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Archive for the ‘particle physics’ category: Page 510

Dec 21, 2016

The perfect Christmas gift? A nanoscale snowman

Posted by in categories: evolution, food, nanotechnology, particle physics

Happy Holidays; happy end of the year, happy launch of next year, happy snow days, happy hot chocolate day, etc. Nonetheless, my gift to you this year is a Nanoscale Snowman.


Would a jewel-encrusted snowman make the perfect Christmas present? At only 5 nanometres in size, the price might be lower than you think. And it’s functional too, catalysing the splitting of water to make green hydrogen for fuel cells.

The nanoparticle, as imaged with the aberration-corrected scanning transmission electron microscopes, features eyes, nose and mouth of precious-metal platinum clusters embedded in a titanium dioxide face. Each platinum cluster typically contains 30 platinum atoms; within the whole nanoparticle there are approximately 1680 and 180 platinum atoms.

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Dec 21, 2016

Electrical signaling in heart and nerve cells using graphene

Posted by in categories: biotech/medical, particle physics, robotics/AI

Nice.


Scientists have enlisted the exotic properties of graphene, a one-atom-thick layer of carbon, to function like the film of an incredibly sensitive camera system in visually mapping tiny electric fields in a liquid. Researchers hope the new method will allow more extensive and precise imaging of the electrical signaling networks in our hearts and brains.

The ability to visually depict the strength and motion of very faint electrical fields could also aid in the development of so-called lab-on-a-chip devices that use very small quantities of fluids on a microchip-like platform to diagnose disease or aid in drug development, for example, or that automate a range of other biological and chemical analyses. The setup could potentially be adapted for sensing or trapping specific chemicals, too, and for studies of light-based electronics (a field known as optoelectronics).

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Dec 21, 2016

Q&A: Diamond in Quantum Applications

Posted by in categories: computing, engineering, particle physics, quantum physics

Oh; there is a LOT more to they syndiamond story as it relates to some of the additional hardware and communications technologies that we’re developing and planning for the future.


What are the unique properties of diamond that make it a supermaterial?

Diamond has long been known to have exceptional properties, largely resulting from the symmetry of the cubic lattice made of light carbon atoms connected by extremely strong bonds. These exceptional properties include thermal conductivity five times higher than that of copper and the widest optical transparency of any material extending from the UV to the RF part of the electromagnetic spectrum. Additionally, diamond also has some interesting chemical properties as it is extremely inert, though it can become a conductor by adding boron. In this manner, one could leverage synthetic diamond for use in electrochemical incineration where existing electrode materials have only a limited lifetime.

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Dec 21, 2016

JILA atomic clock mimics long-sought synthetic magnetic state

Posted by in categories: computing, particle physics, quantum physics

Nice.


Using their advanced atomic clock to mimic other desirable quantum systems, JILA physicists have caused atoms in a gas to behave as if they possess unusual magnetic properties long sought in harder-to-study solid materials. Representing a novel “off-label” use for atomic clocks, the research could lead to the creation of new materials for applications such as “spintronic” devices and quantum computers.

JILA’s record-setting atomic clock, in which strontium atoms are trapped in a laser grid known as an , turns out to be an excellent model for the magnetic behavior of crystalline solids at the atomic scale. Such models are valuable for studying the counterintuitive rules of quantum mechanics.

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Dec 21, 2016

Fiber Optics For Quantum Technology Research

Posted by in categories: particle physics, quantum physics, space

Back in September 2015, Gooch & Housego reported on our work with cold atom technology on the FreezeRay project. Now, just over a year later, we’re happy to say that Gooch & Housego has successfully won funding for involvement in two further programs, CASPA and REVEAL, in a competition for the commercialization of quantum technologies. The contest is supported by Innovate UK and the UK National Quantum Technologies Programme.

CASPA (Cold Atom Space Payload) has the aim of developing a payload compatible with CubeSat and capable of producing cold atoms in space. As with all such projects, we are breaking new ground here and an effective demonstration of the prototype system – in this instance space will be the crucial first step towards commercializing instrumentation systems capable of recording minuscule changes in the earth’s gravitational strength. Such changes when mapped across the earth’s surface have the potential to be used in resource exploration or to geo-monitoring of polar ice mass, ocean currents and sea level changes.

CASPA will also evaluate the viability of using the technology in the provision of higher precision timing sources for next generation global positioning system (GPS) and also for deep space navigation. The program partners are e2v technologies Ltd, ClydeSpace, XCAM, Covesion, the University of Birmingham and the University of Southampton.

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Dec 19, 2016

Scientists Blast Antimatter Atoms With A Laser For The First Time

Posted by in category: particle physics

In a technological tour de force, scientists have developed a new way to probe antimatter.

For the first time, researchers were able to zap antimatter atoms with a laser, then precisely measure the light let off by these strange anti-atoms. By comparing the light from anti-atoms with the light from regular atoms, they hope to answer one of the big mysteries of our universe: Why, in the early universe, did antimatter lose out to regular old matter?

“This represents a historic point in the decades-long efforts to create antimatter and compare its properties to those of matter,” says Alan Kostelecky, a theoretical physicist at Indiana University.

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Dec 19, 2016

A New Theory of Gravity Just Passed its First Test. Here’s What This Means for Physics

Posted by in categories: cosmology, particle physics

Verlinde’s emergent gravity theory makes one very important implication: dark matter does not exist. His research makes sense of the behavior of gravity without the need for the existence of a dark matter particle.

Researchers from the Leiden Observatory have studied more than 33,000 galaxies to see if Verlinde’s theory checks out—and the results show that it is, in fact, more accurate at confirming the universe’s gravity distribution than Einstein’s theory of relativity.

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Dec 15, 2016

New structure shows how cells assemble protein-making machinery

Posted by in categories: chemistry, nanotechnology, particle physics, robotics/AI

Scientists at The Rockefeller University have created the most detailed three-dimensional images to date of an important step in the process by which cells make the nano-machines responsible for producing all-important protein. The results, described December 15 in Science, are prompting the researchers to re-evaluate how they envision this early phase in the construction of ribosomes.

“The structure they determined, shown above, belongs to a particle formally called the “small subunit processome.” Before this particle can fulfill its destiny to become the smaller half of a complete ribosome, the RNA within it needs to be folded, tweaked, and cut.

“Initially, we thought of the small subunit processome as a product on an assembly line, with molecular workers arriving from outside, much like the robots that would put together a car. But that analogy no longer appears apt,” says senior author Sebastian Klinge, head of the Laboratory of Protein and Nucleic Acid Chemistry.

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Dec 15, 2016

Researchers discovered elusive half-quantum vortices in a superfluid

Posted by in categories: particle physics, quantum physics, robotics/AI

This is a nice boost for QC and mimics something that should prove interesting for AI and SynBio technology.


Researchers in Aalto University, Finland, and P.L. Kapitza Institute in Moscow have discovered half-quantum vortices in superfluid helium. This vortex is a topological defect, exhibited in superfluids and superconductors, which carries a fixed amount of circulating current.

‘This discovery of half-quantum vortices culminates a long search for these objects originally predicted to exist in superfluid helium in 1976,’ says Samuli Autti, Doctoral Candidate at Aalto University in Finland.

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Dec 13, 2016

Two electrons go on a quantum walk and end up in a qudit: Russian scientists find a way to reliably connect quantum elements

Posted by in categories: biotech/medical, computing, nanotechnology, particle physics, quantum physics, solar power, sustainability

This is a BIG DEAL in QC, and Russian Scientists solved it.


Abstract: Scientists from the Institute of Physics and Technology of the Russian Academy of Sciences and MIPT have let two electrons loose in a system of quantum dots to create a quantum computer memory cell of a higher dimension than a qubit (a quantum bit). In their study published in Scientific Reports, the researchers demonstrate for the first time how quantum walks of several electrons can help to implement quantum computation.

“By studying the system with two electrons, we solved the problems faced in the general case of two identical interacting particles. This paves the way toward compact high-level quantum structures,” comments Leonid Fedichkin, Expert at the Russian Academy of Sciences, Vice-Director for Science at NIX (a Russian computer company), and Associate Professor at MIPT’s Department of Theoretical Physics.

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