486 search results for “dark matter” in the Public website
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A piece of rubber can't count. Right?
Martin van Hecke and Lennard Kwakernaak (Leiden university and AMOLF) develop a mechanical metamterial that can count to ten in their research.
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A quirky block of rubber as a calculator
PhD candidate Jiangnan Ding explores how you can design a thick slab of rubber in a way that it might act as a mechanical computer bit. This so-called mechanical metamaterial is pushed in a specific way to change its shape. ‘With a very simple material, we might be able to do simple calculations in…
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New spinoff company to solve major roadblock in the quantum revolution
Physicist Kaveh Lahabi’s research on quantum materials led to the launch of a new company: QuantaMap. With his colleagues, he developed a sensor that will improve the production of quantum computer chips. ‘It turns out that what I need for my fundamental physics research is also very useful for the…
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This is how physicists contribute to the energy transition
Studying surfaces of solid materials: it may not seem relevant to energy consumption, but it is. Marcel Rost studies how platinum electrodes wear out. Those electrodes are a crucial component in the fuel cells of hydrogen-powered cars. ‘We need to make the switch from fossil fuel energy to hydrogen.…
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Corrugated plastic unveils a new design principle for programmable materials
Martin van Hecke en Anne Meeussen publiceren in het tijdschrift Nature over mechanische metamaterialen. Ze hebben een nieuwe klasse multistabiele materialen ontdekt. Dit is gebaseerd op ribbeltjes plastic.
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Complex Organic Molecules Discovered in Infant Star System
For the first time, astronomers have detected the presence of complex organic molecules, the building blocks of life, in a protoplanetary disc surrounding a young star. The discovery reaffirms that the conditions that spawned the Earth and Sun are not unique in the Universe. The results are published…
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Astronomers capture first image of a black hole
For the first time, astronomers have managed to take a photo of a supermassive black hole and its shadow. They used the Event Horizon Telescope (EHT), a worldwide network of eight radio telescopes that together form a virtual telescope the size of the earth. The news was presented in six press conferences…
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First detailed picture of ice in planet-forming disk
An international team of astronomers led by Ardjan Sturm of the Observatory has made the first two-dimensional inventory of ice in a planet-forming disk of dust and gas surrounding a young star. The researches, including Melissa McClure, used the James Webb Space Telescope and publish their findings…
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Pitfalls of discretionary conduct
Judicial officers have some leeway in how they act. In most cases that's fine, but it can also lead to abuses, such as ethnic profiling. It is easy to forget that these are not isolated decisions, but are also part of a framework of formal policies. Professor Maartje van der Woude calls for more comprehensive…
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‘All of Leiden will join in with the Seeing Stars experiment’
What will happen if the lights in a large part of the city are switched off? How many stars can you see without all that light pollution? This is what researchers, artists and the residents of Leiden are going to investigate during Seeing Stars Leiden on 25 September. ‘Leiden is the ideal place for…
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Lights out, stars on: Daan Roosegaarde on Seeing Stars Leiden
‘What if we switch off all the lights one evening? That idea crossed my mind from time to time. And when I mentioned it to a taxi driver one day, he said: “Oh, you mean: lights out, stars on!” That’s not completely true, of course, because the stars are always on, but his phrase summed up the idea n…
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Astronomer Danna Qasim wins two prizes for dissertation on methane ice
Former Leiden Observatory PhD candidate Danna Qasim has won no less than two prestigious prizes with her thesis, titled 'Dark ice chemistry in interstellar clouds'. Qasim received the IAU PhD Prize from the IAU. The Astrochemistry Subdivision of the American Chemical Society (ACS) honoured her work…
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Thierry Rohmer received Ernst Award for elucidating the light-switch of plants
PhD student Thierry Rohmer received the Ernst Award 2009 of the Gesellschaft Deutscher Chemiker (GDCh) for his publication in the Proceedings of the National Academy of Science of the USA on the structure-function relation of the photoreceptor phytochrome. The prize was presented at the Annual Discussion…
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New research centre for studying planet and star formation
The ALMA Local Expertise Group (Allegro) is located in the Leiden Observatory (Sterrewacht). Professor Ewine van Dishoeck: ‘The Netherlands has played an important role in establishing ALMA. Thanks to this subsidy, we can now reap the scientific benefits.'
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Ewine van Dishoeck interviews minister Dijkgraaf - Astronomy celebrates 60 years of ESO
With a special symposium at Museum Boerhaave, ESO celebrated its 60th anniversary on Monday, 26 September. More than 100 scientists, politicians and people from industry were present to look back on collaborations, milestones and discoveries. Leiden astrochemist Ewine van Dishoeck was one of the pre…
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Is lack of sleep bad for study performance?
The Netherlands Association for Sleep-Wake Research is studying this issue. Lead researcher Kristiaan van der Heijden, Leiden psychologist and sleep specialist, invites students to take part in the study.
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Solar telescope officially unveiled in Old Observatory
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.
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Mazène Hochane and Xueying Fan win LION Image Award 2018
Mazène Hochane and Xueying Fan have won the fourth annual LION Image Award. They created a detailed colour image of a human kidney in development.
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Online exhibition
TEXTS FROM ANCIENT EGYPT. Highlights from the Collection of the Leiden Papyrological Institute. Online exhibition on the occasion of the 80th anniversary of the foundation ‘Het Leids Papyrologisch Instituut’ in 2015.
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Doctors and citizens under fire in conflict zones
It is time for the international community to put a stop to war crimes – especially against medical personnel, argued international chair of Doctors Without Borders Joanne Liu in her Cleveringa lecture.
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Material Culture, Consumption and Social Change
New Approaches to Understanding the Eastern Mediterranean during Byzantine and Ottoman Times
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Portrait series Keti Koti
In personal stories, university staff and students with different backgrounds reflect on our colonial and slavery past. How does this history affect the present and the future?
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Leiden astronomers launch biggest space-ice database ever: ‘A kind of phone book, but for ice’
It is the largest database for space ice yet: The Leiden Ice Database for Astrochemistry: LIDA. Created by astrophysicists at the Leiden Observatory, LIDA includes not only hundreds of measurement data, but also software to examine astronomical observations and prepare new measurements with the James…
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A thousand participants in Dies for alumni
The Dies Natalis for alumni on 11 February was an online event. Almost 1,000 alumni tuned in to Bastiaan Rijpkema’s interview with Annetje Ottow, who had then been President of Leiden University’s Executive Board for all of three days. Alumni are part of her portfolio on the Executive Board.
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Webb data suggest potential atmosphere around rocky exoplanet
Researchers using NASA’s James Webb Space Telescope may have detected atmospheric gases surrounding 55 Cancri e, a hot rocky exoplanet 41 light-years from Earth. This is the best evidence to date for the existence of any rocky planet atmosphere outside our solar system.
- Night of Discoveries
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After us the deluge: exhibition portrays the end of humanity
From a catastrophic fire to a flood that engulfs the earth. Mineke Schipper, Professor Emeritus of Literary Studies, has collected myths from the four corners of the earth about the end of humanity. These have inspired 30 striking paintings by Japanese artist Yuriko Yamaguchi. The Dutch premiere of…
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Neurodiversity Platform: creating an inclusive workplace
The new Neurodiversity Platform supports staff who need better working conditions because they have ADHD or autism, for instance. Stefan de Jong, who is organising the Platform’s first online meeting on 15 November, tells us about the initiative. Register now if you’re interested.
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Visit the Leiden preliminary heat of FameLab
Which two Leiden scientists will present their research in the most compelling way in three minutes? It could be those with the most supporters. The Leiden preliminary heat of FameLab is taking place on 14 February. Sign up now to be in the audience!
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ERC Consolidator Grants for four Leiden researchers
From fake news via WhatsApp to mini hearts from a 3D printer: four Leiden researchers have been awarded a Consolidator Grant by the European Research Council. These grants, of up to 2m euros, enable researchers to establish or expand their research team and continue to develop their career.
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Celestial worlds and comet hysteria in Van Dishoeck exhibition
A moon rock from the Apollo 17 mission, antique globes and the cosmos according to Wassily Kandinsky. Ewine van Dishoeck, Professor of Molecular Astrophysics, has put together an impressive exhibition at Rijksmuseum Boerhaave.
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We finally understand how oxygen reacts on platinum
Platinum is a widely used catalyst, but its precise mechanism largely remains a mystery to scientists. Ludo Juurlink has now demonstrated for the first time how oxygen reacts on the platinum surface. Together with PhD students Kun Cao and Richard van Lent and international colleagues he publishes his…
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Four reasons to visit the Night of Art & Sciences
On 16 September, the Rapenburg canal will be the setting for the Night of Art & Sciences. There will be plenty of things to do, including for international students and staff. We have selected four great acts in advance.
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Cosmic recipe discovered for making glycerol
A team of laboratory astrophysicists from Leiden University managed to make glycerol under conditions comparable to those in dark interstellar clouds. They allowed carbon monoxide ice to react with hydrogen atoms at minus 250 degrees Celsius. The researchers publish their findings in the Astrophysical…
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Zware metalen hebben slechte reputatie, maar genezen ook kanker
Veel mensen denken dat zware metalen giftig zijn en mens en natuur altijd schade aanbrengen. Dat beeld moet genuanceerd worden, vindt hoogleraar Sylvestre Bonnet.
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Superconductivity with a twist explained
Leiden physicists and international colleagues from Geneva and Barcelona have confirmed the mechanism that makes magic-angle graphene superconducting. This is a key step in elucidating high-temperature superconductivity, a decades-old mystery central to physics, which may lead to technological break…
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Astronomers destroy former record for most distant galaxy
An international team of astronomers that includes researchers from Leiden has discovered the most distant galaxy yet. The galaxy, called EGS8p7, is 13.23 billion light years away from Earth and already existed when the universe was only 550 million years old.
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Summer exhibition in the Old Library: artworks by colleagues
Silver jewellery, sculptures made of cork and intriguing photos of psychiatrists' treatment rooms. Staff at Leiden University exhibit their artworks in the Old Library. The summer exhibition can be viewed until 12 August.
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Single Molecule Detected for Use in Quantum Network
Leiden physicists have managed to detect a single molecule called dibenzoterrylene in a new crystal, and found that it is a candidate component for a quantum network. Future quantum computers will need such a network to work together while maintaining their advantages. Publication in ChemPhysChem jo…
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The early Middle Ages a ‘golden age for the elderly’? Not quite!
According to a number of British historians, the elderly had a particularly high status in the early Middle Ages. A new book by Leiden cultural historian Thijs Porck sheds a different light on the matter: elderly people had to earn that respect first, and old age was often described in negative terms…
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Artwork in the new Gorlaeus Building: ‘Academics and artists have more in common than we think’
Leiden artist Jos Agasi gets to create the artwork for the atrium of the new Gorlaeus Building. His work was chosen from several entries and will be a real eye-catcher in the building. The artist has a fascination for light and uses it to create works of art with all kinds of materials, objects and…
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How light and noise pollution disrupt aquatic life
Fish populations in lakes and rivers have declined in recent decades. This is probably due to light and noise pollution. The Horizon Europe grant enables ecologist Hans Slabbekoorn to investigate this and improve the situation for migrating fish. In order to do so, a seven-metre-long swimming tunnel…
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Leiden project wins international astronomy engagement award
The online summer programme Space in Your Living Room by Leiden Observatory has won the first prize ‘Most Innovative Event’ of the Astronomy@Home Awards from the International Astronomical Union. In July and August 2020, participants could for example talk to real astronauts and imagine life forms in…
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Medieval women better dressed than men
Women in the Middle Ages often wore better quality clothes than men. This is one of the conclusions drawn by Leiden archaeologist Chrystel Brandenburgh, who studied textile remnants from the period from 400 to 1000 A.D. PhD defence 10 May.
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My favourite spot: one for the coffee lovers
'This one is really for the coffee lovers out there, but tea drinkers and co. need not tune out because this spot has got more to offer than just coffee.' Rachel Quennell, student of International Studies in The Hague, is a mine of information for lovers of good coffee.
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Bacteria without cell wall gobble up DNA from environment
A bacterium hiding from the immune system and picking up bits of DNA from its environment. The result: gaining new traits, such as better protection against antibiotics. Fortunately, we have not found such a damning scenario yet. However, PhD student Renée Kapteijn did find the first clues, which…
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Royal decoration for Jo Hermans and Jan Schmidt
Two of our colleagues received a royal decoration. Professor Jo Hermans became “Ridder in de Orde van Oranje Nassau”, and Professor Jan Schmidt became “Officier in de Orde van Oranje Nassau”. They receive the decoration as an acknowledgement for their extraordinary and selfless contribution to others…
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'One of the most connecting experiences I have had online'
Poetry, video editing, musical art: the first installment of the 48 Hour Project, in which students created a piece of art in only two days, has resulted in a wide variety of creativity. For participants, it was a glimmer of light in a rather dark year of lockdowns: “I felt like I was physically there with…
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Science & Cinema: Leiden researchers at the Leiden International Film Festival
A film and quiz at the Old Observatory, a film whose ending you decide or a political satire in The Hague. These are some of the options at Science & Cinema, the 444 edition, a special programme during LIFF, the Leiden International Film Festival.
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Seven Leiden researchers win €1.5m Vici grant
Seven Leiden researchers have each been awarded a Vici grant by the Netherlands Organisation for Scientific Research (NWO). This will enable them to form a research group and develop their own innovative line of research.