Research groups
Coherent X-ray Scattering
The main focus is on fundamental problems in chemistry and physics with biological relevance that often require replenishable sample delivery using liquid microjets and aerosol beams. Applications include coherent x-ray scattering of water structure and ice nucleation upon deep supercooling, coherent diffractive imaging of viruses, cells, and proteins as well as serial femtosecond crystallography and x-ray photon correlation spectroscopy of proteins in crystals and aqueous solutions. Read more
Experimental Biomolecular Physics
Glass processing
Research activities deal with laser processing of glass. Our application oriented activities cover Optical Fiber Sensing, Specialty fiber fabrication, and glass Additive Manufacturing. Key infrastructure we developed include an interferometric setup for manufacturing fiber Bragg gratings (using a 213 nm UV-laser), a laser based draw tower (using a 5.5 µm CO-laser), and systems for laser processing and glass additive manufacturing (using 10.6 µm CO2-lasers). Read more
Nanochemistry
The focus of the research group is on designing and developing novel nanomaterials architectures with desired characteristics; developing energy and resource effective synthesis methods as well as detailed microstructural, physicochemical, thermo-physical and transport characterisations. Read more
Nanophosphors
Our group develops new types of nanomaterials for light conversion applications. Those include semiconductor nanocrystals, mainly silicon, metal nanoclusters and rare-earth doped nanoparticles. We work both on fabrication and optical characterization, with down to a single-particle level resolution. Photonic structures and devices, such as Quantum Dot Glass for photovoltaics, based on these nanomaterials are also being developed and studied. Read more
Nanophotonic Materials
Photonic crystals is one of the hottest scientific topics today. A photonic crystal could make it possible to manipulate light in much the same way as we handle electrons in a semiconductor crystal. Realization of photonic crystals in semiconductors would open the way towards photonic integration with ensuing increases in functionality and compactness. Read more
Nonlinear Optical Materials
Visual Optics
We investigate the system of the human eye with the aim of understanding and improving peripheral vision. Visual optics is the science of how the optics of the eye forms an image that is then detected and interpreted by the retina and the brain. The field has advanced fast during the last decades due to the advent of wavefront sensing and adaptive optics correction. The visual optics group at KTH plays a central role in developing these techniques for the off-axis optical errors of the human eye and for psychophysical evaluation of the peripheral visual function. Read more
X-ray Bioimaging
X-Ray Optics and Nanoimaging
X-ray imaging with x-ray nanobeams is one of the most rapidly developing areas at synchrotron radiation and x-ray free-electron laser facilities around the world. Exciting applications of these nanobeams, i.e., x-ray radiation focused to very small spot sizes in the 10 – 100 nm range, can be found in many fields of science. The unique quality of x-ray nanobeam imaging is the opportunity for direct in-situ and in-operandi experiments exploring very challenging physical environments and giving direct correlation between structure and physical properties. Read more