Young stars ejecting plasma could give us clues into the Sun’s past Kyoto, Japan — Down here on Earth we don’t usually notice, but the Sun is frequently ejecting huge masses of plasma into space. These are called coronal mass ejections (CMEs). They often occur together with sudden brightenings called flares, and sometimes extend far enough to disturb Earth’s magnetosphere, generating space weather phenomena including auroras or geomagnetic storms, and even damaging power grids on occasion. Scientists believe that when…
Nanopillars – densely packed nanoscale arrays of optically active semiconductors – have shown potential for providing a next generation of relatively cheap and…
The invention describes a highly sensitive semiconductor heterostructure for the detection of electromagnetic waves. The prototype works at room temperature in the range of 400nm – 4 µm. Expanding the detection range to lower wavelengths, e.g. in the soft x-ray range, should also be possible. The sensor is sensitive enough to detect single photons with a count rate of a few hundred MHz. The active area has a diameter of only 100 nm to a few µm.
The rating system, Graph500, tests supercomputers for their skill in analyzing large, graph-based structures that link the huge numbers of data points present…
U.S. policymakers must focus more closely on developing new energy storage technologies as they consider a national renewable electricity standard, according…
Simply put, they used chaotic patterns to encode and manipulate inputs to produce a desired output. They selected desired patterns from the infinite variety…
While our direct knowledge of black holes in the universe is limited to what we can observe from thousands or millions of light years away, a team of Chinese…
For more than 250 years, researchers have known that under certain conditions vapor bubbles can form in fluids moving swiftly over a surface. These bubbles…
Today, researchers who found the first hypervelocity stars escaping the Milky Way announced that their search also turned up a dozen double-star systems. Half…
The Department of Energy's National Energy Research Scientific Computing Center (NERSC), already one of the world’s leading centers for scientific…
His findings, which appear in the October issue of the journal “Physical Review E,” detail Cheng's work with a system designed to model cells in a biochemical…
Scientists who study acoustics (the “science of sound”) have over the years developed a variety of techniques to probe the hidden depths of oceans. This week,…
The semiconducting nanostructures might be used to revolutionize electronics by replacing conventional silicon components and circuits. However, one obstacle…
In clinical trials, images between participating institutions are usually exchanged on CD media that have to conform to the DICOM (Digital Imaging and…
The laws of physics might make the creation of a transporter which can dematerialise objects and then rematerialise them elsewhere a little beyond us, but it…
The researchers used the HERCULES high-intensity, table-top laser to create X-ray beams that rival those made in expensive and massive synchrotron particle…
Beside cardiovascular diseases, malignant tumours take
the second place in cause of human death. Neoplastic
…
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