Nov. 20, 2014
An international team of scientists led by Uppsala University has developed a high-throughput method of imaging biological particles using an X-ray laser. Images obtained with this method show projections of the carboxysome particle, a delicate and tiny cell organelle of photosynthetic bacteria. Results have been published in in Nature Photonics.
moreNov. 13, 2014
Researchers have taken an important step towards developing a new X-ray lens made of diamond. A team of scientists from the Technische Universität (TU) Dresden and Technische Universität Chemnitz as well as from DESY have successfully tested a new lens design. The group working with DESY Leading Scientist, Professor Christian Schroer, presents the results in the scientific journal Applied Physics Letters.
moreSep. 25, 2014
The sharp X-ray vision of DESY´s research light source PETRA III paves the way for a new technique to produce cheap, flexible and versatile double solar cells. The method developed by scientists from the Technical University of Denmark (DTU) in Roskilde can reliably produce efficient tandem plastic solar cells of many metres in length, as a team around senior researcher Jens W. Andreasen reports in the journal Advanced Energy Materials.
moreSep. 22, 2014
Reaearchers from Göttingen in collaboration with colleagues from Augsburg have 'filmed' the movement of lipid molecules using an X-ray stroboscope at DESY. In the scientific journal Physical Review Letters, researchers lead by Professor Tim Salditt of the University of Göttingen report that their study offers new insights into the dynamics of biomolecules, which compose materials such as cell membranes. The cell membranes consist of a double layer of lipid molecules; the properties of the membranes are of great interest because they control which substances enter and exit a biological cell and also determine which materials are exchanged between different cell regions.
moreJul. 07, 2014
Macromolecular complexes composed of self-assembling proteins and nucleic acids hold promise for a wide range of applications, including drug delivery, sensing and molecular electronics. Scientists have developed a broad array of x-ray scattering techniques for characterizing the shape and surface morphology of these complexes, but probing their internal structure remains a challenge. Changyong Song and colleagues from the RIKEN SPring-8 Center and RIKEN Advanced Institute for Computational Science have now devised a structural analysis scheme based on complementary advanced x-ray techniques that has allowed them to peer inside an RNA macromolecular complex for the first time. Results were published in Nature Communications.
moreJun. 23, 2014
Physicists at HZB have developed a process to generate improved lenses for X-ray microscopy that provide both better resolution and higher throughput. To accomplish this, they fabricate three-dimensional X-ray optics for volume diffraction that consist of on-chip stacked Fresnel zone plates. These three-dimensional nanostructures focus the incident X-rays much more efficiently and enable improved spatial resolution below ten nanometres. Results have been published in the journal Nano Research.
moreJun. 18, 2014
Progress in the field of nanotechnology can only be achieved, if analytical methods for the characterization of nanostructures continuously improve. Due to the structure's small size visible light cannot be utilized for nanoanalytical techniques. In point of fact, microscopic methods with electron waves or X-rays must be applied here, as the wavelengths, they work with, are small enough. Multilayer Laue lenses (MLL) offer a most promising approach to developing highest resolution X-ray optics.
moreApr. 22, 2014
The tropical disease malaria is caused by the Plasmodium parasite. For its survival and propagation, Plasmodium requires a protein called actin. Scientists of the Helmholtz Centre for Infection Research (HZI) in Germany used high-resolution structural biology methods to investigate the different versions of this protein in the parasite in high detail. Their results, published in the scientific journal PLOS Pathogens, may in the future contribute to the development of tailor-made drugs against malaria-a disease that causes more than half a million deaths per year.
moreApr. 04, 2014
In biology, a protein's shape is key to understanding how it causes disease or toxicity. Researchers who use X-rays to take snapshots of proteins need a billion copies of the same protein stacked and packed into a neat crystal. Now, scientists using exceptionally bright and fast X-rays can take a picture that rivals conventional methods with a sheet of proteins just one protein molecule thick.
moreMar. 27, 2014
Scientists have used a particle accelerator to obtain high-speed 3D X-ray visualizations of the flight muscles of flies. The team from Oxford University, Imperial College, and the Paul Scherrer Institute (PSI) developed a groundbreaking new CT scanning technique at the PSI's Swiss Light Source to allow them to film inside live flying insects. Their article, including 3D movies of the blowfly flight motor, is published in the open access journal PLOS Biology. The movies offer a glimpse into the inner workings of one of nature's most complex mechanisms, showing that structural deformations are the key to understanding how a fly controls its wingbeat (see videos).