An all-optical transistor, a molecule-sized sensor and a new kind of single-photon source for quantum communication. All dreamed applications of fundamental physics that are one step closer thanks to Robert Smit. On 12 June, he defended his PhD thesis with distinction.

Why do innocent people sometimes spend years in prison? EUREX is a registry of miscarriages of justice in Europe that ultimately led to exonerations. The aim is to prevent such mistakes being made in future. One of the initiators is Leiden legal psychologist Linda Geven.

Cognitive decline and anxiety in Parkinson’s disease are often only recognised at a late stage, in spite of their great impact. Research by Marit Ruitenberg focuses on new tests and methods to show up these symptoms earlier and make them more specific.

Lou Boshart won the Excellence in Visual & Multimodal Ethnography Thesis Prize for his film ‘Layers of Confidence’. Lou produced a multimodal thesis about the way rat catchers in New Zealand enact conservation policies and reflect on the ethical challenges of eradicating invasive species. Xiaohui Liu…

Recent studies have shown that Dutch secondary school pupils experience a great deal of stress from school work, and between 2001 and 2007 the number of adolescents experiencing school stress even doubled. The study carried out by Simone Vogelaar focuses on stress factors and the effectiveness of the…

Canal Watch (De Grachtwacht), which has been cleaning canals since 2018, has received the Dutch Research Council (NWO) Communication Initiative Award.

Autism, Alzheimer’s, and bipolar disorder: can the development of these mental health conditions be influenced by the ketogenic diet? Increasingly, research suggests it might. 'For those it helps, it can be life-changing,' says neuroscientist Eline Dekeyster.

Although it can be a challenge at times, parents should keep communicating with their teens. Also about how they parent. Research by developmental psychologist Loes Janssen shows that parenting can be perceived quite differently by family members and mood plays an important role. Parents often parent…

Five consortia within the Perspectief programme that include Leiden researchers have received funding to start their research projects. These projects focus on (further) developing technological innovations, with societal and economic impact at their core.

People who have negative expectations about a treatment actually experience more pain. Merve Karacaoglu discovered in her PhD research that anxious and pessimistic individuals are particularly susceptible to this nocebo effect. However, this sensitivity comes with a silver lining.

Being rejected always hurts, but so does having to reject someone. Social psychologists have discovered that at interviews to select suitable housemates students dehumanise candidates to make it easier to reject them. That may sound harsh but, according to the researchers, it is also logical.

From global warming to the decolonisation of knowledge. At the EuroScience Open Forum (ESOF) in Leiden over 500 speakers from 60 countries have come together to discuss the big themes of our times. Why have the delegates come?

PhD candidate Layla van Wieringen examined how extremist beliefs are passed on within households. In her dissertation ‘Rotten Trees, Bad Apples? Understanding the Intergenerational Transmission of Extremism’, she reveals a reality that media and politics rarely address.

On March 28, 2023, our esteemed colleague Prof. Harry Wijshoff passed away. He died after a struggle of several months against a serious illness.

This year marks the 450th anniversary of the Capture of Brielle by the Watergeuzen (lit. ‘Sea Beggars’) and therefore the birth of the Netherlands. Student Johan Visser is contributing to no fewer than three books about the extraordinary year of 1572.

Leiden University has an active open science community. Open science means transparency in all phases of research by precisely documenting every step of the way and making this publicly available. ‘It’s time to be open,’ say psychologists Anna van ’t Veer and Zsuzsika Sjoerds. There is increasing awareness…

The intake of bachelor’s students from classic immigration countries whose prior education was in the Netherlands does not reflect the growing diversity in society. This is according to data from Statistics Netherlands.

Is it a coincidence that three chemists from the same department have each independently received a ZonMw grant? 'No,' the researchers agree in unison. 'The role of chemistry in medical biology is becoming increasingly important, and we’ve worked hard to make this happen.'

The orbits of 27 stars orbiting closely around the black hole at the center of our Milky Way are very chaotic. As a result, researchers cannot predict with confidence where they will be in about 462 years. ‘That is astonishingly short,’ says astronomer Simon Portegies Zwart who collaborated on the r…

‘Our faculty is a very international community. And that is something everybody really benefit from,’ says Yun Tian. As the officer internationalisation, she is the bridge between international students and staff, the faculty and universities abroad. ‘Science goes beyond countries and carries no nationality.…

Countries that import plastic waste recycle an average of at least 63 percent of it. This is surprising, as we previously believed that the vast majority was incinerated or ended up as litter. This was discovered by PhD candidate Kai Li and his colleagues from the Institute of Environmental Sciences in…

Should Leiden University cut its ties with the fossil fuel industry forthwith? This was the main question in a debate between students and staff. The answer was clearer for some than for others.

Professor of Brain, Safety and Resilience Anne-Laura van Harmelen has been nominated for the Huibregtsen Prize. The winner of the prize will be announced on the Evening of Science & Society (4 October).

Molecular Science & Technology student Renske Donkers has won the second edition of the Young Star Award. During the ceremony on Wednesday 17 February, no less than three teachers were awarded the title 'Teacher of the Year'. Finally, students had a surprise in store for all teachers: with a video they…

When asked about the mission of the Leiden Jewish Studies network, Jürgen Zangenberg, Professor of Ancient Judaism and Early Christianity at Leiden University, and one of the organizers of the event says: “We try to keep the network as broad as possible, and to attract as many people from the outside…

The design for the METIS instrument for the Extremely Large Telescope (ELT) is final. The European Southern Observatory (ESO) has given the green light for production of all parts of the instrument. It is the first ELT instrument, designed and to be built under Dutch leadership, to formally pass the…

Nowadays they can cause the fall of ministers, but once upon a time receipts were a new phenomenon. Associate Professor Robert Stein is to receive a grant from NIAS to map their origins.

While humanities once mainly involved books and archives, nowadays we can’t imagine life without AI. Next semester a new faculty-wide course will be introduced, taking you along with this development. University lecturer and course coordinator Yann Ryan tells us more about it.

When discussing enslavement, attention often focuses on Africans forcibly shipped to South America. Researcher Timo McGregor's new Veni research sheds light on a lesser-known method, whereby indigenous populations were enslaved through the households of colonisers.

Education

Nerve pain is one of the most common side effects of chemotherapy. It is therefore one of the biggest reasons for cancer patients to stop treatment early. Darcy Reynolds worked on new drug candidates against this pain during her bachelor's thesis. She developed a new series of molecules that increase…

How do we account for historical power dynamics when writing new histories of slavery and emancipation? What critical methods can we employ when studying preserved archives and collections? A new book series aims to address these questions. The initiators Karwan Fatah-Black and Ilse Josepha Lazaroms…

Leiden researchers, Professor Remko Offringa and co-applicants Salma Balazadeh and Frederic Lens received an NWO-XL grant (2.5 million euros). Together with researchers in Wageningen and Groningen, they will study the genetic and environmental drivers of woodiness. From plant to molecule, the groups…

Leiden Child Law Department at Leiden University in the Netherlands formally entered into a Memorandum of Understanding (MoU) with the African Child Policy Forum (ACPF)

Joop Schaye, Professor of The formation of galaxies, has been elected as a member of the Royal Netherlands Academy of Arts and Sciences (KNAW). He will be officially inaugurated on 29 September.

There was a time when student Lelani Antar wanted to go to film school. She ended up studying International Studies, yet she didn’t quite say goodbye to film. For her minor, she and three other students made an essay film.

The KNAW has appointed 17 new members, including Leiden University's Vanessa Mak, Professor of Private Law, and Herman Paul, Professor of History. The KNAW has approximately members, who are outstanding scientists and scholars from all disciplines.

Four university medical centres, including the LUMC, are joining forces to increase pandemic preparedness in the Netherlands.

On Thursday May 11, medical anthropologists from Leiden University organized a festive opening of their new network, the Leiden University Medical Anthropology Network (LUMAN). In August 2022, these Leiden-based scholars started gathering and organizing this new network with two main goals, namely to…

How does gender of public leaders relate to employees’ satisfaction with the leadership of their direct supervisor? In the online Leiden Leadership Lunch on Friday September 24, Dr. Max van Lent (Assistant Professor of Economics) presented the results of his recent research on the differences between…

Education

Postdoctoral researcher Veronica Tamorri and a PhD candidate Maia Casna held an online osteoarchaeological class for secondary school children. However, based on reactions, the exchange of ideas seemed to go both ways.

The Faculty Board and the Institute of Private Law have agreed to combine the disciplines of child law, international children’s rights and health law into one Department of Child Law and Health Law.

Museum De Lakenhal is displaying the smallest work of art in the world: a 3D-printed statue of Rembrandt van Rijn, made by sculptor Jeroen Spijker and researchers from Leiden University.

Michael Kowalski has been appointed as part-time Professor by special appointment of Applied Ethics in Intelligence and Security at the Institute of Security and Global Affairs (ISGA) at Leiden University.

Data from 41 million galaxies does not shake up the standard cosmological model after all. To that conclusion, to their own surprise, comes an international team of researchers including Koen Kuijken, professor at the Leiden Observatory.

Jessica den Oudsten won this year’s Uitgeverij Verloren/Johan de Witt thesis award for history with her master’s thesis, entitled "The descendants of Norwegian and Danish Immigrants". The prize was awarded for the eighth time in collaboration with Elsevier Weekblad. The incentive award went to Amber…

Do we break the silences in our research participants’ stories? When is it ethical to write and not write about what remains unspoken in the social worlds we study? And when we encounter silences, how do we document them? These were just some of the many questions discussed during the vivid and inspiring…

If you wish to include Religious Studies expertise in your curriculum (for instance in your thematic seminar(s), elective space, or BA thesis), this new extracurricular course is the thing for you!