Friday 19 September 2014

Phosphorus a promising semiconductor

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Grain boundaries are rows of defects that disrupt the electronic properties of two-dimensional materials like graphene, but new

The post Phosphorus a promising semiconductor has been published on Technology Org.

 
#materials 
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Graphene sensor tracks down cancer biomarkers

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An ultrasensitive biosensor made from the wonder material graphene has been used to detect molecules that indicate an increased risk of developing cancer. The biosensor has been shown to be more than five times more sensitive than bioassay tests currently in use, and was able to provide results in a matter of minutes, opening up the possibility of a rapid, point-of-care diagnostic tool for patients.

via Science Daily

An anomaly in satellites' flybys confounds scientists

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When space probes, such as Rosetta and Cassini, fly over certain planets and moons, in order to gain momentum and travel long distances, their speed changes slightly for an unknown reason. A researcher has now analyzed whether or not a hypothetical gravitomagnetic field could have an influence. However, other factors such as solar radiation, tides, or even relativistic effects or dark matter could be behind this mystery.

via Science Daily

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Shrink-wrapping spacesuits: Spacesuits of the future may resemble a streamlined second skin

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For future astronauts, the process of suiting up may go something like this: Instead of climbing into a conventional, bulky, gas-pressurized suit, an astronaut may don a lightweight, stretchy garment, lined with tiny, musclelike coils. She would then plug in to a spacecraft's power supply, triggering the coils to contract and essentially shrink-wrap the garment around her body.

via Science Daily

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Latest measurements from the AMS experiment unveil new territories in the flux of cosmic rays

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The Alpha Magnetic Spectrometer collaboration has just presented its latest results. These are based on the analysis of 41 billion particles detected with the space-based AMS detector aboard the International Space Station. The results provide new insights into the nature of the mysterious excess of positrons observed in the flux of cosmic rays.

via Science Daily

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Toward optical chips: Promising light source for optoelectronic chips can be tuned to different frequencies

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Chips that use light, rather than electricity, to move data would consume much less power -- and energy efficiency is a growing concern as chips' transistor counts rise. Scientists have developed a new technique for building MoS2 light emitters tuned to different frequencies, an essential requirement for optoelectronic chips. Since thin films of material can also be patterned onto sheets of plastic, the same work could point toward thin, flexible, bright, color displays.

via Science Daily

Potentially Habitable Moons

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For astrobiologists, these may be the four most tantalizing moons in our Solar System. Shown at the same scale, their exploration by interplanetary spacecraft has launched the idea that moons, not just planets, could have environments supporting life. The Galileo mission to Jupiter discovered Europa's global subsurface ocean of liquid water and indications of Ganymede's interior seas. At Saturn, the Cassini probe detected erupting fountains of water ice from Enceladus indicating warmer subsurface water on even that small moon, while finding surface lakes of frigid but still liquid hydrocarbons beneath the dense atmosphere of large moon Titan. Now looking beyond the Solar System, new research suggests that sizable exomoons, could actually outnumber exoplanets in stellar habitable zones. That would make moons the most common type of habitable world in the Universe.

Zazzle Space Gifts for young and old

Hubble Space Telescope iPad Mini Cases

Here's a great iPad case from Zazzle featuring a Hubble-related design. Maybe you'd like to see your name on it? Click to personalize and see what it's like!


tagged with: hubble, telescope, image, space, astronomy, explore, nasa, universe

My favorite NASA image on your iPad.

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Winter in Argyre

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Over billions of years, the southern uplands of Mars have been pockmarked by numerous impact features, which are often so closely packed that they overlap. One such feature is Hooke crater, shown in this frost-tinged scene, imaged by ESA’s Mars Express during winter in the southern hemisphere.




via ESA Space Science

http://www.esa.int/Our_Activities/Space_Science/Mars_Express/Winter_in_Argyre

LEDA: hydrodynamic experiment involving non-nuclear surrogate materials

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Los Alamos National Laboratory has successfully fired the latest in a series of experiments at the Nevada National

The post LEDA: hydrodynamic experiment involving non-nuclear surrogate materials has been published on Technology Org.

 
#materials 
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Monster galaxies gain weight by eating smaller neighbors

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Massive galaxies in the Universe have stopped making their own stars and are instead snacking on nearby galaxies, according to research by Australian scientists.



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Vintage Astronomy, Celestial Planisphere Map Posters

Here's a great poster featuring a beautiful image from deep space


tagged with: antique, constellations, retro, planisphere, americana, vintage illustration, norhtern hemisphere, celestial map, star chart, astronomy

Vintage illustration astronomy and celestial map by Joseph (James) Moxon (1627-1691). Star chart featuring a world planisphere and celestial sphere - both are surrounded by scenes from the Old and New Testaments including vignettes of the Creation, the Garden of Eden, the Deluge, Moses, the Crucifixion and angels observing the Holy City. Created circa 1691 -1699.

Joseph Moxon was a hydrographer to Charles II, was an English printer of mathematical books and maps, a maker of globes and mathematical instruments, and mathematical lexicographer. Joseph Moxin produced the first English language dictionary devoted to mathematics. In November 1678 he became the first tradesman to be elected as a Fellow of the Royal Society.

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Click to customize with size, paper type etc.
via Zazzle Astronomy market place

Name, Orion Nebula, structures of deep space Gift Wrap

Get your out-of-this-world gift wrap here! Perfect for Christmas gifts for anyone who is fascinated by what the universe holds in store for us!


tagged with: orion nebula detail, sculpted gas clouds, sgcion, stellar winds, sculpting trapezium stars, messier 42, messier 43, star galaxies, outer space, deep space astronomy

Galaxies, Stars and Nebulae series A region within the Orion Nebula showing the sculpting effect that stars can have on any surrounding gas clouds. This glowing region reveals arcs and bubbles formed when stellar winds - streams of charged particles ejected by the nearby Trapezium stars - collide with material.
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image code: sgcion

Image credit: NASA, ESA, M. Robberto (Space Telescope Science Institute/ESA) and the Hubble Space Telescope Orion Treasury Project Team

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Click to personalize with name and message - or just to see it bigger.
via Zazzle Astronomy market place

The Rose Galaxies, Arp 273 Square Sticker

Here's a great sheet of stickers featuring a beautiful image from deep space


tagged with: envelope sealers, trgarp, breathtaking hubble space photos, rose galaxy, interacting spiral galaxies, amazing astronomy images, arp 273, star forming activity, new born stars, star nursery, hot young stars

Galaxies, Stars and Nebulae series An amazing outer space picture featuring two interacting galaxies that together form the shape of a rose. The larger of the spiral galaxies, UGC 1810, has a disk that is twisted by the gravitational pull of its companion galaxy, UGC 1813.
Knots of young, hot blue stars bejewel the spirals arms in glistening starlight while below, its smaller, nearly edge-on companion is going through intense star formation at its centre, perhaps triggered by their encounter.

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image code: trgarp

Image credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)

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Click to customize.
via Zazzle Astronomy market place

Physicists design zero-friction quantum engine

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(Phys.org) —In real physical processes, some energy is always lost any time work is produced. The lost energy almost always occurs due to friction, especially in processes that involve mechanical motion. But in a new study, physicists have designed an engine that operates with zero friction while still generating power by taking advantage of some quantum shortcuts.



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Open Star Cluster NGC 3324 in the Carina Nebula Wall Stickers

Here's a great wall decal featuring a beautiful image from deep space


tagged with: star cluster, ngc 3324, carina nebula, carina, nebula, stars, space, outer space, astronomy, cosmology

NGC 3324 is a star cluster at the northwest corner of the Carina Nebula (NGC 3372), home of the Keyhole Nebula and star Eta Carinae. This photograph was produced by European Southern Observatory (ESO). Their website states: "All ESO still and motion pictures are released under the Creative Commons Attribution 3.0 Unported, unless the credit byline indicates otherwise." Source http://www.eso.org/public/images/eso1207a/ Author ESO

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Spiral Galaxy NGC 1672 by the Hubble Telescope iPad Mini Case

Here's a great iPad case from Zazzle featuring a Hubble-related design. Maybe you'd like to see your name on it? Click to personalize and see what it's like!


tagged with: galaxy, ngc, 1672, astronomy, space, ngc 1672, spiral galaxy, outer space, hubble, hubble telescope, hubble space telescope

This NASA Hubble Space Telescope view of the nearby barred spiral galaxy NGC 1672 unveils details in the galaxy’s star-forming clouds and dark bands of interstellar dust. NGC 1672 is more than 60 million light-years away in the direction of the southern constellation Dorado. These observations of NGC 1672 were taken with Hubble's Advanced Camera for Surveys in August of 2005. Sign up to Mr. Rebates for FREE and save 12% on any zazzle order in addition to a $5.00 sign up bonus All Rights Reserved; without: prejudice, recourse or notice (U.C.C. 1-308) http://commons.wikimedia.org/wiki/File:NGC_1672_HST.jpg galaxy ngc 1672 astronomy space "ngc 1672" "spiral galaxy" "outer space" hubble "hubble telescope" "hubble space telescope"

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