One of the key discoveries in exoplanet research over the past decade is the abundance of small planets in our Milky Way. Despite their high numbers, our understanding of their atmospheres remains limited, and it is unknown if they possess atmospheres at all.

Material circularity and energy efficiency are highly relevant and intertwined issues for the transition towards a carbon-neutral and circular built environment. In the Netherlands, the building sector has been rendered a priority towards a circular and low-carbon society.

Shape and biological function are tightly connected. Physical descriptions are used to connect the shape of a biological system with its function.

Mycoheterotrophy is a particular mode of life in which plants obtain carbohydrates from their associated fungal partners, instead of by using photosynthesis.

One of the most important correlation functions in physics, especially in cosmology, is the energy density, which describes how much energy is present at each point in spacetime due to matter fields. A key contribution to the energy density of the primordial universe comes from gravitational waves (GWs),…

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.

Of all the mass in our Universe, 80% is thought to consist of a hypothetical and invisible substance called dark matter (DM).

Sound is everywhere in the marine environment and hearing is therefore a very important for stimuli for fish. They use sound for orientation and communication, during migration, aggregation and spawning, but also for detection of prey and predators.

The haplolepideous mosses (Dicranidae) comprise about 4000 species distributed over a wide range of habitats, with great gametophytic and sporophytic morphological variation. Their monophyly is well supported by the results of several molecular phylogenetic studies, which shed light on their relationships…

As leading cause of death worldwide, cancer is responsible for nearly 10 million deaths in 2020 according to World Health Organization (WHO). Cisplatin and its derivatives are commonly used chemotherapy agents for current cancer treatment in the clinics.

Migration imposes special pressures on the meaning, experience and organization of lifecycle rituals. These pressures are felt most strongly by Muslim migrants to Western Europe. In this innovative study, Nathal M. Dessing examines the effects of migration on the life cycle rituals of Moroccan, Turkish…

Promotores: Prof.dr. M. Franx, Prof.dr. P.G. van Dokkum (Yale University)

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

Promotor: Jan van der Greef; Co-promotors: Mei Wang; Eduard van Wijk

In this PhD study, I aim to deepen our understanding of the influence of major mycorrhizal types, namely arbuscular mycorrhizae (AM) and ectomycorrhizae (EM), on the global soil carbon cycle and their potential distribution changes under future environmental shifts.

Human vocal communication and music perception represent advanced cognitive skills, seemingly innate and universal. These faculties encompass a range of perceptual and cognitive abilities. Cross-species research sheds light on the origins of musicality by investigating whether these traits are shared…

Electron microscopy has become an extremely important techniquein a wide variety of elds.

This thesis is devoted to an in-depth examination of the various effects of disorder in the cuprate high-temperature superconductors.

Promotor: Prof.dr. M.L. van Hecke, Co-Promotor: V. Vitelli

A new type of tripodal squaramide-based supramolecular hydrogels is developed and studied.

In de zomer van 2023 trokken geïnteresseerden eropuit om de luchtkwaliteit in Leiden in kaart te brengen. Met behulp van een techniek van Brits kunstenaar Robin Price maakten ze het onzichtbare zichtbaar om zo het gesprek over het belang van goede luchtkwaliteit te kunnen starten.

Promotor: D. Bouwmeester, Co-promotor: D. Kraft

De afdeling Environmental Biology (CML-EB) houdt zich bezig met vraagstukken rondom biodiversiteit en natuurlijke hulpbronnen op het platteland in westerse en niet-westerse gebieden.

De Leidse promovendus Xuequan Zhou heeft een veelbelovend nieuw molecuul ontworpen dat effectief kankercellen kan bestrijden zonder hierbij ook de gezonde cellen aan te tasten. De truc: het medicijn wordt pas actief als je het bestraalt met licht. Zhou’s nieuwe molecuul is extra efficiënt, aangezien…

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

De Filmclub is een subvereniging van ProParte.

Promotor: Prof.dr. E. Smets, M. Stech

The work described in this dissertation contributes to a better mechanistic understanding of nanoparticles in vivo. To achieve that goal, we used the zebrafish as a highly predictive pre-screening model of nanoparticles.

When a star gets too close to a supermassive black hole, it is torn apart by strong tidal forces in a tidal disruption event (TDE).

Op 23 februari 2022 verdedigde Cale Davis het proefschrift 'Prosecutorial Discretion in International Criminal Justice'. Het promotieonderzoek is begeleid door prof.dr. C. Stahn en dr. J.C. Powderly.

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

The redox-conversion reaction of metal-disulfide and metal-thiolate complexes are important, as they may shed light on electron-transfer reactions that often occur in Nature.

Promotor: Prof.dr. E.F. Smets, Co-Promotor: L.W. Chatrou

In light of climate change, it is crucial to determine whether plant species can adapt to future climates to avoid extinction. Plants adapt to various conditions by altering their functional traits, such as leaf size or photosynthetic rate. Some traits appear linked and vary together between species,…

Astronomical observations of cold regions in the universe show a rich inventory of ices. Part of these ices may end up on planets like our own, but in that journey they will be exposed to considerable amounts of radiation.

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

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

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

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.

Promotor: Huub J.M. de Groot, Co-promotor: Francesco Buda

Promotor: Prof.dr. D. Bouwmeester, Co-Promotor: M.J.A. de Dood

Binnen Quantum Leiden doen verschillende groepen onderzoek naar quantumnetwerken en quantumsensing.

De LUMC Alumni Vereniging is in 1996 opgericht om enerzijds de band tussen het Leids Universitair Medisch Centrum en zijn alumni te versterken, anderzijds om de band van de alumni onderling te versterken.

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

Cryogenic electron microscopy (cryo-EM) is a powerful technique used to visualize the inside of cells and to study specific protein complexes. Within this thesis, I describe the use of various cryo-EM techniques to gain insight into the structural changes of the human pathogen, Vibrio cholerae, as it…

Op 21 oktober 2021 verdedigde Frederik Behre het proefschrift 'A European Ministry of Finance?'. Het promotieonderzoek is begeleid door promotor prof.dr. S.C.G. Van den Bogaert.

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

Plants produce an astonishing variety of secondary metabolites (SMs) which are thought to play vital roles in the fitness of plants through ecological interactions.

Promotor: Prof.dr. D. Bouwmeester

This dissertation presents new cryptographic protocols, which can be divided into two families.