937 search results for “electron microscopy” in the Public website
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Leiden Bio Science Park: connecting with the community
For Harry Flore, chair of the LBSP business asociation and CEO at Hal Allergy, the Leiden Bio Science Park (LBSP) has no secrets. But he can well imagine the park is a black box for some staff and students at the university: 'I welcome collaboration on all fronts.'
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Arie Kraaijenoord: ‘I stuck around and I’ve been working here for 33 years now’
Every day, Arie Kraaijenoord (64) can be seen driving around in his little blue van, delivering the mail in and around the Lipsius building. He’s been with campus general services since the post of concierge was first created.
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DNA folded in compliant helix
In an Advance Online Publication biophysicist John van Noort and others show using magnetic tweezers that DNA is folded in compliant helices of chromatin. This allows enzymes access to the DNA needed for gene expression. Van Noort's research group made the discovery in close partnership with researchers…
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This is how physicists use light to build complex structures
Petr Steindl works on quantum dots in microcavities for his PhD research. He manipulates single-photons to create complex structures of light. Applications could include quantum communication and gates for quantum computers.
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Xi’an Jiaotong University Day at Leiden University
16 April was a special day at the Faculty of Science. In honour of the collaborations with the Chinese partner university, it was declared Xi’an Jiaotong University Day.
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Stop wasting energy!
Unplugging equipment that's secretly guzzling electricity, putting the curtains behind the radiator and only using a water-saving showerhead. The students participating in the Student Energy Race are given tips that everyone who cares about the environment and their wallets should learn from.
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Still learning from the Ancient Greeks
There are still things we can learn from the Ancient Greeks. How they managed to make sure that innovations were accepted, for example. A group of classics scholars, led by Leiden, will be carrying out research on this question funded by the largest ever NWO subsidy.
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Artificial Intelligence learns faster with quantum technology
An international collaboration, including Leiden physicist and computer scientist Vedran Dunjko, showed that quantum technology can speed-up the learning process of artificial intelligence (AI). To prove this, the physicists and computer scientists used a quantum processor for single photons. Their…
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Steering the immune system with liposomes
Liposomes – nano-sized spheres composed of fatty molecules – are very promising for vaccination. Bio-pharmaceutical scientist Naomi Benne discovered that the immune response in animal models can be steered by varying the charge of the liposomes. She obtained her PhD degree on 8 September for this research,…
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Artificial Intelligence learns faster with quantum technology
An international collaboration, including Leiden physicist and computer scientist Vedran Dunjko, showed that quantum technology can speed-up the learning process of artificial intelligence (AI). To prove this, the physicists and computer scientists used a quantum processor for single photons. Their…
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Tsinghua and Leiden researchers find that China is crucial for realising a circular economy
A new study on the province level material footprint of China underscores the need to improve resource efficiency in the country, which would be crucial for moving to a circular economy. The research carried out by researchers from Tsinghua University in Beijing, China and Leiden University was published…
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Flentrop organ in Academy Building turns 25: ‘It’s a whole orchestra’
The organ in the Academy Building is 25 years old. University organist Jan Verschuren and tuner Bert Crama talk about the long history of university organs, improvising with short cortèges and their love for this organ.
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Frustrated scientists convince astronomy journal to implement trans inclusive name change policy
A group of united astronomers have successfully convinced Europe’s leading astronomy journal Astronomy & Astrophysics to institute a name change policy for transgender people and others. ‘It’s really frustrating that such a large organisation needed an initiative from outside to adopt a more inclusive…
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Chinese exchange professors meet Faculty of Science
Two professors from China joining the research and education in Leiden, two Leiden professors going to China to share their knowledge and experiences in return. This is the exchange professorship between the Faculty of Science and Xi'an Jiaotong University (XJTU). This week, all four professors got…
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Online access to medieval manuscripts improved
Do you frequently search the catalogue of Leiden University Libraries (UBL) for western medieval manuscripts? Then you must have noticed important changes lately. Some 1800 summary catalogue records in Dutch were replaced by more elaborate descriptions in English. Furthermore, the catalogue interface…
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Working and growing in science
'We must set out an agenda, in partnership, to manufacture our own means. This will stimulate science, small businesses, jobs and society in Africa and beyond.' With these words Naledi Pandor opened the symposium 'Science Diplomacy and International Development', which was held in her honour on 27 Februari…
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Leiden involved in global science communication study
Launched in early March, GlobalSCAPE is an EU-funded project seeking to understand the current state of science communication globally, especially in non-western countries. Through the Department of Science Communication & Society, Leiden University is one of the main partners of the project, which…
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Physics in the picture: cancer cells as an explosion of fireworks
When you think of physics, do you think only of complicated formulas? You’re not the only one. Therefore, every year, the Leiden Insitute of Physics organises the LION Image Award to show another side of physics: beautiful images about intriguing science. The winner of the 2022 photo competition captured…
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Looking at the big world of microbiology through the smallest lenses
Antoni van Leeuwenhoek, the father of microbiology, died 300 years ago. 2023 has therefore been designated the Antoni van Leeuwenhoek year. The new Unimaginable exhibition in Rijksmuseum Boerhaave is about the amazing world that Van Leeuwenhoek made visible. What was so special about the way he worked?…
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Ten years ERC: Sylvestre Bonnet kills cancer with light
In 2013, Sylvestre Bonnet received an ERC Starting Grant to kill cancer with molecules that can be activated by light. Two postdocs and three PhD students later, the end approaches of his so far successful project.
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‘The disaster in Japan may turn out to be a turning point’
‘There is no such thing as a timeless Japanese soul,’ says newly appointed Professor in Modern Japan Studies Katarzyna Cwiertka. The first month of her professorship turned out to be a crucial test: Japan was hit by a destructive earthquake and tsunami, and Cwiertka had to keep her head in the midst…
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Clashing galaxy clusters and extreme energies
A galaxy is already incredibly large, but it can get even bigger. Astronomer Reinout van Weeren investigates clusters of galaxies, one of the largest structures in the universe. For his research into the origins and evolution of these clusters, he obtained an ERC Starting Grant of 1.5 million euros.…
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Assessing total environmental impact is becoming even more important
Life cycle assessment (LCA) reveals the total environmental impact of products or production processes, and EU rules are going to make this even more important.
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Breakthrough artificial photosynthesis comes closer
Imagine we could do what green plants can do: photosynthesis. Then we could satisfy our enormous energy needs with deep-green hydrogen and climate-neutral biodiesel. Scientists have been working on this for decades. Chemist Chengyu Liu will receive his doctorate on 8 June for yet another step that brings…
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Century-old electrochemistry law gets update
The Gouy-Chapman theory describes what happens near an electrode when it is in contact with a salt solution, but this description does not match reality. Researcher Kasinath Ojha, assistant professor Katharina Doblhoff-Dier and professor Marc Koper present a new version. ‘The next generation of textbooks…
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'When I talked about the materials for an energy transition in 2010, people almost started to laugh'
In order to build wind turbines and electric cars, we need tons of magnets. Currently, we import these mainly from China, which means Europe is very dependent on this superpower for the energy transition. This has to change, according to industrial ecologist René Kleijn. In the REEsilience project,…
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Why we always choose the same songs for the Top 2000
As the year draws to a close, many music lovers are looking forward to the Top 2000. How high is their favourite song and who is number one? But the list is often very predictable and the same songs are always in the top 10. According to neuropsychologist and associate professor Rebecca Schaefer, it’s…
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New perspective in quantum mechanics and better sleep for PhD students
Besides physics, the sleep of PhD students also benefits from Vitaly Fedoseev's PhD research. He will receive his doctorate on July 7 for his work on optomechanics within quantum mechanics. And also on a setup that eliminated the need for PhD students to push a button every hour for 72 hours.
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Algorithms can also learn without examples
In donut-shaped buildings, particle accelerators take super-detailed X-ray images. Yet those images are not good enough to learn how to drive on hydrogen for example. Mathematics PhD student Allard Hendriksen has developed an algorithm that improves the images without having to learn from data from…
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Leiden biologists find nanoplastics in developing heart
Nanoplastics can accumulate in developing hearts, according to a study by biologist Meiru Wang from Leiden University. Her research on chicken embryos sheds new light on how these tiny plastic particles pose a threat to our health.
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A fulltime job and a ten for your master’s thesis: ‘I thought they were joking’
After working full-time for twenty-four years, Wendy Tonks decided to enrol in the executive master's in Cyber Security. She now proudly reflects on her time in the programme after receiving a ten for her thesis and graduating summa cum laude. ‘I could not believe it when I got my grade.’
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How to make an old antibiotic a hundred times more potent
Nathaniel Martin, Professor of Biological chemistry, wondered what would happen if you take an antibiotic that has been known for 70 years and try to improve it with the latest tools of modern chemistry. Turns out it can become up to a hundred times more potent and prevent the growth of some drug-resistant…
- SAILS Lunch Time Seminar: 21 June
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Van Marum Colloquium - Pioneering techniques to probe the solid-liquid interface using the soft X-rays of the VerSoX beamline at Diamond Light
Lecture
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The Independence of National Regulatory Agencies
Lecture
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Peel Slowly and See
Festival
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Van Marum Colloquium: Catalyst Design at Extremely Small Sizes: From CO2 Reduction to Ammonia Production
Lecture
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Evolution and development of orchid flowers and fruits
PhD defence
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Gabriel Paiuk – Sound Theory (The Clouds)
Arts and culture, Concert
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Panel discussion: Silencing Palestine
Panelbijeenkomst
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LIC Lecture: 3D Domain Swapping of Proteins: Basics and Recent Developments
Lecture
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Spin Transport and Superconductivity in Half-metallic Nanowires and Junctions
PhD defence
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Singing themes: Christmas Carols
Arts and leisure
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Six questions about the British referendum and a possible Brexit
The shocking murder of MP Jo Cox has brought it home to the British public that the referendum debate is in disarray. How has the campaign been handled and what would be the consequences of a Brexit? Jan Rood, Professor by special appointment of European Integration, and political scientist Hans Vollaard…
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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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Fighting cancer with light (and a drug that self-assembles into nanoparticles)
Chemotherapy that does not harm the body, but effectively fights cancer cells: that is the goal of chemist Sylvestre Bonnet and his team. During his PhD research, chemist Xuequan Zhou brought that goal a little closer. He developed molecules that, upon injection in the bloodstream, self-assemble into…
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Change manager Frans de Haas is working on the future of the MI
Frans de Haas started his work at the MI with a clear mandate. Listening and talking are what he will mainly be doing ‘My role is to make sure that everyone feels comfortable in the new situation.’
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LION in lockdown
The 'Intelligent Lockdown' has lasted over a month now, which makes experimental physics research hard to do, if not downright impossible. Even so, work is continuing. Five Leiden physicists tell us about it.
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In memoriam Harold V.J. Linnartz 1965 – 2023: Unlocking the Chemistry of the Heavens
With great sadness we share the news that Prof. Harold Linnartz passed away suddenly and unexpectedly on Sunday 31 December 2023. We are all in shock, and our thoughts are with his wife and children, other family, and friends. Harold was at the heart of our institute, as a researcher, as a supervisor,…
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‘Cancer treatment should be a six-week life event’
When internist Christian Blank made his very first discovery, his field of immunotherapy was the underdog of cancer research. Now, over 20 years later, Blank has been appointed Professor By Special Appointment of Internal Medicine for his clinical research into immunotherapy and will give his inaugural…