"So far, magnetic vortex states have been observed only in two dimensions; in other words: Within a plane," explains Sebastian Wintz, physicist at the Helmholtz-Zentrum Dresden-Rossendorf. These magnetic vortices typically occur in nanometer-scale magnetic disks. Wintz has now investigated three-dimensional magnetic layer systems together with his colleagues from HZDR and the Swiss Paul Scherrer...
An international team of physicists has demonstrated that chaos can beat order - at least as far...
An experimental, unmanned aircraft developed for the U.S. Air Force went hypersonic during a...
This photo shows a single optical section through the whole gut of a fruit fly (Drosophila melanogaster) larva expressing a reporter for Notch signaling pathway activity (green), and stained with cytoskeletal (red) and nuclear (blue) markers.
The COMSOL Multiphysics 4.3b simulation platform features application-specific modules, including Multibody Dynamics, Wave Optics, Molecular Flow, and Semiconductor and Electrochemistry.
Physicists may have created the smallest drops of liquid ever made in the lab. That possibility has been raised by the results of a recent experiment conducted by Vanderbilt physicist Julia Velkovska and her colleagues at the Large Hadron Collider, the world's largest and most powerful particle collider located at the European Laboratory for Nuclear and Particle Physics (CERN) in Switzerland.
RENO, Nev. – A new window into the nature of the universe may be possible with a device proposed by scientists at the University of Nevada, Reno and Stanford University that would detect elusive gravity waves from the other end of the cosmos. Their paper describing the device and process was published in the prestigious physics journal Physical Review Letters.
Nanomaterials exhibit unique properties that can only unfold when the structures of the material are very small – that is, at the nanoscale. In order to exploit these special properties such as, for example, specific quantum effects it is very important to produce predefined nanostructures in a controlled way and interpret the formation of their shape. Scientists try to understand how to initiate...
This 10x photo of red algae (Ptilota) received an honorable mention in the 2012 Nikon Small World Photomicrophotography Competition. Dr. Arlene Wechezak of Anacortes, WA, used a darkfield technique to capture the image. www.nikonsmallworld.com
Researchers of the Fraunhofer Institute for Applied Solid State Physics and the Karlsruhe Institute for Technology have achieved the wireless transmission of 40 Gbit/s at 240 GHz over a distance of one kilometer. Their most recent demonstration sets a new world record and ties in seamlessly with the capacity of optical fiber transmission.
Chances are you know how many miles your car logs for each gallon or tankful of gas, but you probably have only a foggy idea of how much energy your house consumes, even though home energy expenditures often account for a larger share of the household budget.
Scientists using images from NASA's Mars Reconnaissance Orbiter, or MRO, have estimated that the planet is bombarded by more than 200 small asteroids or bits of comets per year forming craters at least 12.8 feet (3.9 meters) across. Researchers have identified 248 new impact sites on parts of the Martian surface in the past decade
Much like the inside of an operating room, in the clean room at NASA's Goddard Space Flight Center in Greenbelt, Md., engineers worked meticulously to implant part of the eyes of the James Webb Space Telescope. They scrubbed up and suited up to perform one of the most delicate performances of their lives. That part of the eyes, the MIRI, or Mid-Infrared Instrument, will glimpse the formation of...
Writing in Nature, a large international team led Dr Roman Gorbachev from The University of Manchester shows that, when graphene placed on top of insulating boron nitride, or 'white graphene', the electronic properties of graphene change dramatically revealing a pattern resembling a butterfly. The pattern is referred to as the elusive Hofstadter butterfly that has been known in theory for many...
This composite image of a galaxy illustrates how the intense gravity of a supermassive black hole can be tapped to generate immense power. The image contains X-ray data from NASA's Chandra X-ray Observatory (blue), optical light obtained with the Hubble Space Telescope (gold) and radio waves from the NSF's Very Large Array (pink).
A drone the size of a fighter jet took off from the deck of an American aircraft carrier for the first time May 14, 2013, in a test flight that could eventually open the way for the U.S. to launch unmanned aircraft from just about any place in the world. The X-47B is the first drone designed to take off and land on an aircraft carrier, meaning the U.S. military would not need permission from other countries to use their bases.
This 18x photo of the eye and first segments of a cinnabar flat beetle (Cucujus cinnaberinus) received an honorable mention in the 2012 Nikon Small World Photomicrophotography Competition. Nikola Rahme of Budapest, Hungary used reflected light to capture the image.
The SC13 international conference for high performance computing, networking, storage and analysis, is accepting nominations for three distinguished awards that will be presented at the conference in November.The IEEE Seymour Cray Computer Science and Engineering Award, the IEEE Sidney Fernbach Memorial Award and the ACM-IEEE Ken Kennedy Award will be announced at SC13, to be held November 17 – 22 at the Colorado Convention Center.
An international team of physicists at the radioactive-beam facility ISOLDE at CERN have for the first time measured the ionization potential of the rare radioactive element astatine. The value for astatine, published in the journal Nature Communications, could help chemists to develop applications for the element in radiotherapy, and will serve as a benchmark for theories that predict the structure of super-heavy elements.
CAMBRIDGE, MA -- The way in which radio spectrum is currently allocated to different wireless technologies can lead to gross inefficiencies. In some regions, for instance, the frequencies used by cellphones can be desperately congested, while large swaths of the broadcast-television spectrum stand idle.
Friction is an omnipresent but often annoying physical phänomenon: It causes wear and energy loss in machines as well as in our joints. In search of low-friction components for ever smaller components, a team of physicists led by the professors Thorsten Hugel and Alexander Holleitner now discovered a previously unknown type of friction that they call “desorption stick.”
This 5x photo of a snow crystal, illuminated with colored lights, received an honorable mention in the 2012 Nikon Small World Photomicrophotography Competition. Dr. Kenneth Libbrecht of the Department of Physics at California Institute of Technology (Caltech) in Pasadena, CA, used a homemade microscope to capture the image.
New York University physicists have uncovered how energy is released and dispersed in magnetic materials in a process akin to the spread of forest fires, a finding that has the potential to deepen our understanding of self-sustained chemical reactions.
This 63x photo of a multinucleate filamentous fungus (Ashbya gossypii) CLN3 mRNA (orange) and nuclei (blue) received an honorable mention in the 2012 Nikon Small World Photomicrophotography Competition. ChangHwan Lee of Dartmouth College in Hanover, NH, used single molecule fluorescence in-situ hybridization to capture the image.
Every time Los Angeles exhales, odd-looking gadgets anchored in the mountains above the city trace the invisible puffs of carbon dioxide, methane and other greenhouse gases that waft skyward. Halfway around the globe, similar contraptions atop the Eiffel Tower and elsewhere around Paris keep a pulse on emissions from smokestacks and automobile tailpipes.
ANN ARBOR---Leading nanoscientists created beautiful, tiled patterns with flat nanocrystals, but they were left with a mystery: Why did some sets of crystals arrange themselves in an alternating, herringbone style? To find out, they turned to experts in computer simulation at the University of Michigan and the Massachusetts Institute of Technology.
Improving our understanding of the human brain, gathering insights into the origin of our universe through the detection of gravitational waves, or optimizing the precision of GPS systems- all are difficult challenges to master because they require the ability to visualize highly fragile elements, which can be terminally damaged by any attempt to observe them. Now, quantum physics has provided a...
When Michael Gore stands, it's a triumph of science and engineering. Eleven years ago, Gore was paralyzed from the waist down in a workplace accident, yet he rises from his wheelchair to his full 6-foot-2-inches and walks across the room with help from a lightweight wearable robot.