J. Orrit