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

The application of nanomaterials in industrial processes and consumer products provides many societal benefits, but can also lead to the release of nanomaterials into the environment. The work in this dissertation aims to provide insights into the potential environmental impacts that may follow from…

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

Humans share meaning through language. Over time, repeated interactions have shaped languages into forms that match our cognitive preferences, making them structured, expressive, easy to learn, and ultimately, meaningful.

This thesis focuses on data found in the field of computational drug discovery. New insight can be obtained by applying machine learning in various ways and in a variety of domains. Two studies delved into the application of proteochemometrics (PCM), a machine learning technique that can be used to…

Het project onderzoekt hoe tweetalige sprekers omgaan met lexico-syntactische kenmerken – waaronder grammaticaal geslacht, classifiersystemen en de lineaire volgorde van adjectieven en naamwoorden – in het Spaans en het Chinees, zowel in eentalige als tweetalige contexten.

This thesis combines field and laboratory studies to address some of the most pressing questions in the field of microplastic research.

In this thesis, we consider various (electro)chemical phenomena at surfaces and nanoparticles and their underlying atomistic processes, which we studied using first-principles methods such as density functional theory.

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.

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

Promotor: A.P.IJzerman Co-promotor: A. Bender

Dit project gaat over de eigenschappen van kwantiteitsuitdrukkingen in verschillende talen vanuit het perspectief van hoe kwantiteit in het menselijk brein wordt weergegeven.

Dit doctoraatsproject onderzoekt voornamelijk op welke manier (d.w.z. serieel, parallel of op een andere manier) de parser het Mandarijn-Chinees verwerkt. Daarnaast wordt onderzocht of er specifieke taalkundige kenmerken zijn die de decodering van het Mandarijn-Chinees bepalen en die verschillen van…

Dit onderzoek gaat over de verschillen tussen luisteraars in de waarneming van prosodie.

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.

Lezing, SMILE Talks

Lezing, LUCL Colloquium

De Verenigde Naties hebben 11 februari uitgeroepen tot International Day of Women & Girls in Science. De Universiteit Leiden viert deze dag met een open publieksevenement met vrouwelijke topwetenschappers van haar bètafaculteit. Iedereen is welkom vanaf 13:30 uur in het Kamerlingh Onnesgebouw in Lei…

Van de 111 Spinozapremies die sinds 1995 zijn toegekend gingen er 28 naar Leidse wetenschappers.

What is the effect of light at night on plant phenology and physiology, and how does this affect plant interactions with other species?

Promotor: Prof.dr. E.F. van Dishoeck, Co-Promotor: M.R. Hogerheijde

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.

Planets are formed in disks of gas and dust around young stars.

This thesis focuses on protoplanetary disks: flattened structures of gas and dust around young stars in which planets are expected to form and grow.

Promotor: Jelle S. Kaastra Co-promotor: Jelle de Plaa

A dense region of a gaseous and dusty cloud collapses to form a protostar surrounded by a disk and an envelope. This thesis uses both observations and models to study physical and chemical conditions of these protostellar systems which are likely where planets start to form.

This thesis focus on the interaction between M dwarf stellar winds and Galactic cosmic rays and the possible effects on the habitability of exoplanets.

Promotor: Prof.dr. E.F. van Dishoeck

The physical origin of the dozens of stellar-mass binaries, the mergers of which have been detected by the LIGO-Virgo-KAGRA collaboration via gravitational waves, is still unknown.

Promotor: J.S. Kaastra Co-promotor: E. Constantini

Nowadays, it is well known that hydrogen and helium (and small traces of lithium and beryllium) were created shortly after the Big Bang, while the heavier elements are created in the cores of stars at different evolutionary stages. When these stars explode as supernovae, they expel metals synthesised…

Tracing the evolution of the molecular gas content in galaxies is critical for a complete understanding of galaxy formation and evolution, as it provides the direct fuel for star formation. Studies of high-redshift (z>1) molecular gas reservoirs, most commonly traced by carbon monoxide (CO), have seen…

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

This thesis focusses on the temperature structure in protoplanetary disks. The relation between structures seen in the dust and gas-phase molecules is investigated.

Promotor: Prof.dr. I.A.G. Snellen, C.U. Keller

Outflows are crucially important for the gas budget and evolution of luminous star-forming galaxies and AGNs, with observed mass outflow rates of the same order as the star formation rate. Greater star formation and black hole growth lead to more intense feedback and outflows, resulting in self-regulated…

Multiple stars, that is two or more stars composing a gravitationally bound system, are common in the universe.

High-angular-resolution observations of the circumstellar material have uncovered numerous and very diverse substructures in protoplanetary discs, raising the question of whether they are caused by forming planets or other mechanisms.

Until the 1990s, the only known planets were those in our Solar System. Three decades later, several thousand exoplanets have been discovered orbiting stars other than the Sun, and substantial efforts have been made to explore these strange new worlds through spectroscopic analyses of their atmosphe…

Stars and planets form within cold, dense clouds of gas and dust drifting through interstellar space. Although dust makes up only a small fraction of this material, it plays a key role in shaping the chemical evolution of these environments.

This research focuses on the distribution of chemical elements in protoplanetary disks, the birthplaces of planets. These disks form around young stars and contain gas and dust, from which planets grow. Ice plays a crucial role in planet formation, aiding the clumping of dust particles and influencing…

Stars like the sun are born in large molecular clouds existing from gas and dust. During the formation process, the chemical composition of the material can be altered drastically by the changing physical conditions.

The focus of this thesis is how stars like our Sun and planets like Jupiter, Saturn, and Earth are formed.