Sustainable energy from wind and solar is most readily available near the sea.

This thesis aims to improve the detection from ultra-weak single emitter by enhancing their emission properties with plasmonic nanostructures. We exploit the wet-chemically synthesized single crystalline gold nanorods (GNRs) as our basic frameworks in the whole studies, simply because of their unique…

This work describes several studies into the electroreduction of carbon dioxide (CO2RR), both regarding mechanistical aspects and catalyst stability considerations. Mechanistic insights into carbon-carbon bond formation on a silver catalyst are described in Ch 2, were we find an acetaldehyde-like surface…

Als docent op de Johan de Wittschool ben je dagelijks getuige van een microgemeenschap waarin grote verschillen voorkomen, en daaruit voortvloeiende conflicten. Dat stelt Matthias Schotanus, student van het Leiden University College en deelnemer aan het Community Project ‘Engage The Hague’. Op 2 juni…

De nationale quantumcursus maakt de wereld van de allerkleinste deeltjes toegankelijker voor iedereen. Quantumexpert Julia Cramer is het gezicht van de cursus en was bij de lancering. En wat is daarvoor een betere plek dan Madurodam - waar alles klein is?

Promotie

Archeoloog Victor Klinkenberg onderzocht een oude Assyrische nederzetting in Syrië, dichtbij IS-bolwerk Raqqa. ‘Al met al speelde het sociale leven een veel grotere rol dan het militaire.’ Promotie op 27 oktober.

Promotor: Prof.dr. C.U. Keller

Religion, Philosophy, and the Pre-modern World

Op zondagavond 25 september gaan alle lichten in Leiden uit en zien we de sterrenhemel boven ons in volle glorie fonkelen. Een unieke kans voor alle inwoners van Leiden om de grootsheid van de kosmos te ervaren en het indrukwekkende kunstwerk te bekijken dat elke nacht boven ons hoofd hangt. Alleen…

Universiteitsorganist Jan Verschuren en beheerder Bert Crama vertellen over de orgelgeschiedenis, improviseren bij cortèges en hun liefde voor het orgel.

Samen met studenten en buurtbewoners deden historici Ariadne Schmidt en Alicia Schrikker onderzoek naar de Leidse Transvaalwijk. Donderdag 20 oktober presenteren ze de resultaten op een speciaal georganiseerd minifestival in de wijk.

De onderzoekers van het departement ‘World Archaeology’ van de Faculteit Archeologie richten zich in hun onderzoek op verschillende periodes en regio’s: van de oorsprong van de mens tot aan de Middeleeuwen en de moderne tijd, en van Azië tot Zuid-Amerika.

When you have decided to participate in a Summer School of Leiden University, there are some matters you need to know before arrival. Please take a few minutes to read through the information here to find out what you can do from your side to smooth the process.

This study has been carried out in the community of Sukamiskin, a kelurahan (‘village’) in Bandung, the Capital of West Java Province, located in the Sunda Region of Indonesia.

Promotor: M.A.G.J. Orrit

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

Leiden University’s Academic Challenge

Binnen de sectie Gezondheids-, Medische en Neuropsychologie wordt onderwijs verzorgd en onderzoek verricht op verwante deelgebieden van de psychologie: Gezondheids-, Medische en Neuropsychologie.

Leiden was in 2022 European City of Science: een jaar was Leiden hoofdstad van de Europese wetenschap. De Universiteit Leiden was trotse partner van Leiden2022.

Promotie

Promotor: I. A. G. Snellen, Co-promotor: M. A. Kenworthy

We have studied the impact of particle shape anisotropy, multivalent interactions and flexibility on systems of micron-sized colloidal particles.

This thesis revolves around the electronic spectroscopy of molecules in the laboratory and the search for the carriers of the diffuse interstellar bands (DIBs).

Promotor: P.J.J. Hooykaas, Co-Promotor: E.J. van der Zaal

Microbial rhodopsins are photosensitive pigments implemented in the growth and adaptation of a large population of microorganisms.

A large diversity of exoplanetary systems has been found, but it is still unclear what drives this diversity.

This dissertation focused on computational methods based on first principles calculations using the Density Functional Theory (DFT) framework. Emphasis was laid on affordable methods that can provide a tradeoff between computational expense and accuracy.

The Vallesian, 11.1-9 Ma, was a special time in the Vallès-Penedes basin near Barcelona, where a biodiversity hotspot existed. Europe had a subtropical climate, with rhinos, forest giraffes, lions, hyenas, flying squirrels and primates.

Promotor: Prof.dr. J. Kuiper

Promotores: H.S. Overkleeft; G.A. van der Marel Co-Promotor: B.I. Florea

Promotor: Prof.dr. D. Bouwmeester

Binnen het brede netwerk van de Universiteit Leiden neemt het instituut deel aan onderzoek binnen de volgende profileringsgebieden:

On the largest scale, the Universe resembles a cosmic spiderweb. Most galaxies coexist in small groups within the threads of this web. At the nodes of the threads are enormous groups of galaxies forming the largest structures in the universe still held together by gravity: clusters of galaxies.

This thesis systematically analyzes the physical-chemistry of lipid-graphene interactions with the major objective of reconciliating the variety of results reported in the literature.

Promotor: Prof.dr. A.P. IJzerman, Co-Promotor: L.H. Heitman

Promotores: S.F. Portegies Zwart, E. M. Rossi

Spectroscopic studies on fluorescent single molecules in organic condensed matter does not only provide information about the molecule itself, but also its near environment. By suppression of phonon-induced broadening of spectral lines through cooling to low temperatures, small changes in the spectral…

Promotor: Prof.dr. P. Stevenhagen, Co-promotor: B. de Smit

Molecular materials have been a subject of interest in fundamental research and applications for decades, and have been studied as bulk crystals, (thin) films and as individual molecules, due to the large variety in their properties. This dissertation explores pentacene crystals near the two-dimensional…

In this thesis, deep learning is studied from a statistical perspective. Convergence rates for the worst case risk bounds of neural network estimators are obtained in the classification, density estimation and linear regression model.

Promotie

The work presented in this thesis is based on ALMA surveys of protoplanetary disks in three star-forming regions: Lupus, OMC-2, and NGC 2024.

Promotor: P. T. de Zeeuw, Co-promotor: N. Neumayer; G. van de Ven

In surface science there is great effort to move from studying simple, flat model surfaces in vacuum to investigating more complex model catalysts in gas environments (in situ). This thesis gives three examples of such studies using microscopy and spectroscopy.

A modern ship design process is subject to a wide variety of constraints such as safety constraints, regulations, and physical constraints.

Why do black holes emit thermal radiation? And how does a closed quantum system thermalize?

Development of GHG calculator for bio-electricity and heat.

Bacterial chemosensory arrays are protein assemblies that are the key structural and functional component for motile bacteria to sense their internal or environmental chemical signals.

Promotor: E. Bouwman, Co-promotor: S. Bonnet