Imagine what it was like to take a photograph of an object such as a tree, before the wide availablilty of zoom lenses. You would be able to make out the shape and the branches from a distance but you wouldnt be able to see the smaller branches or leaves. Until recently, Doctors have been in a similar situation regarding NMR (nuclear magnetic resonance) imaging of organs and other features deep within the body. Thanks to a new NMR microscope developed by Oxford Researchers, Doctors will in future be able to focus in with a magnification factor of around x100 on hot spots or areas identified as a potentially life threatening soft tissue disease such as cancer or an aneurysm in order to make a more reliable diagnosis in a more comfortable way for the patient.
The imaging of very small features within the human body using NMR has long been a desirable objective, not only because the images provided using current methods of PET (Positron Emission Tomography) scanning are not detailed enough i.e. they do not allow images of organs or other features deep within the body to be created in enough detail, but also because they involve the use of unpleasant processes such as injecting opaque dyes and time restricted large dose levels of X-rays.
Researchers at Oxford University have developed a waveguide technology which permits the detailed examination of features located at its tip. The tapered pickup allows the collection of very localised signals whilst isolating them from surrounding objects resulting in the possibility of collecting very high resolution MRI data.
Kim Bruty | alfa
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The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.
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Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".
Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...
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