In this thesis, I study the formation of large-scale structure and the physics of particle acceleration at large scales (~Mpc).

Inspired by natural photosynthesis, perovskite-based photoelectrochemical (PEC) systems are being developed for artificial photosynthesis, aiming to enhance solar-to-hydrogen conversion for green energy.

For each living organism health is ensured by correct functioning of its cells. Cells therefore have elaborate methods for regulation of their proteins.

The CMCB brings together a diverse range of unique expertise in microbial cell biology. Members of the CMCB investigate both model and non-model organisms, bacteria and archaea, pathogens and non-pathogens.

In this thesis, bioorthogonal chemistry is combined with correlative light-electron microscopy to selectively label and study pathogenic intracellular bacteria within the host immune cell.

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For centuries astronomers studied the Universe by collecting light. Nowadays, we are living in times of great technological advancements, which allow us to explore our Universe in a new way - though gravitational wave radiation.

Nature publishes an article on a paradoxical discovery in superconductivity. Physicists are searching for superconductivity at high temperatures so that less cooling is needed in for example MRI machines. News & Views article by Prof. Jan Zaanen in the same issue of August 19th.

The Nobel Prize in Physics 2016 goes to David Thouless, Michael Kosterlitz and Duncan Haldane for theoretical discoveries in the field of topological materials. Haldane spent part of 2008 in Leiden; he is the 14th Lorentz Professor to win a Nobel Prize.

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

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

Promotors: Prof.dr. J. Zaanen, Prof.dr.ir. H. Hilgenkamp

Because thin systems can deform along the thickness with relative ease, the interplay between surface mechanics and geometry plays a fundamental role in sculpting their three-dimensional shape.

This thesis contributes to studying primordial cosmology theories and their detectability in future observations.

The first book ever on information-theoretically secure multiparty computation

Many important topics in computer science, such as the correctness of software, the efficiency of algorithms and the modeling of complicated systems, depend on sound theoretical underpinnings. In the Theory group, we study these fundamental building blocks and develop verification methods to prove system…

This thesis is about cosmological inflation and its relation to observations.

Lecture

PhD defence

PhD defence

The "Van Marum Colloquia" are a collaborative lecture series between the LION and LIC institutes, focusing on fundamental and applied surface science.

Despite the rain and awful weather, the painting job has been finished within a week. The Van der Waals-state equation is the eighth Leiden wall formula.

Leiden Physicists have found evidence for the Berry-force that could be used for driving tiny nanomotors, just like a river drives a water wheel. Nanomotors could be used for drug delivery in the human body. Publication in Beilstein Journal of Nanotechnology.

For Leiden students and alumni, it might just be the week they feel most nostalgic about: EL CID week. This year sees its 50th edition. A small exhibition in Plexus Student Centre shows that although much about EL CID has changed – student fashion sense, for one – the formula has remained the same.

Five researchers from Leiden University have been awarded a Starting Grant by the European Research Council (ERC). This grant of on average 1.5m euros enables researchers who show potential to start their own project, lead a research team and implement their best ideas.

Physics professor Jan Aarts starts a collaboration with chip manufacturer Intel to perform fundamental research in low-power, cryogenic computing.

In een goedgevuld Teldersauditorium vond op maandag 24 juni het symposium ‘Het Erfgoed van Meijers: 70 jaar waardering en inspiratie’ plaats. Vanuit verschillende perspectieven werd gereflecteerd op de omvangrijke nalatenschap van de Leidse hoogleraar Eduard Maurits Meijers, die precies zeventig jaar…

Victorian Fairy Tales

This thesis takes steps toward understanding the interaction between gas-phase and solid-state molecules in star- and planet-forming regions.

In this dissertation, matching, entropy, holes and expansions come together. The first chapter is an introduction to ergodic theory and dynamical systems.

The aim of this dissertation is to present a critical edition of kāṇḍa 15 of the Paippalādasaṁhitā (PS) of the Atharvaveda.

Abdessamad El Amraoui defended his thesis on 6 Mai 2015.

The Routledge Handbook of Contemporary Vietnam is a comprehensive resource exploring social, political, economic, and cultural aspects of Vietnam, one of contemporary Asia’s most dynamic but least understood countries.

Lecture

In the master's specialisation Global Ethnography, will follow several courses that aim to make your research project as successful as possible. From writing an academic research proposal to the complex task of writing up data once you return from the field. Each student also receives individual supervision…

Learn how to conduct policy-oriented research, join one of our field schools and gain relevant working experience.

Study information, Webinar

Study information, Webinar

Study information, Webinar

Majorana particles have been getting bad publicity: a claimed discovery in ultracold nanowires had to be retracted. Now Leiden physicists open up a new door to detecting Majoranas in a different experimental system, the Fu-Kane heterostructure, they announce in Physical Review Letters.

The Italian physicist Andrea Morello is one of the pioneers of the quantum revolution. He is currently doing research at the University of New South Wales in Sydney, but cherishes his time as a PhD candidate in Leiden.

Measurements on a superconducting material show an abrupt transition between a normal metal and a 'strange' metal. The really strange thing, however, is that this abruptness disappears when the temperature falls. 'We don't have any theoretical machinery for this', says theoretical physicist Jan Zaanen,…

To be able to measure small forces or small deviations from Boltzmann, the external vibrations at the resonance frequency must be very low. To achieve this, we have developed a very soft vibration isolation system and combine it with several other measures to reduce vibrations in our dilution refrigerators.…

An overview of awards and prizes granted to our staff and students in 2017, as well as special appointments and royal distinctions.

The dissociative chemisorption of a molecule on a transition metal surface represents a rate-limiting step in many heterogeneously catalyzed processes, whereby most chemicals are made. In spite of the importance of this reaction, an accurate first principles approach to modeling it does not yet exist.…

A microscope with incredible sharpness that leaves samples unharmed – Guido Stam helped develop one. During his PhD research, he combined light and electrons to study biological samples. ‘We can now measure things that simply weren’t possible before.’

Consumers are encouraged to think of food production and consumption as amoral activities – Michiel Korthals in his book Goed Eten: Filosofie van voeding en landbouw (2019, 353)

Irene Battisti is the discoverer of the year 2019. The physicist won the C.J. Kok Public Award for her research into microscopy and superconductors.