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

We are happy to announce the 4th annual LION Image Award!

We are happy to announce the 3rd annual LION Image Award!

Lecture

How do you microscopically image zebrafish larvae? The new free online course ‘Imaging the Vertebrate embryo’ teaches you all about it. Leiden PhD candidates Salomé Muñoz Sánchez and Radoslaw Gora contributed to the course.

2020 was an eventful year. You can see that in our photos: one and a half metres distance, an empty university, attending ceremonies online and working from home. The image editors have selected the twelve most eye-catching photos of the past year..

Finally, it's high time for the yearly LION Image award. Send us your most impressive, beautiful or insightful physics image, and win eternal fame on top of 100 euros, and a year long exhibition on the LION picture wall.

The winning picture by Sander Blok in the annual Physics Image Award has made it to Leidsch Dagblad. The runner-up image by Jelmer Wagenaar has been selected as Beeld van de Week in De Volkskrant.

PhD defence

A single self-assembled semiconductor quantum dot in a high-finesse optical microcavity - the subject of this thesis - is an interesting quantum-mechanical system for future quantum applications. For instance, this system allows trapping of an extra electron and thus can serve as a spin quantum memory,…

Lecture, Research Seminar

Learning from small data sets in machine learning is a crucial challenge, especially when dealing with data imbalances and anomaly detection. This thesis delves into the challenges and methodologies of learning from small datasets in machine learning, with a particular focus on addressing data imbalances…

How you think about yourself is important for the choices you make. Adolescents are faced with choosing a study programme that will determine their future, while their self-image is still under development. Tough choice? Research by psychologist Laura van der Aar has shown that taking a training course…

High-temperature superconductivity is one of the big mysteries in physics. Milan Allan’s research group used a Josephson Scanning Tunneling Microscope to image spatial variations of superconducting particles for the first time, and published about it in the journal Nature.

To be able to measure small forces or small deviations from Boltzmann, the external vibrations at the resonance frequency must be very low. To achieve this, we have developed a very soft vibration isolation system and combine it with several other measures to reduce vibrations in our dilution refrigerators.…

Research groups in the Biological & Soft Matter Programme unravel mechanisms in biological processes and develop novel bio-inspired soft materials.

PhD defence

PhD defence

Over a seven year period an international team of scientists has mapped more than a quarter of the northern sky using the Low Frequency Array (LOFAR), a pan-European radio telescope. From Leiden, Astronomer Timothy Shimwell and Huub Röttgering, among others, are involved. It reveals an astonishingly…

Lecture

LUMC researcher Marius Staring will receive a $ 200,000 grant from the Chan Zuckerberg Initiative to improve the accessibility, interoperability and efficiency of the Elastix imaging software. This will give the popular 2003 software package a much-needed new impulse.

The 'deepest and sharpest' image of the Universe to date: the first photos from the new James Webb space telescope yesterday mesmerised astronomers and the public alike. Leiden Professor of Molecular Astrophysics, Ewine van Dishoeck, spoke to various media outlets about the first images, which include…

Laura van der Aar talks about the role of self-image in making decisions for future education. In her research, Laura investigated the importance of paying attention to the development of self-image, and how this can better support teenagers in their study choice.

We investigate how radiation pressure can be used to influence the mechanical motion of a micro-mirror suspended from springs.

How do bacteria sense and adapt to their environment? Ariane Briegel, Professor of Ultrastructural Biology, is intrigued by this question. Using new techniques, she produces three-dimensional images of bacteria that provide us with new clues about their sensory system.

Promotor: B. van de Water

Sander Blok has won the third edition of the annual LION Image Award. He created a colorful image of gold nanoparticles with a low-energy electron microscope.

A plasma is an ionized gas with very low electrical resistivity. As such, magnetic field lines are 'frozen in' and move with the fluid. Magnetic field lines that are linked, knotted and tangled, cannot be undone by the fluid motions.

Leiden University and VU Amsterdam are developing a joint research project for a digital platform on which you can compose and share storylines with the use of images. Such interactivity will make a boring high school history lesson much more exciting and personalized. Furthermore, it will stimulate…

Pulsars were first discovered in 1967 and since then the population has grown and expanded over several wavelengths.

In this work, we investigate the minute circular dichroism effects of single nanoparticles.To this aim, we apply photothermal imaging with a polarization-modulated heating beam.

Martina Huber, Jacqueline Labra Munoz research Alzheimer's disease. They study ferritine, iron storage in the brain. An inbalance of iron could play a role in this form of dementia.

The long term goal of the Biophysical Organic Chemistry/SSNMR group, headed by Prof. Huub de Groot, is to reach an understanding of structure, dynamics and functional mechanisms of membrane proteins and self-organized biological assemblies and to translate this knowledge into new concepts for nano-devices,…

Serge Rombouts is a physicist whose PhD thesis was about functional MRI (fMRI). This visualises activity in regions of the brain. The appealing images of glowing brain regions that emerge from the computer are the result of calculations. According to Rombouts, this isn’t proper artificial intelligence.…

‘I would never want to be treated by a computer,’ says Boudewijn Lelieveldt, Head of Radiology at the Laboratory for Clinical and Experimental Image Processing and Medical Delta professor in the Bioinformatics group at Delft University of Technology. No matter how intelligent a system, we have to continue…

Metabolomicshas emerged as an important discipline to study molecular and cellular processes in living cells and organisms with the ultimate aim to obtain an answer to a given biological/clinical question.

Is it possible to pharmacologically condition oxytocin responses in healthy individuals and identify the neural circuitry underlying such conditioning?

Promotor: H.J.M. de Groot

Chemical biology research at the Leiden Institute of Chemistry is aimed at understanding biological processes at the molecular level to strengthen the knowledge base of human health and disease. The approach to achieve this goal is a fundamental chemical one; with the aid of chemical probes biological…

The master’s specialisation Research in Physics, Quantum Matter and Optics at Leiden University offers a thorough experience on the front line of physics research with a practical training of communicative and computer skills. The programme focuses on Condensed Matter problems, such as Molecular Electronics,…

Are you interested in taking up an extra challenge during your master’s programme?

Are you interested in taking up an extra challenge during your master’s programme?

Surface plasmons (SPs) are surface waves at the interface between a dielectric and a good metal, and are formed by the interaction between light and the free electrons at the metal-dielectric interface. They provide strong field confinement for optical fields, opening new possibilities for enhanced…

This weeks marks the 10th anniversary of the European Research Council. For the past decade, the council has contributed to many scientific projects all over Europe, including Leiden University. It has funded almost 7,000 researchers, leading to just short of 100,000 scientific articles. A total of…

The thesis mainly contributes to the characterization of Majorana fermions as they appear in the Condensed Matter context.