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.

Following in the footsteps of Professor Jan Zaanen, visiting fellow Louk Rademaker is exploring quantum effects in so-called strange materials. His research is paving the way for new materials that could be used in emerging technologies.

The ‘Stans Prize 2015' (for the best thesis, report or article produced by a CML student) has been awarded to Kevin Groen. Other CML prizes were awarded to Laura Bertola, Patrik Henriksson and Rene Kleijn.

As of January 2022, Ivo van Vulpen has been Professor by Special Appointment of Science Communication at the Leiden Institute of Physics (LION). Van Vulpen will be researching science communication in general and will aim to underline the value and importance of science communication.

The European Research Council has awarded ERC Consolidator Grants to four researchers from Leiden. These grants of up to 2m euros will enable them to continue and expand their research.

A delegation from Leiden University is visiting Brazil from 14 to 18 March. The first day of the visit was spent with scientists in São Paolo.

The Casimir Research School and the Graduate School Experimental Plant Sciences will be participating in the first Graduate Programme. This was announced on Wednesday 12 August by Minister Plasterk (Ministry of Education, Culture and Science). Leiden University is a partner in both schools. Nine Dutch…

Christopher Berg Smiet, who defended his thesis at LION with Dirk Bouwmeester, won the Christiaan Huygens prize for his thesis '‘Knots in Plasma’. On 7 October, he received a certificate, a bronze statuette and ten thousand euros.

Theoretical physicist Luca Giomi receives a 2 million euro ERC Consolidator Grant for research into flowing cells in a strange hexatic phase, which is half fluid, half solid.

Since 1 October, Sabina Chiță has been working as a coach for first-generation students in Physics. But who are first-generation students, and why might they need a coach? Six questions to Sabina Chiță.

Smooth platinum electrodes roughen and wear when subjected to repeated cycles of oxidation and reduction, which causes nanometer-scale mounds to grow. Leiden chemists Leon Jacobse and Marc Koper, together with physicist Marcel Rost, discovered the exact details, using a unique tunneling microscope.

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.

Scientific research at the molecular level on a collection of medieval skeletons from Norton Priory in Cheshire, United Kingdom, could help rewrite history after revealing they were affected by an unusual ancient form of the bone disorder, Paget’s disease. Osteoarchaeologist Carla Burrell, attached…

Professor Henk te Velde started as interim dean of the Faculty of Humanities on 1 March. Mark Rutgers' successor is faced with the task of getting the faculty back to financial health.

Rapid developments in DNA techniques allow researchers to find out more and more about human genetics. An international group of scientists has drawn up five ethical guidelines to ensure that this DNA research is better regulated. Leiden archaeologist Marie Soressi – one of the signatories - explains…

Two graves dating from the 7th century have been discovered during an archaeological excavation in Leiden. One of the graves was found by a student of Archaeology during the first-year fieldwork project that took place at the same time as the excavation. The well-preserved graves are interesting because…

There is no such thing as the quintessential cybercriminal. It can be a Russian gang or the boy next door. What we do know is that cybercrime is an enduring societal problem that can affect every one of us. ‘We do not know enough about the criminals’, says Professor of Governing Cybercrime Rutger Le…

It was long thought that the early development of Japanese children's books served mainly as a propaganda tool of the state: the literature was supposed to have been written to shape children into perfect citizens. PhD student Aafke van Ewijk nuances this image. Children's book writers wanted to have…

With the retirement of Wil Roebroeks, Gerrit Dusseldorp will take his place as the archaeological representative in the Liveable Planet Interdisciplinary Programme as an Associate Professor. An expert on the behaviour of early human hunter-gatherers, he will look at the interaction between humans and…

Indigenous philosophies have been ignored for too long. This prompted Osiris González Romero to study the wisdom of the Nahua in Mexico. Their philosophy has an important message for the consumption society: see the earth and nature as living beings and not just as resources. PhD defence 22 June.

Rembrandt van Rijn was enrolled as a student of the arts at Leiden University, but he was more interested in becoming a painter. What traces now remain of this famous phantom student?

The European Research Council has awarded a Starting Grant to five early career scientists from Leiden University. They received funding up to 1.5 million euros to further expand on their research subject.

Hydropower plants need not be disastrous for fishermen and nature. For that, we need to place new dams more strategically, but also modify or even remove some existing ones. Valerio Barbarossa and Rafael Schmitt showed that with a computer model of the Asian Mekong basin.

Fifteen hundred years ago, the north-west of what we now call China was a jumble of peoples. How did those Indians, Khotanese and Tocharians influence each other and each other's languages? Associate professor Michaël Peyrot has been awarded an ERC grant of almost two million euros to unravel this 'web…

Forest degradation has limited the Orang Rimba's access to forest resources. As a result, they've had to make significant cultural modifications and adaptations. Ekoningtyas Margu Wardani explains in her PhD dissertation these transformation processes among Contemporary Indonesian Hunter-Gatherers through…

On the south coast of Sri Lanka is a colonial fort. Since it became a world heritage site, the fortified town of Galle has suddenly become a major tourist attraction. This has its pros and cons, says PhD candidate Uditha Jinadasa. PhD defence on 12 March.

The rights of children born through international commercial surrogacy are at risk of being overlooked or even violated. Lawmakers, judges and commissioning parents should be more aware of this and take protective action throughout the surrogacy procedure. This is the conclusion reached by lawyer and…

Humans have influenced nature since as early as the Ice Age, and over the past century man’s impact has become even greater with our many new technologies and a growing world population. Leiden researchers study this impact and how we can keep it within reasonable limits so that nature can be preserved.…

Egyptian temple culture was thought to be declining in the Ptolemaic era, after the death of Alexander the Great in 323 BC. Nothing could be further from the truth, says Egyptologist Carina van den Hoven. Temple culture was very much alive and kicking. PhD defence 16 February.

More than fifty researchers are working together to describe the colonisation of the Americas from the Amerindian perspective. In November they will be meeting for the first time, in Leiden. How is Corinne Hofman, Leiden Professor of Archaeology managing the international megaproject Nexus 1492?

On Thursday 14 October, Dr Martine van Ittersum gave the first lecture of the Van Vollenhoven Institute’s year-long workshop 'Reconsidering the Socio-Legal Gaze'. Attended by over 40 people, her lecture, entitled 'Van Vollenhoven and Grotius: Soulmates in Empire' examined Grotius’ influence on Cornelis…

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.

The Leiden Institute of Physics hosted the annual conference of the Dutch Vacuum Society (NEVAC). Experts in the field of vacuum experiments talked about their research. The 2016 NEVAC Prize was awarded to PhD student Martijn Vos from the TU Eindhoven.

Individual molecules are extremely hard to see through feeble fluorescence. Tiny gold nanorods serve as new antennas to intensify their signal 500 times. Publication on 24 February in Angewandte Chemie.

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.

On 29 April a live viewing event was held on the Spanish Stairs at the Wijnhaven building in The Hague broadcasting the ‘Spitzenkandidaten’ debate held at the Theatre at the Vrijthof in Maastricht. The debate between the lead candidates of the European political parties for the presidency elections…

The image of the Leiden microboat traveled all over the world, from the BBC up to Arab shipping blogs. But Daniela Kraft's research group has quite a few more different 3D printed microswimmers up their sleeves. Kraft receives a Vidi research grant for research into these variously shaped active par…

Het asielbeleid blijft een hoofdpijndossier voor het kabinet. Een akkoord zou bereikt zijn waarin iedere partij een kleine concessie zou doen. De VVD gaat uiteindelijk toch niet akkoord met deze nieuwe asielwet die gemeentes kan dwingen om asielzoekers op te vangen. De VVD fractie heeft moeite met ‘dwang’…

Leiden biophysicist Stefano Coppola has received the prestigious AXA Research Fund postdoctoral fellowship. With this grant he can work for two years on a project to research the role of mechanical factors in the development of pancreatic cancer.

There have been indications for decades that there is a link between increased iron levels in the brain and Alzheimer’s disease. Leiden physicists find this connection as well, thereby now making a distinction between different forms of iron. They identify specific iron forms that increase in Alzheimer’s…

Genes are active sometimes, and other times they remain dormant for a while. Leiden physicist John van Noort receives an NWO ECHO grant to find out how this happens.

STM scanning experiments on poorly conducting materials are challenging, and can cause a distortion effect. A new model corrects for this effect, allowing physicists to better study materials in their quest to understand unconventional superconductivity. Publication in Physical Review B as Editor’s…

This event is in Dutch. 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…

Physicists have studied the astrophysical neutrino signal as reported by the IceCube collaboration from a different angle with their ANTARES detector. The Milky Way centre was an obvious prime suspect to be a source, but this hypothesis is now only closer to debunked than confirmed. Publication in Physical…

A new computer simulation shows the promising possibilities of the booming field of topology. Smartly designed mechanical structures carry sound exclusively one way and are immune to fabrication errors. Publication on 17 July in Nature Physics.

Leiden University has appointed John van Noort as Professor in Biophysics. He studies the way in which our DNA is folded and read out.

Scientists have detected a neutrino with the highest energy ever measured. Leiden physicists Maarten de Jong and Dorothea Samtleben were involved in this project, which was widely covered in newspapers and online media last week.

In their quest for materials that conduct electricity without resistance at moderate temperatures, scientists usually work on their chemical make-up. Now Leiden physicists have come up with a radically new approach: pinching holes in a periodic pattern. Publication in SciPost.

Nematic liquid crystals form the key ingredients of most tv screens. The active version of these complex fluids forms a useful model for physicists to research the responses of active matter—like bacteria or traffic flows—to mechanical and geometrical cues. An international research team publishes their…

Leiden physicist Maarten Kruithof has discovered how our DNA is infallibly able to fold itself and to unfold again. In his dissertation he demonstrates how DNA is folded in a single long, very flexible spiral.