Thursday 29 August 2013

Plastic products could easily become electronic with first moldable all-carbon circuits

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(Phys.org) —There has been a great deal of research lately on flexible electronics, but so far these devices (which are mostly made of carbon) still use metal electrodes and oxide insulators, and these rigid materials limit device flexibility. Some polymers and ionic liquids have been introduced as flexible alternatives, but have poor performance in terms of high operating voltages and low operating speeds, respectively.



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Astronomers use Hubble images for movies featuring space slinky

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(Phys.org) —Astronomers have assembled, from more than 13 years of observations from NASA's Hubble Space Telescope, a series of time-lapse movies showing a jet of superheated gas—5,000 light-years long—as it is ejected from a supermassive black hole.



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Physicist proves impossibility of quantum time crystals

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(Phys.org) —Is it possible that a moving object could have zero energy? The common sense answer is no, since motion itself is kinetic energy, but this answer has been challenged recently by the concept of quantum time crystals. First proposed in 2012 by the Nobel Laureate Frank Wilczek at MIT, quantum time crystals are theoretical systems that exhibit periodic oscillations in their ground state, i.e., their state of lowest possible energy.



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Two become one with the 3-D NanoChemiscope

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The 3D NanoChemiscope is a miracle of state-of-the-art analysis technology. As a further development of well-known microscopic and mass spectroscopic methods, it maps the physical and chemical surfaces of materials down to the atomic level. This instrument, which is unique in the world, not only delivers high-definition images; it also knows what it is "seeing".



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A brighter method to determine surface gravity of distant stars

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Astronomers have found a clever new way to slice and dice the flickering light from a distant star in a way that reveals the strength of gravity at its surface.



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Teleportation just got easier—but not for you, unfortunately

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Thanks to two studies published in Nature last Thursday, the chance of successful teleportation has considerably increased. Which is a good thing, right?



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Quantum effects in nanowires at room temperature

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Nano technologists at the University of Twente research institute MESA+ have, for the first time, demonstrated quantum effects in tiny nanowires of iridium atoms. These effects, which occur at room temperature, are responsible for ensuring that the wires are almost always 4.8 nanometers—or multiples thereof—long. They only found the effects when they failed to create long nanowires of iridium. Nature Communications is publishing the research today.



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Researchers discover quantum algorithm that could improve stealth fighter design

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(Phys.org) —Researchers at the Johns Hopkins University Applied Physics Laboratory (APL) have devised a quantum algorithm for solving big linear systems of equations. Furthermore, they say the algorithm could be used to calculate complex measurements such as radar cross sections, an ability integral to the development of radar stealth technology, among many other applications. Their research is reported in the June 18 issue of Physical Review Letters.



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'Groovy' hologram creates strange state of light at visible and invisible wavelengths

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(Phys.org) —Applied physicists at the Harvard School of Engineering and Applied Sciences (SEAS) have demonstrated that they can change the intensity, phase, and polarization of light rays using a hologram-like design decorated with nanoscale structures.



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ALMA takes close look at drama of starbirth

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(Phys.org) —Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have obtained a vivid close-up view of material streaming away from a newborn star. By looking at the glow coming from carbon monoxide molecules in an object called Herbig-Haro 46/47 they have discovered that its jets are even more energetic than previously thought. The very detailed new images have also revealed a previously unknown jet pointing in a totally different direction.



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Quantum teleportation: Transfer of flying quantum bits at the touch of a button

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By means of the quantum-mechanical entanglement of spatially separated light fields, researchers in Tokyo and Mainz have managed to teleport photonic qubits with extreme reliability. This means that a decisive breakthrough has been achieved some 15 years after the first experiments in the field of optical teleportation. The success of the experiment conducted in Tokyo is attributable to the use of a hybrid technique in which two conceptually different and previously incompatible approaches were combined.



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Teleported by electronic circuit: Physicists 'beam' information

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ETH-researchers cannot "beam" objects or humans of flesh and blood through space yet, a feat sometimes alluded to in science fiction movies. They managed, however, to teleport information from A to B – for the first time in an electronic circuit, similar to a computer chip.



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Quantum communication controlled by resonance in 'artificial atoms'

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Researchers at the Niels Bohr Institute, together with colleagues in the US and Australia, have developed a method to control a quantum bit for electronic quantum communication in a series of quantum dots, which behave like artificial atoms in the solid state. The results have been published in the scientific journal Physical Review Letters.



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An infallible quantum measurement

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Entanglement is a key resource for upcoming quantum computers and simulators. Now, physicists in Innsbruck and Geneva realized a new, reliable method to verify entanglement in the laboratory using a minimal number of assumptions about the system and measuring devices. Hence, this method witnesses the presence of useful entanglement.



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Towards a global quantum network: Photoelectron trapping in double quantum dots

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(Phys.org) —While the journey from today's fledgling quantum computers to a global quantum information network may seem daunting, researchers are continually, and at an accelerating pace, making progress towards that goal. One key element essential to that progress is the transfer of quantum information between single photons and solid-state quanta – and the properties of semiconductor quantum dots (QDs) make them excellent candidates for photon-electron quantum coupling. One historical stumbling block has been that although quantum circuits require nondestructive transfer between separate dots, using single QDs usually fails due to destructive transfer in which photoelectrons are immediately lost upon measurement.



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Scientists realize quantum bit with a bent nanotube

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One of the biggest challenges in quantum science is to build a functioning quantum bit, the basic element for the quantum computer. An important theoretical candidate for such a quantum bit is using a bent carbon nanotube. Scientists at the Delft University of Technology and the Foundation for Fundamental Research on Matter (FOM), led by Professor Leo Kouwenhoven, have succeeded for the first time to create a working quantum bit using a carbon nanotube. On July 28 they published their results in Nature Nanotechnology.



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When fluid dynamics mimic quantum mechanics

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In the early days of quantum physics, in an attempt to explain the wavelike behavior of quantum particles, the French physicist Louis de Broglie proposed what he called a "pilot wave" theory. According to de Broglie, moving particles—such as electrons, or the photons in a beam of light—are borne along on waves of some type, like driftwood on a tide.



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What if quantum physics worked on a macroscopic level?

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Quantum physics concerns a world of infinitely small things. But for years, researchers from the University of Geneva (UNIGE), Switzerland, have been attempting to observe the properties of quantum physics on a larger scale, even macroscopic. In January 2011, they managed to entangle crystals, therefore surpassing the atomic dimension. Now, Professor Nicolas Gisin's team has successfully entangled two optic fibers, populated by 500 photons. Unlike previous experiments which were carried out with the fiber optics of one photon, this new feat (which has been published in Nature Physics) begins to answer a fundamental question: can quantum properties survive on a macroscopic level?



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"Valleytronics" – a new type of electronics in diamond

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(Phys.org) —An alternative and novel concept in electronics is to utilize the wave quantum number of the electron in a crystalline material to encode information. In a new article in Nature Materials, Isberg et.al. propose using this valley degree of freedom in diamond to enable valleytronic information processing or as a new route to quantum computing.



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Making big 'Schroedinger cats': Quantum research pushes boundary by testing micro theory for macro objects

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Since Erwin Schroedinger's famous 1935 cat thought experiment, physicists around the globe have tried to create large scale systems to test how the rules of quantum mechanics apply to everyday objects.



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Searching for quantum physics in all the right places

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An improved method for measuring quantum properties offers new insight into the unique characteristics of quantum systems.



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Oxford Questions seek to pull back the curtain on the foundations of quantum physics

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(Phys.org) —Relativity and quantum theory form the backbone of modern physics, but a group of physicists stresses that daily use of these theories can numb the sense of wonder at their immense empirical success. At the same time, fundamental questions on the foundations of these two theories remain. In 2010, experimentalists, theorists, and philosophers of physics convened at a conference at the University of Oxford called Quantum Physics and the Nature of Reality. They produced a set of "Oxford Questions" aimed at identifying some specific open problems about the nature of quantum reality in order to stimulate and guide future research.



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Physicists publish solution to the quantum measurement problem

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(Phys.org) —Quantum mechanics is a highly successful theory, but its interpretation has still not been settled. In their recent opus magnum, Theo Nieuwenhuizen (Institute of Physics, UvA) and colleagues claim to have found a solution to the so-called quantum measurement problem.



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Link between quantum physics and game theory found

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(Phys.org) —A deep link between two seemingly unconnected areas of modern science has been discovered by researchers from the Universities of Bristol and Geneva.



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Physicists build quantum refrigerator based on four quantum dots

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(Phys.org) —With the goal of understanding the relation between thermodynamics and quantum mechanics, physicists have recently been investigating the fundamental limits of the smallest possible quantum refrigerator. As a refrigerator, the device must be able to transfer heat from one reservoir to another. In a new study, physicists have proposed a quantum refrigerator consisting of just four quantum dots, each in contact with a thermal reservoir. They theoretically show that this system can extract heat from the coldest reservoir and cool the nearby quantum dot, making it one of the smallest quantum refrigerators proposed to date.



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Detection of single photons via quantum entanglement

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Almost 200 years ago, Bavarian physicist Joseph von Fraunhofer discovered dark lines in the sun's spectrum. It was later discovered that these spectral lines can be used to infer the chemical composition and temperature of the sun's atmosphere. Today we are able to gain information about diverse objects through light measurements in a similar way. Because often very little light needs to be detected for this, physicists are looking for ever more sensitive spectroscopy methods. In extreme cases, also single particles of light (photons) need to be measured reliably, which is technically challenging.



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Two papers investigate the thermodynamics of quantum systems

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(Phys.org) —As one of the pillars of the natural sciences, thermodynamics plays an important role in all processes that involve heat, energy, and work. While the principles of thermodynamics can predict the amount of work done in classical systems, for quantum systems there is instead a distribution of many possible values of work. Two new papers published in Physical Review Letters have proposed theoretical schemes that would significantly ease the measurement of the statistics of work done by quantum systems.



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MIT researchers build an all-optical transistor

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Optical computing—using light rather than electricity to perform calculations—could pay dividends for both conventional computers and quantum computers, largely hypothetical devices that could perform some types of computations exponentially faster than classical computers.



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Exhibit highlights advances in quantum communication and computing

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Researchers from the Cambridge Research Laboratory of Toshiba Research Europe Limited and the Cavendish Laboratory of the University of Cambridge will today present the world's most secure chat and video conferencing network at the Royal Society Summer Science Exhibition in London. It uses quantum physics to automatically detect tapping of the network and alert users of any potential threat.



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Large-scale quantum chip validated

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A team of scientists at USC has verified that quantum effects are indeed at play in the first commercial quantum optimization processor.



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New grayscale technique opens a third dimension for nanoscale lithography

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Engineers at the NIST Center for Nanoscale Science and Technology (CNST) have developed a new technique for fabricating high aspect ratio three-dimensional (3D) nanostructures over large device areas using a combination of electron beam (e-beam) lithography, photolithography, and resist spray coating. While it has long been possible to make complicated 3D structures with many mask layers or expensive grayscale masks, the new technique enables researchers to etch trenches and other high aspect ratio structures with nanometer scale features without using masks and in only two process stages.



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Light on twenty-year-old electron mystery

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Groningen scientists have found an explanation for a mystery that has been puzzling the physics community since 1995. In the scientific journal Nature on Thursday 28 August (Advance Online Publication), they explain why electrons pass through very tiny wires (known as quantum point contacts) less smoothly than expected. The observations of the group led by Prof. C.H. van der Wal of the Zernike Institute for Advanced Materials of the University of Groningen will affect electronics on a nanoscale: "Our thinking about this has been too naïve so far."



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New component in the quantum electronics toolbox

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The coherence of quantum systems is the foundation upon which hardware for future information technologies is based. Quantum information is carried by units called quantum bits, or qubits. They can be used to secure electronic communications – and they enable very fast searches of databases. But qubits are also very unstable. Professors József Fortágh, Dieter Kölle and Reinhold Kleiner of Tübingen's Institute of Physics have developed a new electronic component which will help to deal with this problem. The researchers' long-term goal is to process, transfer and store superposition states such as the overlapping of the binary digits zero and one. The initial results of their work are to be published in the journal Nature Communications on 29 August 2013.



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Galactic Jewel Box iPad Mini Covers

Here's a great product from Zazzle featuring an astronomy case. Maybe you'd like to see your name on it? Click to personalize and see what it's like!

after scouring the Zazzle market place for a while, I settled on this as my choice for today. By reflections06,
another talented artist from the Zazzle community!


Great little custom case for your device!

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The Zazzle Promise: We promise 100% satisfaction. If you don't absolutely love it, we'll take it back!

Neutron stars in the computer cloud

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The combined computing power of 200,000 private PCs helps astronomers take an inventory of the Milky Way. The Einstein@Home project connects home and office PCs of volunteers from around the world to a global supercomputer. Using this computer cloud, an international team lead by scientists from the Max Planck Institutes for Gravitational Physics and for Radio Astronomy analysed archival data from the CSIRO Parkes radio telescope in Australia. Using new search methods, the global computer network discovered 24 pulsars – extraordinary stellar remnants with extreme physical properties. These can be used as testbeds for Einstein's general theory of relativity and could help to complete our picture of the pulsar population.



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New sensor for SERS Raman spectroscopy almost as sensitive as a dog's nose

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Using carbon nanotubes, a research team led by Professor Hyung Gyu Park in collaboration with Dr. Tiziana Bond has developed a sensor that greatly amplifies the sensitivity of commonly used but typically weak vibrational spectroscopic methods, such as Raman spectroscopy. This type of sensor makes it possible to detect molecules present in the tiniest of concentrations.



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Quantum measurement carries information even when the measurement outcome is unread

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(Phys.org) —Some tasks that are impossible in classical systems can be realized in quantum systems. This fact is exemplified by a new protocol that highlights an important difference between classical and quantum measurements. In classical mechanics, performing a measurement without reading the measurement outcome does not carry any information and is therefore equivalent to not performing the measurement at all. But in the new protocol, a quantum measurement that is performed but not read can carry information because the information can be encoded in the choice of the type of measurement that was performed.



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Quantum computing: Manipulating a single nuclear spin qubit of a laser cooled atom

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It is advantageous to implement a quantum bit (qubit) with a single nuclear spin because the nuclear spin is robust against any stray magnetic fields. This robustness can be attributed to the small magnitude of the magnetic moment of the nuclear spin compared with that of the electronic spin.



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Physicist disentangles 'Schrodinger's cat' debate

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Physicist Art Hobson has offered a solution, within the framework of standard quantum physics, to the long-running debate about the nature of quantum measurement.



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Silence in the sky—but why?

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(Phys.org) —Scientists as eminent as Stephen Hawking and Carl Sagan have long believed that humans will one day colonise the universe. But how easy would it be, why would we want to, and why haven't we seen any evidence of other life forms making their own bids for universal domination?



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Embracing Orion

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(Phys.org) —This new view of the Orion A star-formation cloud from ESA's Herschel space observatory shows the turbulent region of space that hugs the famous Orion Nebula.



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New nanomaterial increases yield of solar cells

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Researchers from the FOM Foundation, Delft University of Technology, Toyota Motor Europe and the University of California have developed a nanostructure with which they can make solar cells highly efficient. The researchers published their findings on 23 August 2013 in the online edition of Nature Communications.



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NASA's SDO mission untangles motion inside the sun

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Using an instrument on NASA's Solar Dynamics Observatory, called the Helioseismic and Magnetic Imager, or HMI, scientists have overturned previous notions of how the sun's writhing insides move from equator to pole and back again, a key part of understanding how the dynamo works. Modeling this system also lies at the heart of improving predictions of the intensity of the next solar cycle.

via Science Daily

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Space laser to prove increased broadband possible

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Scientists are attemping to show two-way laser communication beyond Earth is possible, expanding the possibility of transmitting huge amounts of data. This new ability could one day allow for 3-D high definition video transmissions in deep space to become routine.

via Science Daily

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Phoenix on Space Cigar Nebula backdrop Galaxy S3 Cover


Galaxies, Stars and Nebulae series With a stylized Crimson Rising Phoenix, wings outstretched in rebirth, this is a composite of images of the active galaxy Messier 82 from the three Great Observatories: Hubble Space Telescope, Chandra X-Ray Observatory, and Spitzer Space Telescope. X-ray data recorded by Chandra appears here in blue, infrared light recorded by Spitzer appears in red. Hubble's observation of hydrogen emission appears in orange. Hubble's bluest observation appears in yellow-green.

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image codes: agmet phnx

Image credit: Hubble Space Telescope, Chandra X-Ray Observatory, Spitzer Space Telescope
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Flaming Nebula Case For The iPad Mini

Here's a great product from Zazzle featuring an astronomy case. Maybe you'd like to see your name on it? Click to personalize and see what it's like!

so many products with fantastic designs on Zazzle... which to choose today? How about this one from reflections06,
another talented artist from the Zazzle community!


Great little custom case for your device!

»visit the reflections06 store for more designs and products like this
The Zazzle Promise: We promise 100% satisfaction. If you don't absolutely love it, we'll take it back!