Mar. 05, 2014
It's an odd twist. For scientists to determine if a cell is functioning properly, they must destroy it. This is what happens in X-ray fluorescence microscopy when biological specimens are exposed to ionizing radiation, which provides images with a level of detail that conventional microscopes just can't match. This exposure can change what is being imaged in profound ways, possibly giving false accounts of how the cell actually works.
To address this issue, researchers at the U.S. Department of Energy's (DOE) Argonne National Laboratory created a new probe that freezes cells to "see" at greater detail without damaging the sample.
moreMar. 04, 2014
Göttingen-based scientists working at DESY's PETRA III research light source have carried out the first studies of living biological cells using high-energy X-rays. The new method shows clear differences in the internal cellular structure between living and dead, chemically fixed cells that are often analysed. "The new method for the first time enables us to investigate the internal structures of living cells in their natural environment using hard X-rays," emphasises the leader of the working group, Prof. Sarah Köster from the Institute for X-Ray Physics of the University of Göttingen. The researchers present their work in the journal Physical Review Letters.
moreFeb. 09, 2014
By using a novel X-ray technique, researchers have observed a catalyst surface at work in real time and were able to resolve its atomic structure in detail. The new technique, pioneered at DESY's X-ray light source PETRA III, may pave the way for the design of better catalysts and other materials on the atomic level. It greatly speeds up the determination of atomic surface structures and enables live recordings of surface reactions like catalysis, corrosion and growth processes with a time resolution of less than a second.
moreApr. 25, 2013
Microscopes have been a centerpiece of experimental science since at least the 16th century, providing a window into the material world at extraordinarily small scales. As the structures examined decrease in size - some measuring just billionths of a meter - capturing an x-ray image at high spatial resolution while retaining sufficient imaging contrast becomes more difficult.
moreApr. 11, 2013
A team of researchers has made a major breakthrough in measuring the structure of nanomaterials under extremely high pressures. For the first time, they developed a way to get around the severe distortions of high-energy X-ray beams that are used to image the structure of a gold nanocrystal. The technique, described in Nature Communications, could lead to advancements of new nanomaterials created under high pressures and a greater understanding of what is happening in planetary interiors.
moreFeb. 19, 2013
Researchers at the London Centre for Nanotechnology (LCN) have revealed detailed 3D images of an important industrial coating that is used to reduce corrosion of ship hulls. The work, carried out in collaboration with international paints and coatings company Akzo-Nobel, allows the automatic identification of aluminium, talc, pigment and remaining filler components in the image, based solely on X-ray refractive data.
moreOct. 11, 2012
The theoretical and experimental framework of a new coherent diffraction strain imaging approach was developed in the Center for Nanoscale Materials' X-Ray Microscopy Group in collaboration with Argonne's Materials Science Division, together with users from IBM.
moreAug. 22, 2012
For the first time scientists have combined high-resolution imaging with 3-D viewing of the surface layer of material using X-ray vision in a way that does not damage the sample. This new technique expands the range of X-ray research possible for biology and many aspects of nanotechnology, particularly nanofilms, photonics, and micro- and nano-electronics. This new technique also reduces "guesswork" by eliminating the need for modeling-dependent structural simulation often used in X-ray analysis.
moreAug. 09, 2012
A new advance in X-ray imaging has revealed the dramatic three-dimensional shape of gold nanocrystals, and is likely to shine a light on the structure of other nano-scale materials.
Described in Nature Communications, the new technique improves the quality of nanomaterial images, made using X-ray diffraction, by accurately correcting distortions in the X-ray light.
moreApr. 02, 2012
Bruker Corporation announced that it has acquired all of the shares of SkyScan N.V., a scientific instruments company located near Antwerp, Belgium. Financial details were not disclosed. For the remainder for 2012, the acquisition of SkyScan is expected to add approximately US-$ 13 million to Bruker's revenue and to be accretive to EPS by about US-$ 0.01. SkyScan's revenue is derived approximately 50% from materials science and 50% from life science and preclinical imaging applications.