Scattering of light in the presence of nano-structured materials, i.e. with features in the order of the wavelength of the light or smaller, reveals details of how light interacts with matter at the nanoscale.

Promotor: Huub de Groot, Co-promotor: Francesco Buda

Today, knowledge is the most crucial element to stimulate organizational competitiveness and economic development.

In this project innovative technology for photovoltaics cells is developed and analysis of ecological and health related risks are explicitly accounted for.

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

Wiskunde en Natuurwetenschappen, Leids Instituut voor Chemisch Onderzoek (LIC)

OB associations are loose groups of young, massive stars. They constitute the last stage of the massive starformation process, and the context in which new stars are formed.

Supervisor: S.F. Portegies Zwart Co-Supervisor: A.G.A. Brown

Light-Harvesting Complex II (LHCII) is responsible for light absorption and excitation energy transfer in plants and photosynthetic algae, while in high light it undergoes conformational changes by which it quenches excitations to prevent photodamage.

Promotor: Prof.dr. T.J. Aartsma, Co-promotor: R.N. Frese

How can new compounds relieve cancer patients of severe side effects?

Promotor: Prof.dr. V. Icke, Co-Promotor: T.I. Madura

Walsh

Even though more than 4000 extra-solar planets are known today, only a small fraction of these has been captured in an image. To better understand the planet formation mechanisms in solar-like environments we started the Young Suns Exoplanet Survey (YSES).

Chemotherapy that does nothing until you irradiate it with light. Sylvestre Bonnet receives a Vici grant of 1.5 million euros for the development of this treatment. The Leiden chemist wants to build a new molecule to fight tumours that are at the time still difficult to treat.

Metal-containing molecules combine geometrical features and a reactivity that are inherently different from that of organic molecules. My research focuses on light-activatable metal-based anticancer drugs and metal-functionalized liposomes. Light is a very selective way to activate photosensitive drugs…

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

It appears to be a paradox: ultra-thin material that absorbs all the incident light. Nonetheless, it does exist. Two Leiden researchers report on their research in ‘Applied Physics Letters’. The article is among the Top 20 of the most downloaded articles of this reputable journal in May.

Wolfgang Lüffler

Solar energy is used by photosynthetic organisms to drive energy required cellular processes. Is absorbed by two groups of pigments, located in the LHCs.

What is the origin of solar systems?

The aim of this facility is to accelerate biomedical research by providing access to advanced light and electron microscopy and by sharing expertise about sample preparation, imaging modalities, data storage and image analysis.

This study stresses the importance of investigating vitamin D deficiency in every community to better understand the deteriorating effect that sociocultural practices may have had on health.

Promotor: M.A.G.J. Orrit

The roof of the lecture halls at the Faculty of Science was fitted with solar panels in June, making it the biggest solar-panel-covered roof in Leiden.

Promotor: H.V.J. Linnartz

On the 23rd of January, Anastasiia Ionova successfully defended her doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Anastasiia on this achievement.

Molecules are extremely hard to see in visible light, especially without using fluorescence. Leiden physicists have now made their optical technique sensitive enough to image the molecules of their interest in all sizes. Publication in Nanoletters.

How can lasers control the growth of new blood vessels?

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

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

Polycyclic aromatic hydrocarbons (PAHs) are the most abundant class of organic compounds in space. The PAH field evolves from the constant interaction between experimentalists, theorists, modellers and observers. While laboratory research and quantum chemical calculations together set up the molecular…

Can light-activatable ruthenium compounds be used as a more selective anticancer treatment?

This project addresses the occurrence of political and ideological biased crimes in light of the recent migration influx in European countries.

Promotores: Prof.dr. J. Schaye & Prof.dr. C. Steidel (California Institute of Technology)

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

Promotor: Koen Kuijken Co-promotor: Henk Hoekstra

Gold nanoparticles show surprisingly strong interactions with light in the visible range, which can be divided into scattering, absorption, and photoluminescence.

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

All the planets in our solar system orbit around the Sun in an ecliptical plane. This is to be expected because our solar system was formed from a so-called protoplanetary disc. PhD candidate Anna Miotello has studied these kinds of discs and how they influence the formation of stars and planets. PhD…

Rossi

The main question of this research project concerns the extent to which light verbs in West Germanic languages participate in processes of language change.

After nearly 70 years, the Leiden Observatory has a new telescope. A crowdfunding action in March brought in the 20,000 euros required to build a solar telescope. On 19 September Rector Magnificus Carel Stolker officiated at the opening.

Research in the van Exter lab focuses on quantum aspects of light and light-matter interaction. One of our long-term goals is to develop a reliable quantum memory, based on a single emitter in an open micro cavity.

PURPOSE: In the present study we investigated the root-cause of an interference signal (100-200 nm) of sugar-containing solutions in dynamic light scattering (DLS) and nanoparticle tracking analysis (NTA) and its consequences for the analysis of particles in biopharmaceutical drug products.

Former PhD, Bachelor and Master students of the Van Exter Lab

Promotores: Prof.dr. H.P. Spaink & Prof.dr. P.C.W. Hogendoorn, Co-promotor: Dr. M.J.M. Schaaf

The Honours Class From Solar to Fuel with Bio consisted almost entirely of the workshop on Solar Biofuels from Micro-organisms that drew more than eighty specialist researchers to Leiden's Lorentz Centre in late March/early April. Students Erica Wenker (chemistry) and Jasper van Dobben de Bruijn (law)…

Light obscuration (LO) is the current standard technique for subvisible particle analysis in the quality control of parenterally administered drugs, including therapeutic proteins.

A more efficient solar panel sounds great. But what if these new panels consume more toxic materials, or their production consumes a lot of energy? Leiden environmental scientists, together with colleagues from the Fraunhofer ISE, address this multifaceted question in a new publication in the prestigious…