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Safety requires everyone's responsibility and awareness. Safety work at the Division of Synchrotron Radiation Research is regulated at three levels:General RegulationsThe "General Regulations" are relevant for everyone working at the division. Specific Safety RegulationsThe "Specific Safety Regulations" are relevant for everyone working in the laboratories of the division, i.e. the Scanning Probe
https://www.sljus.lu.se/safety-information-employees - 2026-05-09
Our research concerns the intersection of nanoscience and X-ray science. We use X-rays to investigate nanostructured devices, and we develop nanostructures as X-ray detectors. We have a strong collaboration with the Nanomax beamline at MAX IV, and we also visit other synchrotrons for experiments. Most of the projects also involve colleagues in NanoLund, and we are frequent users of the Lund Nano L
https://www.sljus.lu.se/jesper-wallentin-0 - 2026-05-09
Metal halide perovskites are most famous for their rapid development in solar cells, but they are also promising materials for X-ray scintillation detectors. We are synthesizing CsPbBr3 nanowire arrays using solution growth, by using anodized aluminum oxide nanopores as templates.Our first paper in this project showed that the nanowires have an impressive stability to air exposure, with samples ex
https://www.sljus.lu.se/growth-metal-halide-perovskite-nanowires-x-ray-detection-applications - 2026-05-09
We have discovered a method to grow free-standing vertically aligned CsPbBr3 metal halide perovskites [Zhang 2022]. Part of the nanowires can be converted to blue-emitting CsPbCl1.1Br1.9. MHPs are soluble in polar solvents, which makes normal lithography processing schemes difficult to use. However, we have found a method to perform electron beam lithography (EBL) using only non-polar solvents [La
https://www.sljus.lu.se/free-standing-metal-halide-perovskite-nanowires-devices-and-heterostructures - 2026-05-09
Traditional X-ray detectors use bulk crystals, which limits their resolution. In this project, financed by an ERC Starting Grant, we are developing vertical arrays of nanowires as high-resolution X-ray detectors. We have shown that X-rays can be detected by single nanowires, with much higher spatial resolution than commercial systems [Chayanun 2020].X-rays that are absorbed in a semiconductor exci
https://www.sljus.lu.se/nanostructured-x-ray-detectors-and-x-ray-beam-induced-current-xbic - 2026-05-09
X-ray diffraction can be used to study strain, piezoelectricity and heating in crystalline samples. Modern X-ray optics can reach well below 100 nm focus size, and with coherent phase retrieval methods the spatial resolution can reach around 10 nm. Hard X-rays can penetrate through thick samples, allowing measurements of operational devices [Wallentin 2016]. We use such methods to investigate a wi
https://www.sljus.lu.se/nanoscale-coherent-x-ray-diffraction - 2026-05-09
We have recently shown that it is possible to image ferroelastic domains inside nanowires of the metal halide perovskite CsPbBr3 [Marcal 2020] [Marcal 2024]. High temporal resolution can be achieved with full-field methods [Marcal 2022]. A presentation by Lucas Marcal on these results can be found here. Similar methods can be used to image ferrolastic domains induced by AFM [Marcal 2021]. We als
https://www.sljus.lu.se/x-ray-imaging-ferroic-domains - 2026-05-09
In this project, we have built a phase contrast X-ray tomograph based on a microfocus Cu source. Traditional X-ray imaging is based on absorption contrast, which has poor contrast for small and weakly absorbing samples. Much better contrast can be achieved using phase contrast [Dierks 2020]. The system is based on a microfocus X-ray source with a Cu target, a high-resolution detector and a high-pr
https://www.sljus.lu.se/phase-contrast-tomography - 2026-05-09
SummaryLight is indisputably at the origin of life on earth, driving all photo-chemical reactions in atmosphere, biological systems, and “man-made" energy related materials. On the atomic scale level, we can describe these photo-chemical reactions, through a multitude of elementary processes occurring on the ultrafast time scale (from sub femtosecond to picosecond) where the initial energy/light h
https://www.sljus.lu.se/research-landing-page/ultrafast-dynamics-small-quantum-systems-sqs - 2026-05-09
SummaryTechnical and industrial relevant chemical processes such as catalysis and electrochemistry occur at solid surfaces in complex environments in terms of material composition, pressure, temperature and medium. As a consequence, the atomic scale structure and the environmental composition close to the active material which governs the chemical processes are notoriously difficult to determine.T
https://www.sljus.lu.se/research-landing-page/catalysis-and-electrochemistry - 2026-05-09
Summary Electron spectroscopy has provided much of our current knowledge on the chemical and physical processes involved in the complex interactions between a solid surface and its surroundings. Such processes are for example important for surface catalysis, corrosion and thin film growth.As the surface state depends strongly on its environment, it is vital that such studies are performed under re
https://www.sljus.lu.se/research-landing-page/ambient-pressure-xps - 2026-05-09
Summary The interactions of electrons in materials are a rich and complex source of physical problems, in part due to the issues brought about by dealing with the large number of electronic many-body interactions, both with other electrons and with the parent ions. These interactions give rise to fundamentally quantum mechanical states such as superconductivity and magnetism. New quantum states
https://www.sljus.lu.se/research-landing-page/magnetism-and-superconductivity - 2026-05-09
SummaryWe develop and use methods for analysis of nanostructures with highest possible spatial and temporal resolution. One aim of this research is to understand the role of the surfaces and interfaces for their function and properties. Another goal is to study devices under as realistic conditions as possible. The aim is both fundamental physical understanding as well as enabling the design of no
https://www.sljus.lu.se/research-landing-page/semiconductor-nanostructures - 2026-05-09
SummaryAccelerator physics deals with how particle beams are created, accelerated, steered, measured and controlled to finally be tailored to specific purposes. This is relevant for laboratories such as ESS, CERN and the MAX IV, but also for medicine or semi-conductor development.The focus of the Accelerator Physics group is on electron accelerators to produce synchrotron radiation. While our main
https://www.sljus.lu.se/research-landing-page/accelerator-physics - 2026-05-09
SummaryWe develop and use novel methods for X-ray imaging with the highest possible spatial and temporal resolution.To this end, we use a wide range of X-ray imaging methods at different synchrotrons, including MAX IV in Lund, X-ray free-electron lasers, including European XFEL, as well as lab source systems. We collaborate with many other researchers, in particular at Lund University, MAX IV, and
https://www.sljus.lu.se/research/x-ray-imaging - 2026-05-09
Find publications in the research portalIn the Lund University Research Portal you can search for:Active researchers and doctoral students within our research areasResearch outputs, for example publicationsResearch projectsResearch infrastructuresResearch unitsThe Division’s profile in Lund University’s Research Portal Finished Bachelor's and Master's projects Finished degree projects at the Divis
https://www.sljus.lu.se/publications - 2026-05-09
Adresses Visiting addressLund UniversityDepartment of PhysicsDivision of Synchrotron Radiation ResearchProfessorsgatan 1SE-223 63 LundDelivery addressLund UniversityDepartment of PhysicsDivision of Synchrotron Radiation ResearchInstrumentmakaregränden 6SE-223 62 LundPostal addressLund UniversityDepartment of PhysicsDivision of Synchrotron Radiation ResearchBox 118SE-221 00 LundSweden Invoice addre
https://www.sljus.lu.se/contact - 2026-05-09
Ultrafast dynamics in small quantum systems Exploring the fundamental processes driven by light Catalysis and electrochemistry Catalysts and electrodes at work studied by light Ambient pressure x-ray photoelectron spectroscopy Making the next generation of 2D materials Magnetism and superconductivity Studying quantum states of matter Semiconductor nanostructures analysis Nanodevices at smallest ti
https://www.sljus.lu.se/research - 2026-05-09
Photoionization dynamics Attosecond pulses created by high harmonic generation (HHG) in gases allow us to study fundamental light-matter interaction processes with novel experimental techniques. The ultrashort light pulse leads to the creation of a wave packet that can be exploited to investigate attosecond dynamics in ionized systems. We apply interferometric techniques to access the correlated m
https://www.sljus.lu.se/research/ultrafast-dynamics-small-quantum-systems-sqs/attoscience - 2026-05-09
Imaging dynamics of small molecules Intensity distribution of emitted proton (H+) and oxygen ion (O)+ viewed by our detector when the water molecule is resonantly excited by X-rays.Atoms and molecules in electronically excited states decay via various processes which lead to bond breaking and ion formation, producing neutral and charged constituents that react with their neighbors. These processes
https://www.sljus.lu.se/research/ultrafast-dynamics-small-quantum-systems-sqs/imaging-dynamics-molecules - 2026-05-09
