Bernardo Dias joined as a Ph.D. candidate. Welcome!
Bernardo will be working on analog optical image processing with 2D quantum materials.
Erik obtains Senior Qualification Education
On March 3, 2022 I obtained my senior qualification education. To achieve this I started a project to streamline and reorganize the exit qualifications of the Advanced Matter & Energy Physics program. Together with a large group of lecturers we discussed the various study lines of the program and proposed and implemented an update of the program. The project serves as blueprint for a revision of the entire Physics and Astronomy program.
Nonlocal metasurface for circularly polarized light detection
In our recent paper in Optica we demonstrate a metasurface photodetector that selectively absorbs one circular polarization state while the other is fully transmitted. Check out the details to unravel the subtle physics of light scattering by engineered dislocations in semiconductor nanowires!
Johanna Grönqvist joined us as a PostDoc researcher. Welcome!
Johanna will be working in a joint project between the Van Wezel Lab and the Van de Groep Lab.
Tutorial: Exciton resonance tuning for atomically-thin optics
Check out our new tutorial article in Journal of Applied Physics: a didactical introduction to metasurface and exciton physics, a comprehensive overview of excitonic materials, combined with a perspective on excitonic metasurfaces! The article is featured by the editor.
Optofluidics for dynamic optical metasurfaces
Check out our recent paper in Nature Nanotechnology where we combine microfluidics with nanophotonic metasurfaces to realize a comprehensive platform of optofluidics to achieve dynamic control of light fields!
Probing the strange metal with optical spectroscopy
One of the key mysteries in the cuprate phase diagram is the strange metallic phase, which features a variety of anomalous electronic properties. In recent years, various (magneto-) transport experiments have reported a singular behavior around p = 0.2 holes/Cu. In a new publication, we introduce a phenomenological 'generalized' interband transition to describe the incoherent optical response across the cuprate phase diagram. This allows us to directly connect optics to transport experiments.
Article in Nederlands Tijdschrift voor Natuurkunde published by van de Groep in collaboration with prof. Marcel Vonk
In this populair science magazine (in Dutch), we explain how a lens with a nanoscale thickness can be turned on/off at will using quantum materials!
Exciton resonance tuning of an atomically thin lens published in Nature Photonics
In our latest Nature Photonics paper we demonstrate how exciton resonances in monolayer 2D semiconductor can be used to realise large-area atomically-thin lenses with a tuneable intensity in the focus!
Cover image for Chemistry of Materials
Cover image for our paper in Chem. Mater. 2020, 32, 15, 6326
ENW-GROOT awarded to van Heumen and de Visser
NWO has awarded a grant of € 3 million within the open competition to the TOPCORE consortium led by UvA-physicist Dr. Erik van Heumen.
Strange metal Workshop 2020: Space and Order
The NWO funded strange metal program is organizing a workshop at the Lorentz center@Snellius from January 6, 2020 to January 10, 2020.
Optical properties of PdTe2 in Phys. Rev. Materials
We have published the first high resolution optical spectroscopy data on PdTe2. We demonstrate that the temperature dependence of the scattering rate can be explained by the presence of a vanHove singularity close to the Fermi level.
