Astro Bob | Celestial happenings you can see from your own backyard Damaged graphene surfaces 'heal spontaneously' if torn Graphene has long-been touted as a miracle substance, one which -- if we master it -- we could use to construct almost anything our imaginations can conceive, from quantum computers to space elevators. The problem, though, is mastering it, because that means first understanding it -- and it looks like we've just discovered another thing about graphene we didn't really expect: It can heal itself if it gets damaged. A team of physicists at the University of Manchester, led by Nobel Prize-winner Konstantin Novoselov, has been examining graphene under an electron miscroscope to try and understand its behaviour better. Graphene sheets are only one atom thick, so it's very difficult to construct large panels of it. Because it's made of carbon, and carbon likes to bond with itself, that means sections of graphene tend to curl up into small balls. The team fired an electron beam at a graphene sheet, cutting a small hole in it, then added in atoms of palladium and nickel.
SOLAR IMPULSE - Solar Impulse 2 Whereas the prototype uses existing technologies, Solar Impulse HB-SIB requires the development of new materials and new construction methods. Solvay has invented electrolytes that allow the energy density of the batteries to be increased; Bayer MaterialScience is allowing the project to make use of its nanotechnologies; and Décision is using carbon fibers that are lighter in weight than any previously seen. The first wing spar section was delivered to Dübendorf in March 2012. After the official presentation of Solar Impulse 2 to the public on April 9th, the airplane will be rigorously tested during 2014, and the Round-The-World flight will be attempted between March and July 2015.
The future: MakerBot’s badass 3D scanner prototype lets you replicate real-world objects MakerBot has announced a new Digitizer 3D Desktop Scanner prototype that analyzes real-world objects and generates designs compatible with its 3D printer line. A preview page for the scanner, which uses lasers and cameras to essentially create a 3D CAD model, is up on the MakerBot site, but the project is still in prototype stage, so it’s likely going to be a while before this thing is released. “We are super excited to be able to announce at SXSW Interactive that we are developing the MakerBot Digitizer Desktop 3D Scanner,” MakerBot CEO Bre Pettis said in a statement. “It’s a natural progression for us to create a product that makes 3D printing even easier. Pettis went on to note that “archiving, prototyping, replicating, and digitizing prototypes, models, parts, artifacts, artwork, sculptures, clay figures, jewelry, etc.” are all possible uses for the scanner. “If something gets broken, you can print it again,” he said. Image credit: iStockphoto
BBC Space – Explore the planets, black holes, stars and more Professor Kostya Novoselov (Condensed Matter Physics Group - The University of Manchester) Royal Society Research Fellow Research theme: Graphene and other Two-Dimensional Materials Full CV and Main Publications pdf Postal Address: School of Physics & Astronomy, University of Manchester, Oxford Road, Manchester M13 9PLUK Factual Summary Published over 60 peer-refereed research papers (mainly as the principal/corresponding author) including Nature and Science articles and more than 15 papers in Nature Materials, Nature Physics, Nature Nanotechnology, Reviews of Modern Physics, Physical Review Letters, PNAS. Awards 2010 Nobel Prize for "groundbreaking experiments regarding the two-dimensional material graphene". 2008 European Research Council, Starting Grant "Physics and Applications of Graphene" 2006 Royal Society Research Fellowship "The scheme by The Royal Society (UK) aims to provide outstanding scientists, who should have the potential to become leaders in their chosen field, with the opportunity to build an independant research career" Extras Science Watch 2008 'U.
Great Lakes Science Center Great Lakes Science Center is funded by the citizens of Cuyahoga County through Cuyahoga Arts and Culture, grants, funds, and corporate and individual gifts. The museum opened in July 1996. The center's exhibits support STEM (science, technology, engineering, math) with exhibits including the BioMedTech Gallery, advanced energy, science phenomena and space. The Science Center is home to the NASA Glenn Visitor Center, one of only 11 such Visitor Centers in the country. Also, Science Center staff conduct daily science demonstrations. Throughout the school year, the Science Center provides STEM education to field trip students each year with programs and exhibits supporting classroom curriculum by meeting Ohio Revised Standards in Science. The Science Center installed a wind turbine in its front yard in summer 2006. NASA Glenn Visitor Center The Skylab 3 Apollo Command Module is on display in the visitor center. OMNIMAX Theater Steamship William G. Great Science Academy
MakerBot Unveils Digitizer Desktop 3D Scanner MakerBot opened this year's SXSW in Austin by unveiling the MakerBot Digitizer Desktop 3D Scanner, a device intended to facilitate 3D printing on the company's flagship devices. "It's a natural progression for us to create a product that makes 3D printing even easier," Bre Pettis, CEO of MakerBot, said in a statement. "With the MakerBot Digitizer Desktop 3D Scanner, now everyone will be able to scan a physical item, digitize it, and print it in 3D – with little or no design experience." At this point, the Digitizer 3D scanner is still a prototype, and MakerBot said it will spend time testing, scanning, and 3D printing the items scanned with it. "The MakerBot Digitizer Desktop 3D Scanner is an innovative new way to take a physical object, scan it, and create a digital file – without any design, CAD software or 3D modeling experience at all – and then print the item again and again on a MakerBot Replicator 2 or MakerBot Replicator 2X Experimental 3D Printer," Pettis said.
The Beginning of the Universe and the Limit of Knowledge “Despite its name, the big bang theory is not really a theory of a bang at all. It is really only a theory of the aftermath of a bang.” -Alan Guth So you finally understand it. Image credit: original source unknown. The farther back we go, the closer together everything was, the higher in temperature (and shorter in wavelength) all the radiation was, and — of course — the younger the Universe was. Image credit: Ned Wright (possibly Will Kinney, too), via At some point, it was hot enough that neutral atoms couldn’t even form; as soon as an electron would find an atomic nucleus, a high-enough-energy photon would come along and ionize the atom’s constituents. Image credit: Lawrence Berkeley National Laboratory. But not indefinitely; we can only go back a finite amount of time in the past, and that’s because what we consider “our Universe” didn’t begin from a singularity 13.8 billion years ago, but began when the previous stage — cosmic inflation — came to an end.
Manchester Graphene (The University of Manchester) Graphene is a fascinating material with many potential applications that stem from its unusual properties. It was thought not to be stable in its free form until it was isolated in 2004 by researchers at The University of Manchester. This is the story of how that discovery came about and why the researchers involved won the Nobel Prize in physics for their work. If we stack layers of graphene on top of one another they form graphite, which is found in every pencil lead. The term has also been used extensively in the work on carbon nanotubes which are effectively rolled up graphene sheets. The work at Manchester begins Andre Geim The fact that the properties of graphene had not yet been measured and that it was thought not to be stable in its free form intrigued Andre Geim so much that in late 2002 he asked a new PhD student to see how thin he make a piece of graphite by polishing it down. Kostya Novoselov A willing volunteer The 2010 Nobel Prize for Physics
learn morse code Berkeley creates the first graphene earphones, and (unsurprisingly) they’re awesome Researchers at the University of California, Berkeley have created the first ever graphene audio speaker: an earphone. In its raw state, without any kind of optimization, the researchers show that graphene’s superior physical and electrical properties allow for an earphone with frequency response comparable to or better than a pair of commercial Sennheiser earphones. A loudspeaker (or earphone or headphone) works by vibrating a (usually) paper diaphragm (aka a cone), creating pressure waves in the air around you. Depending on the frequency of these waves, different sounds are created. Human ears, depending on their age, can usually hear frequencies between 20Hz (very low pitch) and 20KHz (very high). In Berkeley’s graphene earphone, the diaphragm is made from a 30nm-thick, 7mm-wide sheet of graphene. Graphene earphone frequency response (top), vs. Now read: Hype-kill: Graphene is awesome, but a very long way from replacing silicon
As bright as a hundred million Suns: The clusters of monster stars that lit up the early universe -- ScienceDaily The first stars in the Universe were born several hundred million years after the Big Bang, ending a period known as the cosmological 'dark ages' -- when atoms of hydrogen and helium had formed, but nothing shone in visible light. Now two Canadian researchers have calculated what these objects were like: they find that the first stars could have clustered together in phenomenally bright groups, with periods when they were as luminous as 100 million Suns. Alexander DeSouza and Shantanu Basu, both of the University of Western Ontario in Canada, publish their results in a paper in Monthly Notices of the Royal Astronomical Society. The two scientists modelled how the luminosity of the stars would have changed as they formed from the gravitational collapse of disks of gas. In a small cluster of even 10 to 20 protostars, the ongoing bursts would mean the cluster would spend large periods with enhanced brightness.
Manchester Graphene (Nobel Prize Physics 2010) The Nobel Prize in Physics 2010 was awarded jointly to Prof. Andre Geim and Prof. Konstantin Novoselov "for groundbreaking experiments regarding the two-dimensional material graphene" Nobel Prize award ceremony video Nobel Prize Celebration at Manchester University 2011 Additional Information Andre Geim: 2010 Commander of the Order of the Netherlands Lion 2010 Royal Society Anniversary Research professorship 2010 Hughes Medal from the Royal Society 2010 John J. Kostya Novoselov: 2011 Fellowship of the Royal Society 2010 Knight Commander of the Order of the Netherlands Lion 2008 Europhysics Prize 2008 ERC Starting Independent Researcher Grant 2006 The Royal Society Research Fellowship 2004 The Leverhulme Trust, Early Career Fellowship