A new way of taking pictures of the retina could give medics a powerful new tool in diagnosing and monitoring the most prevalent diseases of the eye — glaucoma, diabetic retinopathy, and age related macula degeneration. The technique was revealed today at the Institute of Physics conference Photon 04 in Glasgow.
By 2020 there will be 200 million visually-impaired people worldwide but 80% of these cases are preventable or treatable. For this to happen, screening and early detection are crucial. Sonny Ramachandran, from Heriot Watt University in Edinburgh, outlined a new technique that uses spectral imaging, a non-invasive and safe method of taking pictures of the retina, to study the blood vessels of the eye and reveal the presence or progression of any disease.
They modified a standard ophthalmoscope, adding a liquid crystal tuneable filter, which allowed them to take images of the retina at a series of specific wavelengths. The images are captured by a sophisticated digital camera - a cooled, low noise CCD camera. Image processing corrects for the movements of the eye while the pictures are being taken, and a large set of images are combined in a "data cube" to improve the quality of the resolution.
David Reid | EurekAlert!
Computer model predicts how fracturing metallic glass releases energy at the atomic level
20.07.2018 | American Institute of Physics
What happens when we heat the atomic lattice of a magnet all of a sudden?
18.07.2018 | Forschungsverbund Berlin
A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.
The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
20.07.2018 | Power and Electrical Engineering
20.07.2018 | Information Technology
20.07.2018 | Materials Sciences