Majorana fermions in superconductors are the subgap quasiparticle excitations that are their own antiparticles.

What are the phylogenetic relationships among the members of speciation bursts?

Advanced sensing techniques require graphene with high quality and well-controlled surface chemistry.

How can we develop and further improve life cycle impact assessment methods, characterisation factors and normalisation factors?

The arts and science: for years, they were seen as opposite extremes. One calls on emotion and the other on reason. The Academy of Creative and Performing Arts (ACPA) proves that nothing could be further from the truth. ACPA is where the knowledge and expertise of Leiden University and the University…

In Quantum mechanics, particles can be in multiple positions simultaneously. Yet, when a measurement is made, the particle is found only in one place. Technology has come to a point where we may design experiments that will tell us how.

Data science is now growing fast in many places, but scholars at Leiden University have been developing data science techniques for a long time already. Thanks to their broad-based expertise, Leiden statisticians are currently combining the achievements in statistics with the latest methods of statistical…

A lot of our research is performed at temperatures close to absolute zero, among other reasons because this increases the sensitivity of the measurements. 

In this dissertation, electrophysiological (EEG) and behavioural measures are used to investigate how allophonic tonal variants and sub-phonemic features are processed during Mandarin and Dutch speech production, visual processing of written words and reading aloud.

We are a dynamic research group at the Leiden Institute of Physics. Our aim is to explore and understand quantum materials, including strange metals, high-temperature superconductors, and quantum critical electron matter.

Promotor: Prof.dr. M.A.G.J. Orrit

In this thesis,

Animal Sciences’ contributions to the Evolution & Biodiversity research theme include evo-devo research, the evolution of cognitive and behavioural traits, and the evolutionary mechanisms of stress adaptation. This research involves both indoor and outdoor studies.

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.

Underwater noise from seismic surveys affects the behaviour of Atlantic cod. These are the results of research by Leiden biologists in collaboration with colleagues from Belgium. During such surveys the fish are less active than usual and their circadian rhythm is disrupted; soon after exposure they…

Leiden and Jülich researchers discovered an elegant and simple approach to improve the sensitivity of graphene biosensors. These so-called ‘next generation graphene electronic biochemical sensor devices’ are able to detect very low amounts of HIV DNA thanks to their very low electronic noise.

Wouter Halfwerk (IBL) received a Veni grant from the Netherlands Organization for Scientific Research for his research project on the influence of man-made noise on foraging birds.

Marcel Cobussen, professor of Auditory Culture and Music Philosophy, has made listening his speciality. From the sounds of a microwave to chirruping birds, he studies how people treat noise in their environment and what kind of information sounds can give. His mission: to teach people to listen better…

Leiden physicist Milan Allan and his group have discovered an apparent paradox within a material that has zero electrical resistance. They measured trapped charges, while charges should in theory keep flowing in the absence of resistance. The discovery could provide a missing piece of one of the big…

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Birds around airports are more aggressive and sing as if they have hearing loss. Collaboration between researchers of Manchester Metropolitan University and the Institute of Biology Leiden has led to surprising new findings about the impact of anthropogenic noise on birds around airports. Publication…

The Housing Office offers accommodation for international students in Leiden and The Hague via DUWO student housing corporation.

Fishes rely heavily on sound to find their way during migration or dispersal. Many species are affected by noise pollution. Hans Slabbekoorn from the Institute of Biology Leiden received a HORIZON2020 grant of 500,000 euros to study the impact of sound conditions on movement decisions of fishes.

Mathematician Stéphanie van der Pas, the winner of the C.J. Kok Jury Award for her Ph.D. thesis in 2017, divides her time between research and education, and between pure mathematics and practical application.

How can we organise society so as to keep our planet habitable for us and for all other life forms around us? To answer this question, Leiden researchers collaborate across disciplines, from biology to data science, and from environmental economy to archaeology.

Leiden University is building a new Asian Library on top of the University Library (UB) at the Witte Singel in Leiden. Work starts on 26 April 2016, and is expected to last until the end of December.

The Trio, a people living in Suriname and Brazil, are ‘masters of creation’. Their immense knowledge of nature and materials enables them to live in the jungle. Archaeologist Jimmy Mans follows the Trio.

This year Leiden University exists for 444 years! This will be celebrated together with the residents of Leiden and The Hague during various activities. One of these is scientists and residents doing research on plastics and psychology together.

Smart algorithms and powerful processors are just as essential for astronomy as big telescopes. Astronomers at Leiden University therefore constantly operate at the interface between astronomy and data science.

On the 15th of October, IMARES and IBL co-organized a symposium on underwater acoustics related to research on fish and marine mammals.

How can we improve the everyday sounds of the city? In his inaugural lecture on 28 November Marcel Cobussen, Professor of Auditory Culture, advocates using the expertise of sound artists to raise the quality of acoustic environments in cities.

Alderman Robert Strijk from the Leiden municipality officially opened the artwork Whispering Wind by Edwin van der Heide on Wednesday November 29.

Adva Eichengreen starts a fellowship focusing on enhancing social participation of deaf and hard-of-hearing (DHH) children. Eichengreen has been offered a postdoc position at Leiden University as part of the Marie-Sklodowska-Curie “LEaDing Fellows” Project within the collaboration of the Leiden-Delft-Erasmus…

......documentation of the sonic impacts of COVID-19. Many of you have heard the sounds of Wuhan residents chanting “Keep it up, Wuhan!” or Italians singing “Viva la nostra Siena” from their balconies in the evening.

Marcel Cobussen is professor of Auditory Culture at ACPA. Recently he has published a report (in Dutch) commissioned by the city government of Leiden (NL) on the sonic redesigning of a public space (the Garenmarkt) in Leiden. He is also one of the founders of The Journal of Sonic Studies, an Open Access…

It sounds credible: ‘Research has shown that…’, but is it really? Read in the research dossier ‘From data to insight: the importance of sound research methods’ how Leiden University contributes to more reliable social science research.

Leiden biophysicists have found a new possible way to attack cancer cells. They have located ‘sinkholes’ on the cells where receptor proteins disappear from the surface. If a drug could push these proteins towards those areas, it would kill the cancer cell.

Fourteen promising researchers from Leiden University have been given the opportunity to realise their research plans for the coming years thanks to a Veni grant from the NWO. This year, these subsidies have been granted to studies of the influence of noise on the great tit, the conditions necessary…

Do the sounds that surround you as you cycle through the city sometimes annoy you? Don’t worry, because we can actively change the situation, says sound expert Edwin van der Heide. Students in his Honours Class are actively shaping the sound of the city.

The monograph

Herman Berkhoudt (former employee of the IBL, then EEW) organized the course, while Merijn de Bakker and Hans Slabbekoorn spoke about the latest insights in their disciplines.

First author Scott Waitukaitis and principal investigator Martin van Hecke have made the cover of Nature Physics with their publication on a newly discovered effect. The Elastic Leidenfrost effect explains why hydrogel balls jump around on a hot plate making high pitched sounds.

Hans Slabbekoorn, researcher at the Institute of Biology Leiden, is from the 16th to the 26th of July on board of the Pelagia, the Dutch national sea research vessel, which is currently on a collaborative mission for the National Initiative Changing Oceans (NICO). Slabbekoorn will study the effects…

What’s the situation like in France in these times of corona? How do our Leiden alumni cope with the restrictive measures in their country, the possible finding of a vaccine, medication to combat corona or how do they cope with working from home, with or without children? Read the story of Emma…

Energy transition will entail the construction of large numbers of new energy installations. Such construction projects may meet with opposition from people living close by. Assistant Professor Bríd Walsh investigated how the local community can best take part in such projects.

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

It's pretty hard to spot a single 5 nanometer particle. Leiden physicists pulled it off by turning a 120 nm gold rod into a detector.

Michel Orrit was awarded the Physica prize 2016 for his groundbreaking work on single molecule spectroscopy.