Science

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Retired GIOVE-A satellite helps SSTL demonstrate first High Altitude GPS navigation fix

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PTB measurements for the next computer chip generation: Cooperation between Carl Zeiss and PTB on EUV lithography extended

European companies are the world leaders in the development of EUV lithography for the manufacture of semiconductor chips with even shorter wavelengths than up to now, i.e. with 13.5 nanometres in the spectral range of the so-called "Extreme UV (EUV)". The volume production of lens systems and wafer scanners of EU lithography (EUVL) is planned for 2014. In this development, the Physikalisch-Technische Bundesanstalt (PTB) is at the fore. With a new EUV beamline at PTB's own electron storage ring - the Metrology Light Source (MLS) in Berlin-Adlershof - it will characterize EUVL lens systems for this purpose. The cooperation with Carl Zeiss SMT GmbH, which has been running since 1998, has now been extended for another four years. PTB measurements will help to give proof of the quality of the Zeiss lens systems in the so-called "steppers" (lithography machines) of the Dutch company ASML, the global market leader in this field.

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Beamlines and instrumentation at the Metrology Light Source (MLS). (EUV beamline: #3; set-up for the calibration of radiation sources: #2b; undulator beamline: #1d; infrared beamline: #6)

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Small and efficient - water nanodroplets cool biomolecules ultrafast

Researchers of the Max-Born-Institute at Berlin, Germany, have observed how biomolecules transfer energy into extremely small water droplets in their environment. A water shell consisting of only 3 water molecules around a phospholipid molecule is sufficient for energy transfer within 1 ps.

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Upper left: Schematic of a reverse micelle consisting of phospholipid molecules. The phosphate groups of the lipid molecules (blue spheres) are arranged at the inner surface of the micelle. Water molecules are located in the inner part of the micelle. Upper right: Enlarged view of the structure of a phospholipid molecule. Oxygen atoms are shown in red, hydrogen atoms in white, carbon atoms in grey, the nitrogen atom in blue, and the phosphorus atom in orange. The angled water molecules are arranged around the phosphate (PO4) group. Lower part: Scheme of energy transfer. In the experiments, the (asymmetric) phosphate vibration is initially excited (red oxygen atoms). The energy released in the decay of the vibration is transferred to the surrounding water.

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MESSENGER Finds New Evidence for Water Ice at Mercury's Poles, says NASA

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Permanently Shadowed Polar Craters
Shown in red are areas of Mercury’s north polar region that are in shadow in all images acquired by MESSENGER to date. Image coverage, and mapping of shadows, is incomplete near the pole. The polar deposits imaged by Earth-based radar are in yellow (from Image 2.1), and the background image is the mosaic of MESSENGER images from Image 2.2. This comparison indicates that all of the polar deposits imaged by Earth-based radar are located in areas of persistent shadow as documented by MESSENGER images. Updated from N. L. Chabot et al., Journal of Geophysical Research, 117, doi: 10.1029/2012JE004172 (2012).

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Even Brown Dwarfs May Grow Rocky Planets

ALMA sizes up grains of cosmic dust around failed star

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Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have for the first time found that the outer region of a dusty disc encircling a brown dwarf contains millimetre-sized solid grains like those found in denser discs around newborn stars. The surprising finding challenges theories of how rocky, Earth-scale planets form, and suggests that rocky planets may be even more common in the Universe than expected.

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Hubble Spots a Peculiar Compact Blue Dwarf Galaxy

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Origami Electronics at Printed Electronics USA: Leading designers of printed electronics collaborate on printed electronic demonstration give-a-way

On Dec 5-6, attendees to the Printed Electronics USA conference and exhibition in Santa Clara, CA, will receive their own origami printed electronic device. One of the compelling benefits of printed electronics is that electronics can be used in completely new and innovative form factors.

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The image above shows one side of the device

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Electrically spun fabric offers dual defense against pregnancy, HIV

The only way to protect against HIV and unintended pregnancy today is the condom. It's an effective technology, but not appropriate or popular in all situations.

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Fibers stick to a hard surface (top) and then can be removed to create a hollow ring (bottom left). Bottom right shows a closeup of the tiny fibers.

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NASA Researchers Discover Ancient Microbes in Antarctic Lake

In one of the most remote lakes of Antarctica, nearly 65 feet beneath the icy surface, scientists from NASA, the Desert Research Institute (DRI) in Reno, Nev., the University of Illinois at Chicago, and nine other institutions, have uncovered a community of bacteria. This discovery of life existing in one of Earth's darkest, saltiest and coldest habitats is significant because it helps increase our limited knowledge of how life can sustain itself in these extreme environments on our own planet and beyond.

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A Multi-Wavelength View of Radio Galaxy Hercules A

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Spectacular jets powered by the gravitational energy of a super massive black hole in the core of the elliptical galaxy Hercules A illustrate the combined imaging power of two of astronomy's cutting-edge tools, the Hubble Space Telescope's Wide Field Camera 3, and the recently upgraded Karl G. Jansky Very Large Array (VLA) radio telescope in New Mexico.