De biomedische wetenschap heeft een steeds grotere behoefte aan beeldmateriaal van biologisch materiaal op het niveau van cellen en eiwitten. Tjerk Oosterkamp, hoogleraar Experimentele natuurkunde, is gespecialiseerd in het ontwikkelen en gebruiken van tastmicroscopen om biologisch materiaal te bestuderen.…

This thesis described the development of novel scanning tunneling microscopy techniques to investigate strongly correlated electronic states in quantum matter.

Het oppervlak savanne in West- en Centraal-Afrika neemt snel af, met desastreuze gevolgen voor de leeuwenpopulaties die hier hun leefgebied hebben. Zonder beschermingsmaatregelen zijn er over tien jaar in dit deel van Afrika geen leeuwen meer. Journal of Biodiversity and Conservation, 4 december 201…

Alumni-activiteit, Lezing

Promotor: C. W. J. Beenakker, Co-promotor: J. K. Asboth

Optical cavities are useful tools to enhance the interaction between light and matter, which is important to make good quantum emitters. However, it turns out that the cavities themselves (without any quantum emitters) are already interesting objects to study.

In this thesis, we examine various systems through the lens of several numerical methods.

The dissertation describes TEM experiments on heterogeneous catalysts.

The thesis describes experimental steps towards reduction of friction on the macroscopic scale by scenarios of thermo- and superlubricity well-known on the nanoscale.

In samenwerking met het Afrika-Studiecentrum Leiden.

In het kader van Big Cat Month interviewde National Geographic professor Hans de Iongh, gastonderzoeker bij het Centrum voor Milieuwetenschappen Leiden (CML), over bescherming en behoud van leeuwenpopulaties in Afrika.

Wereldwijde persaandacht voor het artikel en vooral de afgbeelding van het 30 micrometer lange microbootje 3DBenchy van Rachel Doherty, Daniela Kraft en andere Leidse natuurkundigen.

CrO2, a half-metal ferromagnet, has shown great promise for superconducting spintronics applications for nearly two decades.

In this thesis, time-lapse fluorescent microscopy plays a pivotal role in investigating functional materials within living cells as well as the migratory behaviour of neural progenitor cells.

The studies in this thesis are focused on the physical effects in the flat band materials. The results contain the discovery of strong enhancement of RKKY spin-spin interactions with specific geometric arrangement and dynamical generation of excitonic order parameter with high magnitude.

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

This thesis consists of two subjects, that are both a consequence of radiation pressure.

Promotores: Prof.dr. D. Bouwmeester, Prof.dr. A. Fiore (TU Eindhoven)

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

In this thesis, classes of strongly interacting quantum field theories, have been studied.

Mechanical interactions between cells and their environment play an important role in many biological processes.

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

This thesis examines silicon pore optics (SPO), a technology that exploits silicon wafers from the semiconductor industry to create extremely high quality X-ray optics, by studying its manufacturing process, applications, and prospects.

A Josephson junction is a device where a thin insulating barrier or a nanostructure is placed between two superconducting leads. Such a junction is essential to superconducting qubits that store quantum information due to its anharmonic spectrum.

Make more fluid: In condensed matter systems, electrons can acquire unusual properties from their interaction with the atomic lattice.

Gold nanorods are biocompatible nanoparticles that present an excellent two-photon signal that can be used to get high spatial resolution inside living cells. Gold nanorods are photostable and therefore can be followed inside cells for long time, with possible applications as trackers in live cells.

In unconventional high temperature superconductors, supercurrent vortices are known to spoil the Landau levels. In this thesis the emergence of Landau levels is studied in different types of superconductors: Weyl superconductors, and the Fu-Kane heterostructure.

The interest of this thesis lies in spin transport in normal metals and superconducting half-metallic junctions.

In this thesis I describe the results of Pulsed Interleaved Excitation and Fluorescence (Cross) Correlation Spectroscopy (PIE-F(C)CS) combined with single-pair Förster Resonance Energy Transfer (spFRET) used to study dynamics in single nucleosomes, which depends on subtle differences in the length of…

In de geest van ‘eenheid door verscheidenheid’ is ons doel het bevorderen van inzicht in en waardering voor het wonder dat dezelfde natuurkundige wetten en wiskundige concepten van toepassing zijn op de hele natuur, van de grootste tot de kleinste energie- en lengteschalen. Wij streven naar de toepassing…

Promotie

Promotie

Promotie

Subproject of the ERC project 'Challenging the Liberal World Order from Within: The Invisible History of the United Nations and the Global South'.

The expedition commanded by Nicolas Baudin to Tenerife, Mauritius, Australia, Timor and South Africa in 1800-1804 is fully researched in regard to ornithology.

The project Multimedia Research and Documentation of African Oral Genres: Connecting Diasporas and Local Audiences (Director: D.Merolla) focuses on multimedia as technology that allows scholars to share documentation and scientific knowledge with the cultural owners of the collected oral genres.

Fundamental research in the ALgebra, Geometry And Number Theory

Promotors: Prof.dr. G.R. de Snoo, Prof.dr. H. Leirs (Univ. Antwerpen)

Natural resources often stretch across borders that separate modern nation states. This can create conflict and limit opportunities for regulated consumption of their goods and services, but also provide opportunities for joint multinational efforts that exceed single country capabilities.

De onderzoeken aan het Leiden University Centre for Linguistics (LUCL) richten zich op taalvariatie en taaldiversiteit. Om zowel de maatschappelijke als de wetenschappelijke kennis over dit onderwerp te vergroten, zijn de onderzoeken ondergebracht in zes overkoepelende (en overlappende) onderzoeksprogramma’s.…

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.

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…

Onderzoeksgroepen in het Quantum Matter & Optics onderzoeksprogramma onderzoeken elektronische eigenschappen van interacties van materie en lichtmaterie, met de nadruk op quantuminformatie.

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

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…

The first direct detection of gravitational waves opened the possibility of mapping the Universe via this new and independent messenger.

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.